all messages for Guix-related lists mirrored at yhetil.org
 help / color / mirror / code / Atom feed
blob 26d8f59a2c5513e10a17e32b6b0b7edbd082972a 78972 bytes (raw)
name: guix/lint.scm 	 # note: path name is non-authoritative(*)

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
 
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014 Cyril Roelandt <tipecaml@gmail.com>
;;; Copyright © 2014, 2015 Eric Bavier <bavier@member.fsf.org>
;;; Copyright © 2013-2022 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2015, 2016 Mathieu Lirzin <mthl@gnu.org>
;;; Copyright © 2016 Danny Milosavljevic <dannym+a@scratchpost.org>
;;; Copyright © 2016 Hartmut Goebel <h.goebel@crazy-compilers.com>
;;; Copyright © 2017 Alex Kost <alezost@gmail.com>
;;; Copyright © 2017, 2021 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2017, 2018, 2020 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2018, 2019 Arun Isaac <arunisaac@systemreboot.net>
;;; Copyright © 2020 Chris Marusich <cmmarusich@gmail.com>
;;; Copyright © 2020 Timothy Sample <samplet@ngyro.com>
;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
;;; Copyright © 2021, 2022 Maxime Devos <maximedevos@telenet.be>
;;; Copyright © 2021 Brice Waegeneire <brice@waegenei.re>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (guix lint)
  #:use-module (guix store)
  #:autoload   (guix base16) (bytevector->base16-string)
  #:use-module (guix base32)
  #:autoload   (guix base64) (base64-encode)
  #:use-module (guix build-system)
  #:use-module (guix diagnostics)
  #:use-module (guix download)
  #:use-module (guix ftp-client)
  #:use-module (guix http-client)
  #:use-module (guix packages)
  #:use-module (guix i18n)
  #:use-module ((guix gexp)
                #:select (gexp? local-file? local-file-absolute-file-name
                                gexp->approximate-sexp))
  #:use-module (guix licenses)
  #:use-module (guix records)
  #:use-module (guix upstream)
  #:use-module (guix utils)
  #:use-module (guix memoization)
  #:use-module (guix profiles)
  #:use-module (guix monads)
  #:use-module (guix scripts)
  #:use-module ((guix ui) #:select (texi->plain-text fill-paragraph))
  #:use-module (guix gnu-maintenance)
  #:use-module (guix cve)
  #:use-module ((guix swh) #:hide (origin?))
  #:autoload   (guix git-download) (git-reference?
                                    git-reference-url git-reference-commit)
  #:autoload   (guix svn-download) (svn-reference?
                                    svn-reference-url
                                    svn-reference-user-name
                                    svn-reference-password

                                    svn-multi-reference?
                                    svn-multi-reference-url
                                    svn-multi-reference-user-name
                                    svn-multi-reference-password)
  #:use-module (guix import stackage)
  #:use-module (ice-9 match)
  #:use-module (ice-9 regex)
  #:use-module (ice-9 format)
  #:autoload   (rnrs bytevectors) (string->utf8)
  #:use-module (web client)
  #:use-module (web uri)
  #:use-module ((guix build download)
                #:select (maybe-expand-mirrors
                          (open-connection-for-uri
                           . guix:open-connection-for-uri)))
  #:use-module (web request)
  #:use-module (web response)
  #:autoload   (gnutls) (error->string)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-6)                      ;Unicode string ports
  #:use-module (srfi srfi-9)
  #:use-module (srfi srfi-11)
  #:use-module (srfi srfi-26)
  #:use-module (srfi srfi-34)
  #:use-module (srfi srfi-35)
  #:use-module (ice-9 rdelim)
  #:export (check-description-style
            check-inputs-should-be-native
            check-inputs-should-not-be-an-input-at-all
            check-input-labels
            check-wrapper-inputs
            check-patch-file-names
            check-patch-headers
            check-synopsis-style
            check-derivation
            check-home-page
            check-name
            check-source
            check-source-file-name
            check-source-unstable-tarball
            check-optional-tests
            check-mirror-url
            check-github-url
            check-license
            check-vulnerabilities
            check-for-updates
            check-formatting
            check-archival
            check-profile-collisions
            check-haskell-stackage
            check-tests-true

            lint-warning
            lint-warning?
            lint-warning-package
            lint-warning-message
            lint-warning-message-text
            lint-warning-message-data
            lint-warning-location

            %local-checkers
            %network-dependent-checkers
            %all-checkers

            lint-checker
            lint-checker?
            lint-checker-name
            lint-checker-description
            lint-checker-check
            lint-checker-requires-store?))

\f
;;;
;;; Warnings
;;;

(define-record-type* <lint-warning>
  lint-warning make-lint-warning
  lint-warning?
  (package       lint-warning-package)
  (message-text  lint-warning-message-text)
  (message-data  lint-warning-message-data
                 (default '()))
  (location      lint-warning-location
                 (default #f)))

(define (lint-warning-message warning)
  (apply format #f
         (G_ (lint-warning-message-text warning))
         (lint-warning-message-data warning)))

(define (package-file package)
  (location-file
   (package-location package)))

(define* (%make-warning package message-text
                        #:optional (message-data '())
                        #:key field location)
  (make-lint-warning
   package
   message-text
   message-data
   (or location
       (and field (package-field-location package field))
       (package-location package))))

(define-syntax make-warning
  (syntax-rules (G_)
    ((_ package (G_ message) rest ...)
     (%make-warning package message rest ...))))

\f
;;;
;;; Procedures for analysing Scheme code in package definitions
;;;

(define* (find-procedure-body expression found
                              #:key (not-found (const '())))
  "Try to find the body of the procedure defined inline by EXPRESSION.
If it was found, call FOUND with its body. If it wasn't, call
the thunk NOT-FOUND."
  (match expression
    (`(,(or 'let 'let*) . ,_)
     (find-procedure-body (car (last-pair expression)) found
                          #:not-found not-found))
    (`(,(or 'lambda 'lambda*) ,_ . ,code)
     (found code))
    (_ (not-found))))

(define* (report-bogus-phase-deltas package bogus-deltas)
  "Report a bogus invocation of ‘modify-phases’."
  (list (make-warning package
                      ;; TRANSLATORS: 'modify-phases' is a Scheme syntax
                      ;; and should not be translated.
                      (G_ "incorrect call to ‘modify-phases’")
                      #:field 'arguments)))

(define* (find-phase-deltas package found
                            #:key (not-found (const '()))
                            (bogus
                             (cut report-bogus-phase-deltas package <>)))
  "Try to find the clauses of the ‘modify-phases’ form in the phases
specification of PACKAGE.  If they were found, all FOUND with a list
of the clauses.  If they weren't (e.g. because ‘modify-phases’ wasn't
used at all), call the thunk NOT-FOUND instead.  If ‘modify-phases’
was used, but the clauses don't form a list, call BOGUS with the
not-a-list."
  (apply (lambda* (#:key phases #:allow-other-keys)
           (define phases/sexp
             (if (gexp? phases)
                 (gexp->approximate-sexp phases)
                 phases))
           (match phases/sexp
             (`(modify-phases ,_ . ,changes)
              ((if (list? changes) found bogus) changes))
             (_ (not-found))))
         (package-arguments package)))

(define (report-bogus-phase-procedure package)
  "Report a syntactically-invalid phase clause."
  (list (make-warning package
                      ;; TRANSLATORS: See ‘modify-phases’ in the manual.
                      (G_ "invalid phase clause")
                      #:field 'arguments)))

(define* (find-phase-procedure package expression found
                               #:key (not-found (const '()))
                               (bogus (cut report-bogus-phase-procedure
                                           package)))
  "Try to find the procedure in the phase clause EXPRESSION. If it was
found, call FOUND with the procedure expression. If EXPRESSION isn't
actually a phase clause, call the thunk BOGUS. If the phase form doesn't
have a procedure, call the thunk NOT-FOUND."
  (match expression
    (('add-after before after proc-expr)
     (found proc-expr))
    (('add-before after before proc-expr)
     (found proc-expr))
    (('replace _ proc-expr)
     (found proc-expr))
    (('delete _) (not-found))
    (_ (bogus))))

\f
;;;
;;; Checkers
;;;

(define-record-type* <lint-checker>
  lint-checker make-lint-checker
  lint-checker?
  ;; TODO: add a 'certainty' field that shows how confident we are in the
  ;; checker. Then allow users to only run checkers that have a certain
  ;; 'certainty' level.
  (name        lint-checker-name)
  (description lint-checker-description)
  (check       lint-checker-check)
  (requires-store? lint-checker-requires-store?
                   (default #f)))

(define (check-name package)
  "Check whether PACKAGE's name matches our guidelines."
  (let ((name (package-name package)))
    (cond
     ;; Currently checks only whether the name is too short.
     ((and (<= (string-length name) 1)
           (not (string=? name "r"))) ; common-sense exception
      (list
       (make-warning package
                     (G_ "name should be longer than a single character")
                     #:field 'name)))
     ((string-index name #\_)
      (list
       (make-warning package
                     (G_ "name should use hyphens instead of underscores")
                     #:field 'name)))
     (else '()))))

(define (check-tests-true package)
  "Check whether PACKAGE explicitly requests to run tests, which is
superfluous when building natively and incorrect when cross-compiling."
  (define (tests-explicitly-enabled?)
    (apply (lambda* (#:key tests? #:allow-other-keys)
             (eq? tests? #t))
           (package-arguments package)))
  (if (and (tests-explicitly-enabled?)
           ;; emacs-build-system sets #:tests? #f by default, therefore
           ;; writing #:tests? #t in package definitions using
           ;; emacs-build-system is reasonable.  Likewise for
           ;; texlive-build-system.
           ;;
           ;; Compare the name of the build system instead of the build system
           ;; itself to avoid loading unnecessary modules when only a few
           ;; modules are linted.
           (not (memq (build-system-name (package-build-system package))
                      '(emacs texlive)))
           ;; Some packages, e.g. gnutls, set #:tests?
           ;; differently depending on whether it is being
           ;; cross-compiled.
           (parameterize ((%current-target-system "aarch64-linux-gnu"))
             (tests-explicitly-enabled?)))
      (list (make-warning package
                          ;; TRANSLATORS: #:tests? and #t are Scheme constants
                          ;; and must not be translated.
                          (G_ "#:tests? must not be explicitly set to #t")
                          #:field 'arguments))
      '()))

(define (properly-starts-sentence? s)
  (string-match "^[@(\"'`[:upper:][:digit:]]" s))

(define (starts-with-abbreviation? s)
  "Return #t if S starts with what looks like an abbreviation or acronym."
  (string-match "^[A-Z][A-Z0-9]+\\>" s))

(define %quoted-identifier-rx
  ;; A quoted identifier, like 'this'.
  (make-regexp "['`][[:graph:]]+'"))

(define (check-description-style package)
  ;; Emit a warning if stylistic issues are found in the description of PACKAGE.
  (define (check-not-empty description)
    (if (string-null? description)
        (list
         (make-warning package
                       (G_ "description should not be empty")
                       #:field 'description))
        '()))

  (define (check-texinfo-markup description)
    "Check that DESCRIPTION can be parsed as a Texinfo fragment.  If the
markup is valid return a plain-text version of DESCRIPTION, otherwise #f."
    (catch #t
      (lambda () (texi->plain-text description))
      (lambda (keys . args)
        (make-warning package
                      (G_ "Texinfo markup in description is invalid")
                      #:field 'description))))

  (define (check-description-typo description typo-corrections)
    "Check that DESCRIPTION does not contain typo, with optional correction"
    (append-map
     (match-lambda
      ((typo . correction)
       (if (string-contains description typo)
           (list
            (make-warning package
                          (G_
                           (format #false
                                   "description contains typo '~a'~@[, should be '~a'~]"
                                   typo correction))))
           '())))
     typo-corrections))

  (define (check-trademarks description)
    "Check that DESCRIPTION does not contain '™' or '®' characters.  See
http://www.gnu.org/prep/standards/html_node/Trademarks.html."
    (match (string-index description (char-set #\™ #))
      ((and (? number?) index)
       (list
        (make-warning package
                      (G_ "description should not contain ~
trademark sign '~a' at ~d")
                      (list (string-ref description index) index)
                      #:field 'description)))
      (else '())))

  (define (check-quotes description)
    "Check whether DESCRIPTION contains single quotes and suggest @code."
    (if (regexp-exec %quoted-identifier-rx description)
        (list
         (make-warning package
                       ;; TRANSLATORS: '@code' is Texinfo markup and must be kept
                       ;; as is.
                       (G_ "use @code or similar ornament instead of quotes")
                       #:field 'description))
        '()))

  (define (check-proper-start description)
    (if (or (string-null? description)
            (properly-starts-sentence? description)
            (string-prefix-ci? (package-name package) description))
        '()
        (list
         (make-warning
          package
          (G_ "description should start with an upper-case letter or digit")
          #:field 'description))))

  (define (check-end-of-sentence-space description)
    "Check that an end-of-sentence period is followed by two spaces."
    (let ((infractions
           (reverse (fold-matches
                     "\\. [A-Z]" description '()
                     (lambda (m r)
                       ;; Filter out matches of common abbreviations.
                       (if (find (lambda (s)
                                   (string-suffix-ci? s (match:prefix m)))
                                 '("i.e" "e.g" "a.k.a" "resp"))
                           r (cons (match:start m) r)))))))
      (if (null? infractions)
          '()
          (list
           (make-warning package
                         (G_ "sentences in description should be followed ~
by two spaces; possible infraction~p at ~{~a~^, ~}")
                         (list (length infractions)
                               infractions)
                         #:field 'description)))))

  (define (check-no-leading-whitespace description)
    "Check that DESCRIPTION doesn't have trailing whitespace."
    (if (string-prefix? " " description)
        (list
         (make-warning package
                       (G_ "description contains leading whitespace")
                       #:field 'description))
        '()))

  (define (check-no-trailing-whitespace description)
    "Check that DESCRIPTION doesn't have trailing whitespace."
    (if (string-suffix? " " description)
        (list
         (make-warning package
                       (G_ "description contains trailing whitespace")
                       #:field 'description))
        '()))

  (let ((description (package-description package)))
    (if (string? description)
        (append
         (check-not-empty description)
         (check-quotes description)
         (check-trademarks description)
         (check-description-typo description '(("This packages" . "This package")
                                               ("This modules" . "This module")
                                               ("allows to" . #f)
                                               ("permits to" . #f)))
         ;; Use raw description for this because Texinfo rendering
         ;; automatically fixes end of sentence space.
         (check-end-of-sentence-space description)
         (check-no-leading-whitespace description)
         (check-no-trailing-whitespace description)
         (match (check-texinfo-markup description)
           ((and warning (? lint-warning?)) (list warning))
           (plain-description
            (check-proper-start plain-description))))
        (list
         (make-warning package
                       (G_ "invalid description: ~s")
                       (list description)
                       #:field 'description)))))

(define (package-input-intersection inputs-to-check input-names)
  "Return the intersection between INPUTS-TO-CHECK, the list of input tuples
of a package, and INPUT-NAMES, a list of package specifications such as
\"glib:bin\"."
  (match inputs-to-check
    (((labels packages . outputs) ...)
     (filter-map (lambda (package output)
                   (and (package? package)
                        (let ((input (string-append
                                      (package-name package)
                                      (if (> (length output) 0)
                                          (string-append ":" (car output))
                                          ""))))
                          (and (member input input-names)
                               input))))
                 packages outputs))))

(define (check-inputs-should-be-native package)
  ;; Emit a warning if some inputs of PACKAGE are likely to belong to its
  ;; native inputs.
  (let ((inputs (append (package-inputs package)
                        (package-propagated-inputs package)))
        (input-names
         '("pkg-config"
            "autoconf"
            "automake"
            "bison"
            "cmake"
            "dejagnu"
            "desktop-file-utils"
            "doxygen"
            "extra-cmake-modules"
            "flex"
            "gettext"
            "glib:bin"
            "gobject-introspection"
            "googletest-source"
            "groff"
            "gtk-doc"
            "help2man"
            "intltool"
            "itstool"
            "kdoctools"
            "libtool"
            "m4"
            "qttools-5"
            "yasm" "nasm" "fasm"
            "python-coverage"
            "python-cython"
            "python-docutils"
            "python-mock"
            "python-nose"
            "python-pbr"
            "python-pytest"
            "python-pytest-cov"
            "python-setuptools-scm"
            "python-sphinx"
            "scdoc"
            "swig"
            "qmake"
            "qttools-5"
            "texinfo"
            "xorg-server-for-tests"
            "yelp-tools")))
    (map (lambda (input)
           (make-warning
            package
            (G_ "'~a' should probably be a native input")
            (list input)
            #:field 'inputs))
         (package-input-intersection inputs input-names))))

(define (check-inputs-should-not-be-an-input-at-all package)
  ;; Emit a warning if some inputs of PACKAGE are likely to should not be
  ;; an input at all.
  (let ((input-names '("python-setuptools"
                       "python-pip")))
    (map (lambda (input)
           (make-warning
            package
            (G_ "'~a' should probably not be an input at all")
            (list input)
            #:field 'inputs))
         (package-input-intersection (package-direct-inputs package)
                                     input-names))))

(define (check-input-labels package)
  "Emit a warning for labels that differ from the corresponding package name."
  (define (check input-kind package-inputs)
    (define (warning label name)
      (make-warning package
                    (G_ "label '~a' does not match package name '~a'")
                    (list label name)
                    #:field input-kind))

    (append-map (match-lambda
                  (((? string? label) (? package? dependency))
                   (if (string=? label (package-name dependency))
                       '()
                       (list (warning label (package-name dependency)))))
                  (((? string? label) (? package? dependency) output)
                   (let ((expected (string-append (package-name dependency)
                                                  ":" output)))
                     (if (string=? label expected)
                         '()
                         (list (warning label expected)))))
                  (_
                   '()))
                (package-inputs package)))

  (append-map (match-lambda
                ((kind proc)
                 (check kind proc)))
              `((native-inputs ,package-native-inputs)
                (inputs ,package-inputs)
                (propagated-inputs ,package-propagated-inputs))))

(define (report-wrap-program-error package wrapper-name)
  "Warn that \"bash-minimal\" is missing from 'inputs', while WRAPPER-NAME
requires it."
  (make-warning package
                (G_ "\"bash-minimal\" should be in 'inputs' when '~a' is used")
                (list wrapper-name)))

(define (check-wrapper-inputs package)
  "Emit a warning if PACKAGE uses 'wrap-program' or similar, but \"bash\"
or \"bash-minimal\" is not in its inputs. 'wrap-script' is not supported."
  (define input-names '("bash" "bash-minimal"))
  (define has-bash-input?
    (pair? (package-input-intersection (package-inputs package)
                                       input-names)))
  (define (check-procedure-body body)
    (match body
      ;; Explicitely setting an interpreter is acceptable.
      (('wrap-program _ '#:sh . _) '())
      (('wrap-program _ . _)
       (list (report-wrap-program-error package 'wrap-program)))
      ;; Wrapper of 'wrap-program' for Qt programs.
      ;; TODO #:sh is not yet supported but probably will be.
      (('wrap-qt-program _ '#:sh . _) '())
      (('wrap-qt-program _ . _)
       (list (report-wrap-program-error package 'wrap-qt-program)))
      ((x . y)
       (append (check-procedure-body x) (check-procedure-body y)))
      (_ '())))
  (define (check-phase-procedure expression)
    (find-procedure-body expression check-procedure-body))
  (define (check-delta expression)
    (find-phase-procedure package expression check-phase-procedure))
  (define (check-deltas deltas)
    (append-map check-delta deltas))
  (if has-bash-input?
      ;; "bash" (or "bash-minimal") is in 'inputs', so everything seems ok.
      '()
      ;; "bash" is not in 'inputs'.  Verify 'wrap-program' and friends
      ;; are unused
      (find-phase-deltas package check-deltas)))

(define (package-name-regexp package)
  "Return a regexp that matches PACKAGE's name as a word at the beginning of a
line."
  (make-regexp (string-append "^" (regexp-quote (package-name package))
                              "\\>")
               regexp/icase))

(define (check-synopsis-style package)
  ;; Emit a warning if stylistic issues are found in the synopsis of PACKAGE.
  (define (check-final-period synopsis)
    ;; Synopsis should not end with a period, except for some special cases.
    (if (and (string-suffix? "." synopsis)
             (not (string-suffix? "etc." synopsis)))
        (list
         (make-warning package
                       (G_ "no period allowed at the end of the synopsis")
                       #:field 'synopsis))
        '()))

  (define check-start-article
    ;; Skip this check for GNU packages, as suggested by Karl Berry's reply to
    ;; <http://lists.gnu.org/archive/html/bug-womb/2014-11/msg00000.html>.
    (if (false-if-exception (gnu-package? package))
        (const '())
        (lambda (synopsis)
          (if (or (string-prefix-ci? "A " synopsis)
                  (string-prefix-ci? "An " synopsis))
              (list
               (make-warning package
                             (G_ "no article allowed at the beginning of \
the synopsis")
                             #:field 'synopsis))
              '()))))

  (define (check-synopsis-length synopsis)
    (if (>= (string-length (string-replace-substring synopsis "@code{" "")) 80)
        (list
         (make-warning package
                       (G_ "synopsis should be less than 80 characters long")
                       #:field 'synopsis))
        '()))

  (define (check-proper-start synopsis)
    (if (properly-starts-sentence? synopsis)
        '()
        (list
         (make-warning package
                       (G_ "synopsis should start with an upper-case letter or digit")
                       #:field 'synopsis))))

  (define (check-start-with-package-name synopsis)
    (if (and (regexp-exec (package-name-regexp package) synopsis)
               (not (starts-with-abbreviation? synopsis)))
        (list
         (make-warning package
                       (G_ "synopsis should not start with the package name")
                       #:field 'synopsis))
        '()))

  (define (check-texinfo-markup synopsis)
    "Check that SYNOPSIS can be parsed as a Texinfo fragment.  If the
markup is valid return a plain-text version of SYNOPSIS, otherwise #f."
    (catch #t
      (lambda ()
        (texi->plain-text synopsis)
        '())
      (lambda (keys . args)
        (list
         (make-warning package
                       (G_ "Texinfo markup in synopsis is invalid")
                       #:field 'synopsis)))))

  (define (check-no-trailing-whitespace synopsis)
    "Check that SYNOPSIS doesn't have trailing whitespace."
    (if (string-suffix? " " synopsis)
        (list
         (make-warning package
                       (G_ "synopsis contains trailing whitespace")
                       #:field 'synopsis))
        '()))

  (define checks
    (list check-proper-start
          check-final-period
          check-start-article
          check-start-with-package-name
          check-synopsis-length
          check-texinfo-markup
          check-no-trailing-whitespace))

  (match (package-synopsis package)
    (""
     (list
      (make-warning package
                    (G_ "synopsis should not be empty")
                    #:field 'synopsis)))
    ((? string? synopsis)
     (append-map
      (lambda (proc)
        (proc synopsis))
      checks))
    (invalid
     (list
      (make-warning package
                    (G_ "invalid synopsis: ~s")
                    (list invalid)
                    #:field 'synopsis)))))

(define* (probe-uri uri #:key timeout)
  "Probe URI, a URI object, and return two values: a symbol denoting the
probing status, such as 'http-response' when we managed to get an HTTP
response from URI, and additional details, such as the actual HTTP response.

TIMEOUT is the maximum number of seconds (possibly an inexact number) to wait
for connections to complete; when TIMEOUT is #f, wait as long as needed."
  (define headers
    `((User-Agent . "GNU Guile")
      (Accept . "*/*")
      ,@(match (uri-userinfo uri)
          ((? string? str)                        ;"basic authentication"
           `((Authorization . ,(string-append "Basic "
                                              (base64-encode
                                               (string->utf8 str))))))
          (_ '()))))

  (let loop ((uri     uri)
             (visited '()))
    (match (uri-scheme uri)
      ((or 'http 'https)
       (catch #t
         (lambda ()
           (let ((port    (guix:open-connection-for-uri
                           uri #:timeout timeout))
                 (request (build-request uri #:headers headers)))
             (define response
               (dynamic-wind
                 (const #f)
                 (lambda ()
                   (write-request request port)
                   (force-output port)
                   (read-response port))
                 (lambda ()
                   (close-port port))))

             (case (response-code response)
               ((302                    ; found (redirection)
                 303                    ; see other
                 307                    ; temporary redirection
                 308)                   ; permanent redirection
                (let ((location (response-location response)))
                  (if (or (not location) (member location visited))
                      (values 'http-response response)
                      (loop location (cons location visited))))) ;follow the redirect
               ((301)                   ; moved permanently
                (let ((location (response-location response)))
                  ;; Return RESPONSE, unless the final response as we follow
                  ;; redirects is not 200.
                  (if location
                      (let-values (((status response2)
                                    (loop location (cons location visited))))
                        (case status
                          ((http-response)
                           (values 'http-response
                                   (if (= 200 (response-code response2))
                                       response
                                       response2)))
                          (else
                           (values status response2))))
                      (values 'http-response response)))) ;invalid redirect
               (else
                (values 'http-response response)))))
         (lambda (key . args)
           (case key
             ((bad-header bad-header-component)
              ;; This can happen if the server returns an invalid HTTP header,
              ;; as is the case with the 'Date' header at sqlite.org.
              (values 'invalid-http-response #f))
             ((getaddrinfo-error system-error
               gnutls-error tls-certificate-error)
              (values key args))
             (else
              (apply throw key args))))))
      ('ftp
       (catch #t
         (lambda ()
           (let ((conn (ftp-open (uri-host uri) #:timeout timeout)))
             (define response
               (dynamic-wind
                 (const #f)
                 (lambda ()
                   (ftp-chdir conn (dirname (uri-path uri)))
                   (ftp-size conn (basename (uri-path uri))))
                 (lambda ()
                   (ftp-close conn))))
             (values 'ftp-response '(ok))))
         (lambda (key . args)
           (case key
             ((ftp-error)
              (values 'ftp-response `(error ,@args)))
             ((getaddrinfo-error system-error gnutls-error)
              (values key args))
             (else
              (apply throw key args))))))
      (_
       (values 'unknown-protocol #f)))))

(define (call-with-networking-fail-safe message error-value proc)
  "Call PROC catching any network-related errors.  Upon a networking error,
display a message including MESSAGE and return ERROR-VALUE."
  (guard (c ((http-get-error? c)
             (warning (G_ "~a: HTTP GET error for ~a: ~a (~s)~%")
                      message
                      (uri->string (http-get-error-uri c))
                      (http-get-error-code c)
                      (http-get-error-reason c))
             error-value))
    (catch #t
      proc
      (match-lambda*
        (('getaddrinfo-error errcode)
         (warning (G_ "~a: host lookup failure: ~a~%")
                  message
                  (gai-strerror errcode))
         error-value)
        (('tls-certificate-error args ...)
         (warning (G_ "~a: TLS certificate error: ~a")
                  message
                  (tls-certificate-error-string args))
         error-value)
        (('gnutls-error error function _ ...)
         (warning (G_ "~a: TLS error in '~a': ~a~%")
                  message
                  function (error->string error))
         error-value)
        ((and ('system-error _ ...) args)
         (let ((errno (system-error-errno args)))
           (if (member errno (list ECONNRESET ECONNABORTED ECONNREFUSED))
               (let ((details (call-with-output-string
                                (lambda (port)
                                  (print-exception port #f (car args)
                                                   (cdr args))))))
                 (warning (G_ "~a: ~a~%") message details)
                 error-value)
               (apply throw args))))
        (args
         (apply throw args))))))

(define-syntax-rule (with-networking-fail-safe message error-value exp ...)
  (call-with-networking-fail-safe message error-value
                                  (lambda () exp ...)))

(define (tls-certificate-error-string args)
  "Return a string explaining the 'tls-certificate-error' arguments ARGS."
  (call-with-output-string
    (lambda (port)
      (print-exception port #f
                       'tls-certificate-error args))))

(define (validate-uri uri package field)
  "Return #t if the given URI can be reached, otherwise return a warning for
PACKAGE mentioning the FIELD."
  (let-values (((status argument)
                (probe-uri uri #:timeout 3)))     ;wait at most 3 seconds
    (case status
      ((http-response)
       (cond ((= 200 (response-code argument))
              (match (response-content-length argument)
                ((? number? length)
                 ;; As of July 2016, SourceForge returns 200 (instead of 404)
                 ;; with a small HTML page upon failure.  Attempt to detect
                 ;; such malicious behavior.
                 (or (> length 1000)
                     (make-warning package
                                   (G_ "URI ~a returned \
suspiciously small file (~a bytes)")
                                   (list (uri->string uri)
                                         length)
                                   #:field field)))
                (_ #t)))
             ((= 301 (response-code argument))
              (if (response-location argument)
                  (make-warning package
                                (G_ "permanent redirect from ~a to ~a")
                                (list (uri->string uri)
                                      (uri->string
                                       (response-location argument)))
                                #:field field)
                  (make-warning package
                                (G_ "invalid permanent redirect \
from ~a")
                                (list (uri->string uri))
                                #:field field)))
             (else
              (make-warning package
                            (G_ "URI ~a not reachable: ~a (~s)")
                            (list (uri->string uri)
                                  (response-code argument)
                                  (response-reason-phrase argument))
                            #:field field))))
      ((ftp-response)
       (match argument
         (('ok) #t)
         (('error port command code message)
          (make-warning package
                        (G_ "URI ~a not reachable: ~a (~s)")
                        (list (uri->string uri)
                              code (string-trim-both message))
                        #:field field))))
      ((getaddrinfo-error)
       (make-warning package
                     (G_ "URI ~a domain not found: ~a")
                     (list (uri->string uri)
                           (gai-strerror (car argument)))
                     #:field field))
      ((system-error)
       (make-warning package
                     (G_ "URI ~a unreachable: ~a")
                     (list (uri->string uri)
                           (strerror
                            (system-error-errno
                             (cons status argument))))
                     #:field field))
      ((tls-certificate-error)
       (make-warning package
                     (G_ "TLS certificate error: ~a")
                     (list (tls-certificate-error-string argument))
                     #:field field))
      ((invalid-http-response gnutls-error)
       ;; Probably a misbehaving server; ignore.
       #f)
      ((unknown-protocol)                         ;nothing we can do
       #f)
      (else
       (error "internal linter error" status)))))

(define (check-home-page package)
  "Emit a warning if PACKAGE has an invalid 'home-page' field, or if that
'home-page' is not reachable."
  (let ((uri (and=> (package-home-page package) string->uri)))
    (cond
     ((uri? uri)
      (match (validate-uri uri package 'home-page)
        ((and (? lint-warning? warning) warning)
         (list warning))
        (_ '())))
     ((not (package-home-page package))
      (if (or (string-contains (package-name package) "bootstrap")
              (string=? (package-name package) "ld-wrapper"))
          '()
          (list
           (make-warning package
                         (G_ "invalid value for home page")
                         #:field 'home-page))))
     (else
      (list
       (make-warning package
                     (G_ "invalid home page URL: ~s")
                     (list (package-home-page package))
                     #:field 'home-page))))))

(define %distro-directory
  (mlambda ()
    (dirname (search-path %load-path "gnu.scm"))))

(define (check-patch-file-names package)
  "Emit a warning if the patches requires by PACKAGE are badly named or if the
patch could not be found."
  (guard (c ((formatted-message? c)               ;raised by 'search-patch'
             (list (%make-warning package
                                  (formatted-message-string c)
                                  (formatted-message-arguments c)
                                  #:field 'source))))
    (define patches
      (match (package-source package)
        ((? origin? origin) (origin-patches origin))
        (_ '())))

    (define (starts-with-package-name? file-name)
      (and=> (string-contains file-name (package-name package))
             zero?))

    (append
     (if (every (match-lambda        ;patch starts with package name?
                  ((? string? patch)
                   (starts-with-package-name? (basename patch)))
                  ((? origin? patch)
                   (starts-with-package-name? (origin-actual-file-name patch)))
                  (_  #f))     ;must be some other file-like object
                patches)
         '()
         (list
          (make-warning
           package
           (G_ "file names of patches should start with the package name")
           #:field 'patch-file-names)))

     ;; Check whether we're reaching tar's maximum file name length.
     (let ((prefix (string-length (%distro-directory)))
           ;; Margin approximating the largest path that "make dist" might
           ;; create, with a release candidate version, 123456 commits, and
           ;; git commit hash abcde0.
           (margin (string-length "guix-92.0.0rc3-123456-abcde0/"))
           ;; Tested maximum patch file length for ustar format.
           (max    151))
       (filter-map (match-lambda
                     ((? string? patch)
                      (if (> (+ margin (if (string-prefix? (%distro-directory)
                                                           patch)
                                           (- (string-length patch) prefix)
                                           (string-length patch)))
                             max)
                          (make-warning
                           package
                           (G_ "~a: file name is too long, which may break 'make dist'")
                           (list (basename patch))
                           #:field 'patch-file-names)
                          #f))
                     (_ #f))
                   patches)))))

(define (check-patch-headers package)
  "Check that PACKAGE's patches start with a comment.  Return a list of
warnings."
  (define (blank? str)
    (string-every char-set:blank str))

  (define (patch-header-warnings patch)
    (call-with-input-file patch
      (lambda (port)
        ;; Read from PORT until a non-blank line is found or EOF is reached.
        (let loop ()
          (let ((line (read-line port)))
            (cond ((eof-object? line)
                   (list (make-warning package
                                       (G_ "~a: empty patch")
                                       (list (basename patch))
                                       #:field 'source)))
                  ((blank? line)
                   (loop))
                  ((or (string-prefix? "--- " line)
                       (string-prefix? "+++ " line)
                       (string-prefix? "diff --git " line))
                   (list (make-warning package
                                       (G_ "~a: patch lacks comment and \
upstream status")
                                       (list (basename patch))
                                       #:field 'source)))
                  (else
                   '())))))))

  (guard (c ((formatted-message? c)               ;raised by 'search-patch'
             (list (%make-warning package
                                  (formatted-message-string c)
                                  (formatted-message-arguments c)
                                  #:field 'source))))
   (let ((patches (if (origin? (package-source package))
                      (origin-patches (package-source package))
                      '())))
     (append-map (lambda (patch)
                   ;; Dismiss PATCH if it's an origin or similar.
                   (cond ((string? patch)
                          (patch-header-warnings patch))
                         ((local-file? patch)
                          (patch-header-warnings
                           (local-file-absolute-file-name patch)))
                         (else
                          '())))
                 patches))))

(define (escape-quotes str)
  "Replace any quote character in STR by an escaped quote character."
  (list->string
   (string-fold-right (lambda (chr result)
                        (match chr
                          (#\" (cons* #\\ #\"result))
                          (_   (cons chr result))))
                      '()
                      str)))

(define official-gnu-packages*
  (mlambda ()
    "A memoizing version of 'official-gnu-packages' that returns the empty
list when something goes wrong, such as a networking issue."
    (let ((gnus (false-if-exception (official-gnu-packages))))
      (or gnus '()))))

(define (check-gnu-synopsis+description package)
  "Make sure that, if PACKAGE is a GNU package, it uses the synopsis and
descriptions maintained upstream."
  (match (find (lambda (descriptor)
                 (string=? (gnu-package-name descriptor)
                           (package-name package)))
               (official-gnu-packages*))
    (#f                                   ;not a GNU package, so nothing to do
     '())
    (descriptor                                   ;a genuine GNU package
     (append
      (let ((upstream   (gnu-package-doc-summary descriptor))
            (downstream (package-synopsis package)))
        (if (and upstream
                 (or (not (string? downstream))
                     (not (string=? upstream downstream))))
            (list
             (make-warning package
                           (G_ "proposed synopsis: ~s~%")
                           (list upstream)
                           #:field 'synopsis))
            '()))

      (let ((upstream   (gnu-package-doc-description descriptor))
            (downstream (package-description package)))
        (if (and upstream
                 (or (not (string? downstream))
                     (not (string=? (fill-paragraph upstream 100)
                                    (fill-paragraph downstream 100)))))
            (list
             (make-warning
              package
              (G_ "proposed description:~%     \"~a\"~%")
              (list (fill-paragraph (escape-quotes upstream) 77 7))
              #:field 'description))
            '()))))))

(define (origin-uris origin)
  "Return the list of URIs (strings) for ORIGIN."
  (match (origin-uri origin)
    ((? string? uri)
     (list uri))
    ((uris ...)
     uris)))

(define (svn-reference-uri-with-userinfo ref)
  "Return the URI of REF, an <svn-reference> or <svn-multi-reference> object,
but with an additional 'userinfo' part corresponding to REF's user name and
password, provided REF's URI is HTTP or HTTPS."
  ;; XXX: For lack of record type inheritance.
  (define ->url
    (if (svn-reference? ref)
        svn-reference-url
        svn-multi-reference-url))
  (define ->user-name
    (if (svn-reference? ref)
        svn-reference-user-name
        svn-multi-reference-user-name))
  (define ->password
    (if (svn-reference? ref)
        svn-reference-password
        svn-multi-reference-password))

  (let ((uri (string->uri (->url ref))))
    (if (and (->user-name ref)
             (memq (uri-scheme uri) '(http https)))
        (build-uri (uri-scheme uri)
                   #:userinfo
                   (string-append (->user-name ref)
                                  (if (->password ref)
                                      (string-append
                                       ":" (->password ref))
                                      ""))
                   #:host (uri-host uri)
                   #:port (uri-port uri)
                   #:query (uri-query uri)
                   #:fragment (uri-fragment uri))
        uri)))

(define (check-source package)
  "Emit a warning if PACKAGE has an invalid 'source' field, or if that
'source' is not reachable."
  (define (warnings-for-uris uris)
    (let loop ((uris uris)
               (warnings '()))
      (match uris
        (()
         (reverse warnings))
        ((uri rest ...)
         (match (validate-uri uri package 'source)
           (#t
            ;; We found a working URL, so stop right away.
            '())
           (#f
            ;; Unsupported URL or other error, skip.
            (loop rest warnings))
           ((? lint-warning? warning)
            (loop rest (cons warning warnings))))))))

  (let ((origin (package-source package)))
    (if (origin? origin)
        (cond
         ((eq? (origin-method origin) url-fetch)
          (let* ((uris     (append-map (cut maybe-expand-mirrors <> %mirrors)
                                       (map string->uri (origin-uris origin))))
                 (warnings (warnings-for-uris uris)))

            ;; Just make sure that at least one of the URIs is valid.
            (if (= (length uris) (length warnings))
                ;; When everything fails, report all of WARNINGS, otherwise don't
                ;; report anything.
                ;;
                ;; XXX: Ideally we'd still allow warnings to be raised if *some*
                ;; URIs are unreachable, but distinguish that from the error case
                ;; where *all* the URIs are unreachable.
                (cons*
                 (make-warning package
                               (G_ "all the source URIs are unreachable:")
                               #:field 'source)
                 warnings)
                '())))
         ((git-reference? (origin-uri origin))
          (warnings-for-uris
           (list (string->uri (git-reference-url (origin-uri origin))))))
         ((or (svn-reference? (origin-uri origin))
              (svn-multi-reference? (origin-uri origin)))
          (let ((uri (svn-reference-uri-with-userinfo (origin-uri origin))))
            (if (memq (uri-scheme uri) '(http https))
                (warnings-for-uris (list uri))
                '())))                            ;TODO: handle svn:// URLs
         (else
          '()))
        '())))

(define (check-source-file-name package)
  "Emit a warning if PACKAGE's origin has no meaningful file name."
  (define (origin-file-name-valid? origin)
    ;; Return #f if the source file name contains only a version or is #f;
    ;; indicates that the origin needs a 'file-name' field.
    (let ((file-name (origin-actual-file-name origin))
          (version (package-version package)))
      (and file-name
           ;; Common in many projects is for the filename to start
           ;; with a "v" followed by the version,
           ;; e.g. "v3.2.0.tar.gz".
           (not (string-match (string-append "^v?" version) file-name)))))

  (let ((origin (package-source package)))
    (if (or (not (origin? origin)) (origin-file-name-valid? origin))
        '()
        (list
         (make-warning package
                       (G_ "the source file name should contain the package name")
                       #:field 'source)))))

(define (check-source-unstable-tarball package)
  "Emit a warning if PACKAGE's source is an autogenerated tarball."
  (define (check-source-uri uri)
    (if (and (string=? (uri-host (string->uri uri)) "github.com")
             (match (split-and-decode-uri-path
                     (uri-path (string->uri uri)))
               ((_ _ "archive" _ ...) #t)
               (_ #f)))
        (make-warning package
                      (G_ "the source URI should not be an autogenerated tarball")
                      #:field 'source)
        #f))

  (let ((origin (package-source package)))
    (if (and (origin? origin)
             (eqv? (origin-method origin) url-fetch))
        (filter-map check-source-uri
                    (origin-uris origin))
        '())))

(define (check-mirror-url package)
  "Check whether PACKAGE uses source URLs that should be 'mirror://'."
  (define (check-mirror-uri uri)
    (define rewritten-uri
      (uri-mirror-rewrite uri))

    (and (not (string=? uri rewritten-uri))
         (make-warning package (G_ "URL should be '~a'")
                       (list rewritten-uri)
                       #:field 'source)))

  (let ((origin (package-source package)))
    (if (and (origin? origin)
             (eqv? (origin-method origin) url-fetch))
        (let ((uris (origin-uris origin)))
          (filter-map check-mirror-uri uris))
        '())))

(define* (check-github-url package #:key (timeout 3))
  "Check whether PACKAGE uses source URLs that redirect to GitHub."
  (define (follow-redirect url)
    (let* ((uri      (string->uri url))
           (port     (guix:open-connection-for-uri uri #:timeout timeout))
           (response (http-head uri #:port port)))
      (close-port port)
      (case (response-code response)
        ((301 302)
         (uri->string (assoc-ref (response-headers response) 'location)))
        (else #f))))

  (define (follow-redirects-to-github uri)
    (cond
     ((string-prefix? "https://github.com/" uri) uri)
     ((string-prefix? "http" uri)
      (and=> (follow-redirect uri) follow-redirects-to-github))
     ;; Do not attempt to follow redirects on URIs other than http and https
     ;; (such as mirror, file)
     (else #f)))

  (let ((origin (package-source package)))
    (if (and (origin? origin)
             (eqv? (origin-method origin) url-fetch))
        (filter-map
         (lambda (uri)
           (and=> (with-networking-fail-safe
                   (format #f (G_ "while accessing '~a'") uri)
                   #f
                   (follow-redirects-to-github uri))
                  (lambda (github-uri)
                    (and (not (string=? github-uri uri))
                         (make-warning
                          package
                          (G_ "URL should be '~a'")
                          (list github-uri)
                          #:field 'source)))))
         (origin-uris origin))
        '())))

;; Guile 3.0.0 does not export this predicate.
(define exception-with-kind-and-args?
  (exception-predicate &exception-with-kind-and-args))

(define (check-optional-tests package)
  "Emit a warning if the test suite is run unconditionally."
  (define (sexp-contains-atom? sexp atom)
    "Test if SEXP contains ATOM."
    (if (pair? sexp)
        (or (sexp-contains-atom? (car sexp) atom)
            (sexp-contains-atom? (cdr sexp) atom))
        (eq? sexp atom)))
  (define (sexp-uses-tests?? sexp)
    "Test if SEXP contains the symbol 'tests?'."
    (sexp-contains-atom? sexp 'tests?))
  (define (check-procedure-body code)
    (if (sexp-uses-tests?? code)
        '()
        (list (make-warning package
                            ;; TRANSLATORS: check and #:tests? are a
                            ;; Scheme symbol and keyword respectively
                            ;; and should not be translated.
                            (G_ "the 'check' phase should respect #:tests?")
                            #:field 'arguments))))
  (define (check-check-procedure expression)
    (find-procedure-body expression check-procedure-body))
  (define (check-phases-delta delta)
    (match delta
      (`(replace 'check ,expression)
       (check-check-procedure expression))
      (_ '())))
  (define (check-phases-deltas deltas)
    (append-map check-phases-delta deltas))
  (find-phase-deltas package check-phases-deltas))

(define* (check-derivation package #:key store)
  "Emit a warning if we fail to compile PACKAGE to a derivation."
  (define (try store system)
    (guard (c ((store-protocol-error? c)
               (make-warning package
                             (G_ "failed to create ~a derivation: ~a")
                             (list system
                                   (store-protocol-error-message c))))
              ((exception-with-kind-and-args? c)
               (make-warning package
                             (G_ "failed to create ~a derivation: ~s")
                             (list system
                                   (cons (exception-kind c)
                                         (exception-args c)))))
              ((message-condition? c)
               (make-warning package
                             (G_ "failed to create ~a derivation: ~a")
                             (list system
                                   (condition-message c))))
              ((formatted-message? c)
               (let ((str (apply format #f
                                 (formatted-message-string c)
                                 (formatted-message-arguments c))))
                 (make-warning package
                               (G_ "failed to create ~a derivation: ~a")
                               (list system str))))
              (else
               (make-warning package
                             (G_ "failed to create ~a derivation: ~a")
                             (list system c))))
      (parameterize ((%graft? #f))
        (package-derivation store package system #:graft? #f)

        ;; If there's a replacement, make sure we can compute its
        ;; derivation.
        (match (package-replacement package)
          (#f #t)
          (replacement
           (package-derivation store replacement system
                               #:graft? #f))))))

  (define (check-with-store store)
    (filter lint-warning?
            (map (cut try store <>) (package-supported-systems package))))

  ;; For backwards compatability, don't rely on store being set
  (or (and=> store check-with-store)
      (with-store store
        (check-with-store store))))

(define* (check-profile-collisions package #:key store)
  "Check for collisions that would occur when installing PACKAGE as a result
of the propagated inputs it pulls in."
  (define (do-check store)
    (guard (c ((profile-collision-error? c)
               (let ((first  (profile-collision-error-entry c))
                     (second (profile-collision-error-conflict c)))
                 (define format
                   (if (string=? (manifest-entry-version first)
                                 (manifest-entry-version second))
                       manifest-entry-item
                       (lambda (entry)
                         (string-append (manifest-entry-name entry) "@"
                                        (manifest-entry-version entry)))))

                 (list (make-warning package
                                     (G_ "propagated inputs ~a and ~a collide")
                                     (list (format first)
                                           (format second)))))))
      ;; Disable grafts to avoid building PACKAGE and its dependencies.
      (parameterize ((%graft? #f))
        (run-with-store store
          (mbegin %store-monad
            (check-for-collisions (packages->manifest (list package))
                                  (%current-system))
            (return '()))))))

  (if store
      (do-check store)
      (with-store store
        (do-check store))))

(define (check-license package)
  "Warn about type errors of the 'license' field of PACKAGE."
  (match (package-license package)
    ((or (? license?)
         ((? license?) ...))
     '())
    (x
     (list
      (make-warning package (G_ "invalid license field")
                    #:field 'license)))))

(define (current-vulnerabilities*)
  "Like 'current-vulnerabilities', but return the empty list upon networking
or HTTP errors.  This allows network-less operation and makes problems with
the NIST server non-fatal."
  (with-networking-fail-safe (G_ "while retrieving CVE vulnerabilities")
                             '()
                             (current-vulnerabilities #:timeout 4)))

(define package-vulnerabilities
  (let ((lookup (delay (vulnerabilities->lookup-proc
                        (current-vulnerabilities*)))))
    (lambda (package)
      "Return a list of vulnerabilities affecting PACKAGE."
      ;; First we retrieve the Common Platform Enumeration (CPE) name and
      ;; version for PACKAGE, then we can pass them to LOOKUP.
      (let ((name    (or (assoc-ref (package-properties package)
                                    'cpe-name)
                         (package-name package)))
            (version (or (assoc-ref (package-properties package)
                                    'cpe-version)
                         (package-version package))))
        ((force lookup) name version)))))

(define* (check-vulnerabilities package
                                #:optional (package-vulnerabilities
                                            package-vulnerabilities))
  "Check for known vulnerabilities for PACKAGE.  Obtain the list of
vulnerability records for PACKAGE by calling PACKAGE-VULNERABILITIES."
  (let ((package (or (package-replacement package) package)))
    (match (package-vulnerabilities package)
      (()
       '())
      ((vulnerabilities ...)
       (let* ((patched    (package-patched-vulnerabilities package))
              (known-safe (or (assq-ref (package-properties package)
                                        'lint-hidden-cve)
                              '()))
              (unpatched (remove (lambda (vuln)
                                   (let ((id (vulnerability-id vuln)))
                                     (or (member id patched)
                                         (member id known-safe))))
                                 vulnerabilities)))
         (if (null? unpatched)
             '()
             (list
              (make-warning
               package
               (G_ "probably vulnerable to ~a")
               (list (string-join (map vulnerability-id unpatched)
                                  ", "))))))))))

(define (check-for-updates package)
  "Check if there is an update available for PACKAGE."
  (match (lookup-updater package)
    (#f
     (list (make-warning package (G_ "no updater for ~a")
                         (list (package-name package))
                         #:field 'source)))
    ((? upstream-updater? updater)
     (match (with-networking-fail-safe
             (format #f (G_ "while retrieving upstream info for '~a'")
                     (package-name package))
             #f
             (package-latest-release package))
       ((? upstream-source? source)
        (if (version>? (upstream-source-version source)
                       (package-version package))
            (list
             (make-warning package
                           (G_ "can be upgraded to ~a")
                           (list (upstream-source-version source))
                           #:field 'version))
            '()))
       (#f                                       ;cannot find upstream release
        (list (make-warning package
                            (G_ "updater '~a' failed to find \
upstream releases")
                            (list (upstream-updater-name updater))
                            #:field 'source)))))))


(define (lookup-disarchive-spec hash)
  "If Disarchive mirrors have a spec for HASH, return the list of SWH
directory identifiers the spec refers to.  Otherwise return #f."
  (define (extract-swh-id spec)
    ;; Return the list of SWH directory identifiers SPEC refers to, where SPEC
    ;; is a Disarchive sexp.  Instead of attempting to parse it, traverse it
    ;; in a pretty unintelligent fashion.
    (let loop ((sexp spec)
               (ids '()))
      (match sexp
        ((? string? str)
         (let ((prefix "swh:1:dir:"))
           (if (string-prefix? prefix str)
               (cons (string-drop str (string-length prefix)) ids)
               ids)))
        ((head tail ...)
         (loop tail (loop head ids)))
        (_ ids))))

  (any (lambda (mirror)
         (with-networking-fail-safe
          (format #f (G_ "failed to access Disarchive database at ~a")
                  mirror)
          #f
          (guard (c ((http-get-error? c) #f))
            (let* ((url (string-append mirror
                                       (symbol->string
                                        (content-hash-algorithm hash))
                                       "/"
                                       (bytevector->base16-string
                                        (content-hash-value hash))))
                   (port (http-fetch (string->uri url) #:text? #t))
                   (spec (read port)))
              (close-port port)
              (extract-swh-id spec)))))
       %disarchive-mirrors))

(define (check-archival package)
  "Check whether PACKAGE's source code is archived on Software Heritage.  If
it's not, and if its source code is a VCS snapshot, then send a \"save\"
request to Software Heritage.

Software Heritage imposes limits on the request rate per client IP address.
This checker prints a notice and stops doing anything once that limit has been
reached."
  (define (response->warning url method response)
    (if (request-rate-limit-reached? url method)
        (list (make-warning package
                            (G_ "Software Heritage rate limit reached; \
try again later")
                            #:field 'source))
        (list (make-warning package
                            (G_ "'~a' returned ~a")
                            (list url (response-code response))
                            #:field 'source))))

  (define skip-key (gensym "skip-archival-check"))

  (define (skip-when-limit-reached url method)
    (or (not (request-rate-limit-reached? url method))
        (throw skip-key #t)))

  (parameterize ((%allow-request? skip-when-limit-reached))
    (catch #t
      (lambda ()
        (match (and (origin? (package-source package))
                    (package-source package))
          (#f                                     ;no source
           '())
          ((= origin-uri (? git-reference? reference))
           (define url
             (git-reference-url reference))
           (define commit
             (git-reference-commit reference))

           (match (if (commit-id? commit)
                      (or (lookup-revision commit)
                          (lookup-origin-revision url commit))
                      (lookup-origin-revision url commit))
             ((? revision? revision)
              '())
             (#f
              ;; Revision is missing from the archive, attempt to save it.
              (catch 'swh-error
                (lambda ()
                  (save-origin (git-reference-url reference) "git")
                  (list (make-warning
                         package
                         ;; TRANSLATORS: "Software Heritage" is a proper noun
                         ;; that must remain untranslated.  See
                         ;; <https://www.softwareheritage.org>.
                         (G_ "scheduled Software Heritage archival")
                         #:field 'source)))
                (lambda (key url method response . _)
                  (cond ((= 429 (response-code response))
                         (list (make-warning
                                package
                                (G_ "archival rate limit exceeded; \
try again later")
                                #:field 'source)))
                        (else
                         (response->warning url method response))))))))
          ((? origin? origin)
           ;; Since "save" origins are not supported for non-VCS source, all
           ;; we can do is tell whether a given tarball is available or not.
           (if (and=> (origin-hash origin)          ;XXX: for ungoogled-chromium
                      content-hash-value)           ;& icecat
               (let ((hash (origin-hash origin)))
                 (match (lookup-content (content-hash-value hash)
                                        (symbol->string
                                         (content-hash-algorithm hash)))
                   (#f
                    ;; If SWH doesn't have HASH as is, it may be because it's
                    ;; a hand-crafted tarball.  In that case, check whether
                    ;; the Disarchive database has an entry for that tarball.
                    (match (lookup-disarchive-spec hash)
                      (#f
                       (list (make-warning package
                                           (G_ "source not archived on Software \
Heritage and missing from the Disarchive database")
                                           #:field 'source)))
                      (directory-ids
                       (match (find (lambda (id)
                                      (not (lookup-directory id)))
                                    directory-ids)
                         (#f '())
                         (id
                          (list (make-warning package
                                              (G_ "\
Disarchive entry refers to non-existent SWH directory '~a'")
                                              (list id)
                                              #:field 'source)))))))
                   ((? content?)
                    '())))
               '()))
          (_
           (list (make-warning package
                               (G_ "unsupported source type")
                               #:field 'source)))))
      (match-lambda*
        (('swh-error url method response)
         (response->warning url method response))
        ((key . args)
         (if (eq? key skip-key)
             '()
             (with-networking-fail-safe
              (G_ "while connecting to Software Heritage")
              '()
              (apply throw key args))))))))

(define (check-haskell-stackage package)
  "Check whether PACKAGE is a Haskell package ahead of the current
Stackage LTS version."
  (match (with-networking-fail-safe
          (format #f (G_ "while retrieving upstream info for '~a'")
                  (package-name package))
          #f
          (package-latest-release package (list %stackage-updater)))
    ((? upstream-source? source)
     (if (version>? (package-version package)
                    (upstream-source-version source))
         (list
          (make-warning package
                        (G_ "ahead of Stackage LTS version ~a")
                        (list (upstream-source-version source))
                        #:field 'version))
         '()))
    (#f '())))

\f
;;;
;;; Source code formatting.
;;;

(define (report-tabulations package line line-number)
  "Warn about tabulations found in LINE."
  (match (string-index line #\tab)
    (#f #f)
    (index
     (make-warning package
                   (G_ "tabulation on line ~a, column ~a")
                   (list line-number index)
                   #:location
                   (location (package-file package)
                             line-number
                             index)))))

(define (report-trailing-white-space package line line-number)
  "Warn about trailing white space in LINE."
  (and (not (or (string=? line (string-trim-right line))
                (string=? line (string #\page))))
       (make-warning package
                     (G_ "trailing white space on line ~a")
                     (list line-number)
                     #:location
                     (location (package-file package)
                               line-number
                               0))))

(define (report-long-line package line line-number)
  "Emit a warning if LINE is too long."
  ;; Note: We don't warn at 80 characters because sometimes hashes and URLs
  ;; make it hard to fit within that limit and we want to avoid making too
  ;; much noise.
  (and (> (string-length line) 90)
       (make-warning package
                     (G_ "line ~a is way too long (~a characters)")
                     (list line-number (string-length line))
                     #:location
                     (location (package-file package)
                               line-number
                               0))))

(define %hanging-paren-rx
  (make-regexp "^[[:blank:]]*[()]+[[:blank:]]*$"))

(define (report-lone-parentheses package line line-number)
  "Emit a warning if LINE contains hanging parentheses."
  (and (regexp-exec %hanging-paren-rx line)
       (make-warning package
                     (G_ "parentheses feel lonely, \
move to the previous or next line")
                     (list line-number)
                     #:location
                     (location (package-file package)
                               line-number
                               0))))

(define %formatting-reporters
  ;; List of procedures that report formatting issues.  These are not separate
  ;; checkers because they would need to re-read the file.
  (list report-tabulations
        report-trailing-white-space
        report-long-line
        report-lone-parentheses))

(define* (report-formatting-issues package file starting-line
                                   #:key (reporters %formatting-reporters))
  "Report white-space issues in FILE starting from STARTING-LINE, and report
them for PACKAGE."
  (define (sexp-last-line port)
    ;; Return the last line of the sexp read from PORT or an estimate thereof.
    (define &failure (list 'failure))

    (let ((start      (ftell port))
          (start-line (port-line port))
          (sexp       (catch 'read-error
                        (lambda () (read port))
                        (const &failure))))
      (let ((line (port-line port)))
        (seek port start SEEK_SET)
        (set-port-line! port start-line)
        (if (eq? sexp &failure)
            (+ start-line 60)                     ;conservative estimate
            line))))

  (call-with-input-file file
    (lambda (port)
      (let loop ((line-number 1)
                 (last-line #f)
                 (warnings '()))
        (let ((line (read-line port)))
          (if (or (eof-object? line)
                  (and last-line (> line-number last-line)))
              warnings
              (if (and (= line-number starting-line)
                       (not last-line))
                  (loop (+ 1 line-number)
                        (+ 1 (sexp-last-line port))
                        warnings)
                  (loop (+ 1 line-number)
                        last-line
                        (append
                         warnings
                         (if (< line-number starting-line)
                             '()
                             (filter-map (lambda (report)
                                           (report package line line-number))
                                         reporters)))))))))))

(define (check-formatting package)
  "Check the formatting of the source code of PACKAGE."
  (let ((location (package-location package)))
    (if location
        ;; Report issues starting from the line before the 'package'
        ;; form, which usually contains the 'define' form.
        (let ((line (- (location-line location) 1)))
          (match (search-path %load-path (location-file location))
            ((? string? file)
             (report-formatting-issues package file line))
            (#f
             ;; It could be that LOCATION lists a "true" relative file
             ;; name--i.e., not relative to an element of %LOAD-PATH.
             (let ((file (location-file location)))
               (if (file-exists? file)
                   (report-formatting-issues package file line)
                   (list (make-warning package
                                       (G_ "source file not found"))))))))
        '())))

\f
;;;
;;; List of checkers.
;;;

(define %local-checkers
  (list
   (lint-checker
     (name        'name)
     (description "Validate package names")
     (check       check-name))
   (lint-checker
     (name        'tests-true)
     (description "Check if tests are explicitly enabled")
     (check       check-tests-true))
   (lint-checker
     (name        'description)
     (description "Validate package descriptions")
     (check       check-description-style))
   (lint-checker
     (name        'inputs-should-be-native)
     (description "Identify inputs that should be native inputs")
     (check       check-inputs-should-be-native))
   (lint-checker
     (name        'inputs-should-not-be-input)
     (description "Identify inputs that shouldn't be inputs at all")
     (check       check-inputs-should-not-be-an-input-at-all))
   (lint-checker
     (name        'input-labels)
     (description "Identify input labels that do not match package names")
     (check       check-input-labels))
   (lint-checker
     (name        'wrapper-inputs)
     (description "Make sure 'wrap-program' can finds its interpreter.")
     (check       check-wrapper-inputs))
   (lint-checker
     (name        'license)
     ;; TRANSLATORS: <license> is the name of a data type and must not be
     ;; translated.
     (description "Make sure the 'license' field is a <license> \
or a list thereof")
     (check       check-license))
   (lint-checker
     (name        'optional-tests)
     (description "Make sure tests are only run when requested")
     (check       check-optional-tests))
   (lint-checker
     (name        'mirror-url)
     (description "Suggest 'mirror://' URLs")
     (check       check-mirror-url))
   (lint-checker
     (name        'source-file-name)
     (description "Validate file names of sources")
     (check       check-source-file-name))
   (lint-checker
     (name        'source-unstable-tarball)
     (description "Check for autogenerated tarballs")
     (check       check-source-unstable-tarball))
   (lint-checker
     (name            'derivation)
     (description     "Report failure to compile a package to a derivation")
     (check           check-derivation)
     (requires-store? #t))
   (lint-checker
     (name            'profile-collisions)
     (description     "Report collisions that would occur due to propagated inputs")
     (check           check-profile-collisions)
     (requires-store? #t))
   (lint-checker
    (name        'patch-file-names)
    (description "Validate file names and availability of patches")
    (check       check-patch-file-names))
   (lint-checker
    (name        'patch-headers)
    (description "Validate patch headers")
    (check       check-patch-headers))
   (lint-checker
     (name        'formatting)
     (description "Look for formatting issues in the source")
     (check       check-formatting))))

(define %network-dependent-checkers
  (list
   (lint-checker
     (name        'synopsis)
     (description "Validate package synopses")
     (check       check-synopsis-style))
   (lint-checker
     (name        'gnu-description)
     (description "Validate synopsis & description of GNU packages")
     (check       check-gnu-synopsis+description))
   (lint-checker
     (name        'home-page)
     (description "Validate home-page URLs")
     (check       check-home-page))
   (lint-checker
     (name        'source)
     (description "Validate source URLs")
     (check       check-source))
   (lint-checker
     (name        'github-url)
     (description "Suggest GitHub URLs")
     (check       check-github-url))
   (lint-checker
     (name        'cve)
     (description "Check the Common Vulnerabilities and Exposures\
 (CVE) database")
     (check       check-vulnerabilities))
   (lint-checker
     (name        'refresh)
     (description "Check the package for new upstream releases")
     (check       check-for-updates))
   (lint-checker
     (name        'archival)
     (description "Ensure source code archival on Software Heritage")
     (check       check-archival))
   (lint-checker
     (name        'haskell-stackage)
     (description "Ensure Haskell packages use Stackage LTS versions")
     (check       check-haskell-stackage))))

(define %all-checkers
  (append %local-checkers
          %network-dependent-checkers))

debug log:

solving 26d8f59a2c ...
found 26d8f59a2c in https://yhetil.org/guix/877d0beh4i.fsf@contorta/
found 8e3976171f in https://git.savannah.gnu.org/cgit/guix.git
preparing index
index prepared:
100644 8e3976171f37a98bf17d7c54c645cceca79d0acd	guix/lint.scm

applying [1/1] https://yhetil.org/guix/877d0beh4i.fsf@contorta/
diff --git a/guix/lint.scm b/guix/lint.scm
index 8e3976171f..26d8f59a2c 100644

Checking patch guix/lint.scm...
Applied patch guix/lint.scm cleanly.

index at:
100644 26d8f59a2c5513e10a17e32b6b0b7edbd082972a	guix/lint.scm

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this external index

	https://git.savannah.gnu.org/cgit/guix.git

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.