[bug#43160] [PATCH v2 4/4] gnu: linux-libre: Compare generated sources against Linux-libre releases.

[Maxim Cournoyer <maxim.cournoyer@gmail.com>]

* gnu/packages/linux.scm (make-linux-libre-source): Rename the UPSTREAM-SOURCE
parameter to LINUX-UPSTREAM-SOURCE.  Add a new LINUX-LIBRE-UPSTREAM-SOURCE
parameter.  Update doc.  Adjust variable names.  Capitalize "Linux" in the
user messages.  Remove empty directories from the generated sources, then
invoke diff between these sources and those of the corresponding Linux-libre
release.
(%upstream-linux-source): Convert the hash as base32 inside the definition, to
simplify its use.
(%upstream-linux-libre-source): New procedure.
(linux-libre-5.8-pristine-source): Add a LIBRE-HASH binding and use it with
%UPSTREAM-LINUX-LIBRE-SOURCE to provide the Linux-libre release origin to the
make-linux-libre-source procedure call.
(linux-libre-5.4-pristine-source): Likewise.
(linux-libre-4.19-pristine-source): Likewise.
(linux-libre-4.14-pristine-source): Likewise.
(linux-libre-4.9-pristine-source): Likewise.
(linux-libre-4.4-pristine-source): Likewise.
---
 gnu/packages/linux.scm | 63 ++++++++++++++++++++++++++++++++----------
 1 file changed, 48 insertions(+), 15 deletions(-)

diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm
index e177386312..020eb1670c 100644
--- a/gnu/packages/linux.scm
+++ b/gnu/packages/linux.scm
@@ -258,10 +258,14 @@ from forcing GEXP-PROMISE."
                       #:guile-for-build guile)))
 
 (define (make-linux-libre-source version
-                                 upstream-source
+                                 linux-upstream-source
+                                 linux-libre-upstream-source
                                  deblob-scripts)
   "Return a 'computed' origin that generates a Linux-libre tarball from the
-corresponding UPSTREAM-SOURCE (an origin), using the given DEBLOB-SCRIPTS."
+corresponding LINUX-UPSTREAM-SOURCE (an origin), using the given
+DEBLOB-SCRIPTS.  The generated Linux-libre source is compared against the
+corresponding LINUX-LIBRE-UPSTREAM-SOURCE upstream release (an origin), to
+ensure correctness."
   (match deblob-scripts
     ((deblob-version (? origin? deblob) (? origin? deblob-check))
      (unless (string=? deblob-version (version-major+minor version))
@@ -318,14 +322,14 @@ corresponding UPSTREAM-SOURCE (an origin), using the given DEBLOB-SCRIPTS."
                       (("/bin/sed") (which "sed"))
                       (("/usr/bin/python") (which "python"))))
 
-                  (if (file-is-directory? #+upstream-source)
+                  (if (file-is-directory? #+linux-upstream-source)
                       (begin
-                        (format #t "Copying upstream linux source...~%")
-                        (invoke "cp" "--archive" #+upstream-source dir)
+                        (format #t "Copying upstream Linux source...~%")
+                        (invoke "cp" "--archive" #+linux-upstream-source dir)
                         (invoke "chmod" "--recursive" "u+w" dir))
                       (begin
-                        (format #t "Unpacking upstream linux tarball...~%")
-                        (invoke "tar" "xf" #$upstream-source)
+                        (format #t "Unpacking upstream Linux tarball...~%")
+                        (invoke "tar" "xf" #$linux-upstream-source)
                         (match (scandir "."
                                         (lambda (name)
                                           (and (not (member name '("." "..")))
@@ -352,7 +356,16 @@ corresponding UPSTREAM-SOURCE (an origin), using the given DEBLOB-SCRIPTS."
 
                   (format #t "~%Scanning the generated tarball for blobs...~%")
                   (invoke "/tmp/bin/deblob-check" "--use-awk" "--list-blobs"
-                          #$output))))))))))
+                          #$output)
+
+                  (format #t "~%Comparing with the upstream Linux-libre \
+release...~%")
+                  ;; Git doesn't track empty directories, so remove them from
+                  ;; our local tree for the sake of comparison.
+                  (invoke "find" dir "-type" "d" "-empty" "-delete")
+                  (invoke "diff" "-ur"
+                          dir
+                          #+linux-libre-upstream-source))))))))))
 
 \f
 ;;;
@@ -381,55 +394,75 @@ corresponding UPSTREAM-SOURCE (an origin), using the given DEBLOB-SCRIPTS."
     (uri (string-append "mirror://kernel.org"
                         "/linux/kernel/v" (version-major version) ".x/"
                         "linux-" version ".tar.xz"))
-    (sha256 hash)))
+    (sha256 (base32 hash))))
 
+(define (%upstream-linux-libre-source version hash)
+  (origin
+    (method git-fetch)
+    (uri (git-reference
+          (url "git://linux-libre.fsfla.org/releases.git")
+          (commit (string-append "sources/v" version "-gnu"))))
+    (file-name (git-file-name "linux-libre-source" version))
+    (sha256 (base32 hash))))
 
 (define-public linux-libre-5.8-version "5.8.5")
 (define-public linux-libre-5.8-pristine-source
   (let ((version linux-libre-5.8-version)
-        (hash (base32 "0zwl0nk3x6fxwsbnmpx1drh7v0116yhgamisb1pghd472mmw6klx")))
+        (hash "0zwl0nk3x6fxwsbnmpx1drh7v0116yhgamisb1pghd472mmw6klx")
+        (libre-hash "0blgkbfvl5p6y6fj0xkdnd0dk2qla02pc37gj7dc3ha0asxv4mp8"))
    (make-linux-libre-source version
                             (%upstream-linux-source version hash)
+                            (%upstream-linux-libre-source version libre-hash)
                             deblob-scripts-5.8)))
 
 (define-public linux-libre-5.4-version "5.4.61")
 (define-public linux-libre-5.4-pristine-source
   (let ((version linux-libre-5.4-version)
-        (hash (base32 "197y2yb60m1k8i7mig4pa9wsrklfxq81ba3zfahwb2b31w2kvwc6")))
+        (hash "197y2yb60m1k8i7mig4pa9wsrklfxq81ba3zfahwb2b31w2kvwc6")
+        (libre-hash "1ycbalnlmgbaq3yh7yc7l8gw7c8d2x4jbwildf04zgfq9g0lv78m"))
    (make-linux-libre-source version
                             (%upstream-linux-source version hash)
+                            (%upstream-linux-libre-source version libre-hash)
                             deblob-scripts-5.4)))
 
 (define-public linux-libre-4.19-version "4.19.142")
 (define-public linux-libre-4.19-pristine-source
   (let ((version linux-libre-4.19-version)
-        (hash (base32 "19372sri4962dqf5rbr211lrfpckmj11kxsginfcwwid4hfdn4k9")))
+        (hash "19372sri4962dqf5rbr211lrfpckmj11kxsginfcwwid4hfdn4k9")
+        (libre-hash "1281d0rx17yiy9723ig381jq3bww59xqggisbxhdrxvfbxv0vvp4"))
     (make-linux-libre-source version
                              (%upstream-linux-source version hash)
+                             (%upstream-linux-libre-source version libre-hash)
                              deblob-scripts-4.19)))
 
 (define-public linux-libre-4.14-version "4.14.195")
 (define-public linux-libre-4.14-pristine-source
   (let ((version linux-libre-4.14-version)
-        (hash (base32 "08d08la3h48fbdlr3h8zbvdghydx3x9cwb4yrnm0n93hhrwjhkrr")))
+        (hash "08d08la3h48fbdlr3h8zbvdghydx3x9cwb4yrnm0n93hhrwjhkrr")
+        (libre-hash "0vgfw8jv3mnn6d9pvccqvx4v143ck02inivnhmxylq0nqfxb7nj4"))
     (make-linux-libre-source version
                              (%upstream-linux-source version hash)
+                             (%upstream-linux-libre-source version libre-hash)
                              deblob-scripts-4.14)))
 
 (define-public linux-libre-4.9-version "4.9.234")
 (define-public linux-libre-4.9-pristine-source
   (let ((version linux-libre-4.9-version)
-        (hash (base32 "1qw26x2qc29yr094c7scw68m9yz4j0b2c4f92rvi3s31s928avvm")))
+        (hash "1qw26x2qc29yr094c7scw68m9yz4j0b2c4f92rvi3s31s928avvm")
+        (libre-hash "1p7dpsqad9vra22r00ha6vg2fap4jjplfkcaskz9fvih6m4m7wgp"))
     (make-linux-libre-source version
                              (%upstream-linux-source version hash)
+                             (%upstream-linux-libre-source version libre-hash)
                              deblob-scripts-4.9)))
 
 (define-public linux-libre-4.4-version "4.4.234")
 (define-public linux-libre-4.4-pristine-source
   (let ((version linux-libre-4.4-version)
-        (hash (base32 "123354h05fip161rzlxc8h0cn5lh0d1gz06gc5b7zyz9i2lxv539")))
+        (hash "123354h05fip161rzlxc8h0cn5lh0d1gz06gc5b7zyz9i2lxv539")
+        (libre-hash "07adliis6kln7531jwwl0h2v9wkzn2j3jn2zjlyashxd9p85kywm"))
     (make-linux-libre-source version
                              (%upstream-linux-source version hash)
+                             (%upstream-linux-libre-source version libre-hash)
                              deblob-scripts-4.4)))
 
 (define %boot-logo-patch
-- 
2.27.0