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git-download: Move fallback code to (guix build git).

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* guix/build/git.scm (git-fetch-with-fallback): New procedure, with code
taken from…
* guix/git-download.scm (git-fetch): … here.
[modules]: Remove modules that are no longer directly used in ‘build’.
[build]: Use ‘git-fetch-with-fallback’.
This commit is contained in:
Ludovic Courtès 2023-09-11 11:26:12 +02:00
parent 7f3ebd6dbc
commit 811b249397
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GPG key ID: 090B11993D9AEBB5
2 changed files with 50 additions and 41 deletions
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44
guix/build/git.scm
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@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU ;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014, 2016, 2019 Ludovic Courtès <ludo@gnu.org> ;;; Copyright © 2014, 2016, 2019, 2023 Ludovic Courtès <ludo@gnu.org>
;;; ;;;
;;; This file is part of GNU Guix. ;;; This file is part of GNU Guix.
;;; ;;;
@ -18,9 +18,12 @@
(define-module (guix build git) (define-module (guix build git)
#:use-module (guix build utils) #:use-module (guix build utils)
#:autoload (guix build download-nar) (download-nar)
#:autoload (guix swh) (%verify-swh-certificate? swh-download)
#:use-module (srfi srfi-34) #:use-module (srfi srfi-34)
#:use-module (ice-9 format) #:use-module (ice-9 format)
#:export (git-fetch)) #:export (git-fetch
git-fetch-with-fallback))
;;; Commentary: ;;; Commentary:
;;; ;;;
@ -76,4 +79,41 @@ recursively. Return #t on success, #f otherwise."
(delete-file-recursively ".git") (delete-file-recursively ".git")
#t))) #t)))
(define* (git-fetch-with-fallback url commit directory
#:key (git-command "git") recursive?)
"Like 'git-fetch', fetch COMMIT from URL into DIRECTORY, but fall back to
alternative methods when fetching from URL fails: attempt to download a nar,
and if that also fails, download from the Software Heritage archive."
(or (git-fetch url commit directory
#:recursive? recursive?
#:git-command git-command)
(download-nar directory)
;; As a last resort, attempt to download from Software Heritage.
;; Disable X.509 certificate verification to avoid depending
;; on nss-certs--we're authenticating the checkout anyway.
;; XXX: Currently recursive checkouts are not supported.
(and (not recursive?)
(parameterize ((%verify-swh-certificate? #f))
(format (current-error-port)
"Trying to download from Software Heritage...~%")
(swh-download url commit directory)
(when (file-exists?
(string-append directory "/.gitattributes"))
;; Perform CR/LF conversion and other changes
;; specificied by '.gitattributes'.
(invoke git-command "-C" directory "init")
(invoke git-command "-C" directory "config" "--local"
"user.email" "you@example.org")
(invoke git-command "-C" directory "config" "--local"
"user.name" "Your Name")
(invoke git-command "-C" directory "add" ".")
(invoke git-command "-C" directory "commit" "-am" "init")
(invoke git-command "-C" directory "read-tree" "--empty")
(invoke git-command "-C" directory "reset" "--hard")
(delete-file-recursively
(string-append directory "/.git")))))))
;;; git.scm ends here ;;; git.scm ends here

47
guix/git-download.scm
View file

@ -116,19 +116,16 @@ HASH-ALGO (a symbol). Use NAME as the file name, or a generic name if #f."
(define modules (define modules
(delete '(guix config) (delete '(guix config)
(source-module-closure '((guix build git) (source-module-closure '((guix build git)
(guix build utils) (guix build utils)))))
(guix build download-nar)
(guix swh)))))
(define build (define build
(with-imported-modules modules (with-imported-modules modules
(with-extensions (list guile-json gnutls ;for (guix swh) (with-extensions (list guile-json gnutls ;for (guix swh)
guile-lzlib) guile-lzlib)
#~(begin #~(begin
(use-modules (guix build git) (use-modules (guix build git)
(guix build utils) ((guix build utils)
(guix build download-nar) #:select (set-path-environment-variable))
(guix swh)
(ice-9 match)) (ice-9 match))
(define recursive? (define recursive?
@ -151,38 +148,10 @@ HASH-ALGO (a symbol). Use NAME as the file name, or a generic name if #f."
(setvbuf (current-output-port) 'line) (setvbuf (current-output-port) 'line)
(setvbuf (current-error-port) 'line) (setvbuf (current-error-port) 'line)
(or (git-fetch (getenv "git url") (getenv "git commit") (git-fetch-with-fallback (getenv "git url") (getenv "git commit")
#$output #$output
#:recursive? recursive? #:recursive? recursive?
#:git-command "git") #:git-command "git")))))
(download-nar #$output)
;; As a last resort, attempt to download from Software Heritage.
;; Disable X.509 certificate verification to avoid depending
;; on nss-certs--we're authenticating the checkout anyway.
;; XXX: Currently recursive checkouts are not supported.
(and (not recursive?)
(parameterize ((%verify-swh-certificate? #f))
(format (current-error-port)
"Trying to download from Software Heritage...~%")
(swh-download (getenv "git url") (getenv "git commit")
#$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))) (mlet %store-monad ((guile (package->derivation guile system)))
(gexp->derivation (or name "git-checkout") build (gexp->derivation (or name "git-checkout") build