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git-download: Apply Git attributes on checkouts coming from SWH.

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Fixes a bug whereby CR/LF conversion, for instance, would not be applied
on Git repositories retrieved from SWH:

  https://sympa.inria.fr/sympa/arc/swh-devel/2023-03/msg00000.html

Reported by Simon Tournier <simon.tournier@inserm.fr>.
Suggested by Valentin Lorentz <valentin.lorentz@inria.fr>.
Co-authored by Simon Tournier <simon.tournier@inserm.fr>.

* guix/git-download.scm (git-fetch)[build]: Add Git operations conditioned by
'.gitattributes' on the result from SWH.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
This commit is contained in:
Ludovic Courtès 2023-03-02 13:05:46 +01:00
parent 4f681cdbc2
commit 58f20fa818
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1 changed files with 31 additions and 12 deletions
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43
guix/git-download.scm
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@ -1,8 +1,9 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2014-2021, 2023 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2017 Mathieu Lirzin <mthl@gnu.org>
;;; Copyright © 2017 Christopher Baines <mail@cbaines.net>
;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net>
;;; Copyright © 2023 Simon Tournier <zimon.toutoune@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
@ -84,16 +85,18 @@
object. The output is expected to have recursive hash HASH of type
HASH-ALGO (a symbol). Use NAME as the file name, or a generic name if #f."
(define inputs
;; When doing 'git clone --recursive', we need sed, grep, etc. to be
;; available so that 'git submodule' works.
(if (git-reference-recursive? ref)
(standard-packages)
`(("git" ,git)
;; The 'swh-download' procedure requires tar and gzip.
`(("gzip" ,(module-ref (resolve-interface '(gnu packages compression))
'gzip))
("tar" ,(module-ref (resolve-interface '(gnu packages base))
'tar)))))
;; When doing 'git clone --recursive', we need sed, grep, etc. to be
;; available so that 'git submodule' works.
,@(if (git-reference-recursive? ref)
(standard-packages)
;; The 'swh-download' procedure requires tar and gzip.
`(("gzip" ,(module-ref (resolve-interface '(gnu packages compression))
'gzip))
("tar" ,(module-ref (resolve-interface '(gnu packages base))
'tar))))))
(define guile-json
(module-ref (resolve-interface '(gnu packages guile)) 'guile-json-4))
@ -151,7 +154,7 @@ HASH-ALGO (a symbol). Use NAME as the file name, or a generic name if #f."
(or (git-fetch (getenv "git url") (getenv "git commit")
#$output
#:recursive? recursive?
#:git-command (string-append #+git "/bin/git"))
#:git-command "git")
(download-nar #$output)
;; As a last resort, attempt to download from Software Heritage.
@ -162,8 +165,24 @@ HASH-ALGO (a symbol). Use NAME as the file name, or a generic name if #f."
(parameterize ((%verify-swh-certificate? #f))
(format (current-error-port)
"Trying to download from Software Heritage...~%")
(swh-download (getenv "git url") (getenv "git commit")
#$output))))))))
#$output)
(when (file-exists?
(string-append #$output "/.gitattributes"))
;; Perform CR/LF conversion and other changes
;; specificied by '.gitattributes'.
(invoke "git" "-C" #$output "init")
(invoke "git" "-C" #$output "config" "--local"
"user.email" "you@example.org")
(invoke "git" "-C" #$output "config" "--local"
"user.name" "Your Name")
(invoke "git" "-C" #$output "add" ".")
(invoke "git" "-C" #$output "commit" "-am" "init")
(invoke "git" "-C" #$output "read-tree" "--empty")
(invoke "git" "-C" #$output "reset" "--hard")
(delete-file-recursively
(string-append #$output "/.git"))))))))))
(mlet %store-monad ((guile (package->derivation guile system)))
(gexp->derivation (or name "git-checkout") build