unofficial mirror of guix-patches@gnu.org 
 help / color / mirror / code / Atom feed
blob 40fa6759ae6ff753d56101ae34e41aad6be272b4 4824 bytes (raw)
name: guix/scripts/import.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
 
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013, 2014, 2020, 2021 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2014 David Thompson <davet@gnu.org>
;;; Copyright © 2018 Kyle Meyer <kyle@kyleam.com>
;;; Copyright © 2019 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2021 Simon Tournier <zimon.toutoune@gmail.com>
;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
;;;
;;; 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 scripts import)
  #:use-module (guix ui)
  #:use-module (guix scripts)
  #:use-module (guix utils)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-11)
  #:use-module (srfi srfi-26)
  #:use-module (srfi srfi-37)
  #:use-module (ice-9 format)
  #:use-module (ice-9 match)
  #:use-module (ice-9 pretty-print)
  #:export (%standard-import-options
            guix-import))

\f
;;;
;;; Helper.
;;;

(define (newline-rewriting-port output)
  "Return an output port that rewrites strings containing the \\n escape
to an actual newline.  This works around the behavior of `pretty-print'
and `write', which output these as \\n instead of actual newlines,
whereas we want the `description' field to contain actual newlines
rather than \\n."
  (define (write-string str)
    (let loop ((chars (string->list str)))
      (match chars
        (()
         #t)
        ((#\\ #\n rest ...)
         (newline output)
         (loop rest))
        ((chr rest ...)
         (write-char chr output)
         (loop rest)))))

  (make-soft-port (vector (cut write-char <>)
                          write-string
                          (lambda _ #t)           ; flush
                          #f
                          (lambda _ #t)           ; close
                          #f)
                  "w"))

\f
;;;
;;; Command line options.
;;;

(define %standard-import-options '())

\f
;;;
;;; Entry point.
;;;

(define importers '("gnu" "pypi" "cpan" "hackage" "stackage" "egg" "elpa"
                    "gem" "go" "cran" "crate" "texlive" "json" "opam"
                    "minetest"))

(define (resolve-importer name)
  (let ((module (resolve-interface
                 `(guix scripts import ,(string->symbol name))))
        (proc (string->symbol (string-append "guix-import-" name))))
    (module-ref module proc)))

(define (show-help)
  (display (G_ "Usage: guix import IMPORTER ARGS ...
Run IMPORTER with ARGS.\n"))
  (newline)
  (display (G_ "IMPORTER must be one of the importers listed below:\n"))
  (newline)
  (format #t "~{   ~a~%~}" importers)
  (display (G_ "
  -h, --help             display this help and exit"))
  (display (G_ "
  -V, --version          display version information and exit"))
  (newline)
  (show-bug-report-information))

(define-command (guix-import . args)
  (category packaging)
  (synopsis "import a package definition from an external repository")

  (match args
    (()
     (format (current-error-port)
             (G_ "guix import: missing importer name~%")))
    ((or ("-h") ("--help"))
     (show-help)
     (exit 0))
    ((or ("-V") ("--version"))
     (show-version-and-exit "guix import"))
    ((importer args ...)
     (if (member importer importers)
         (let ((print (lambda (expr)
                        (pretty-print expr (newline-rewriting-port
                                            (current-output-port))
                                      #:max-expr-width 80))))
           (match (apply (resolve-importer importer) args)
             ((and expr (or ('package _ ...)
                            ('let _ ...)
                            ('define-public _ ...)))
              (print expr))
             ((? list? expressions)
              (for-each (lambda (expr)
                          (print expr)
                          (newline))
                        expressions))
             (x
              (leave (G_ "'~a' import failed~%") importer))))
         (let ((hint (string-closest importer importers #:threshold 3)))
           (report-error (G_ "~a: invalid importer~%") importer)
           (when hint
             (display-hint
              (format #f (G_ "Did you mean @code{~a}?~%") hint)))
           (exit 1))))))

debug log:

solving 40fa6759ae ...
found 40fa6759ae in https://git.savannah.gnu.org/cgit/guix.git

(*) 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 public inbox

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

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).