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git-download: Fetch only the required commit, if possible.

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* guix/build/git.scm (git-fetch): Fetch only the required commit, if possible.
This commit is contained in:
Danny Milosavljevic 2018-02-14 00:54:01 +01:00
parent 48c8622010
commit 329dabe13b
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1 changed files with 23 additions and 20 deletions
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15
guix/build/git.scm
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@ -37,13 +37,16 @@ (define* (git-fetch url commit directory
;; in advance anyway. ;; in advance anyway.
(setenv "GIT_SSL_NO_VERIFY" "true") (setenv "GIT_SSL_NO_VERIFY" "true")
;; We cannot use "git clone --recursive" since the following "git checkout" (mkdir-p directory)
;; effectively removes sub-module checkouts as of Git 2.6.3.
(and (zero? (system* git-command "clone" url directory))
(with-directory-excursion directory (with-directory-excursion directory
(system* git-command "tag" "-l") (invoke git-command "init")
(and (zero? (system* git-command "checkout" commit)) (invoke git-command "remote" "add" "origin" url)
(if (zero? (system* git-command "fetch" "--depth" "1" "origin" commit))
(invoke git-command "checkout" "FETCH_HEAD")
(begin (begin
(invoke git-command "fetch" "origin")
(invoke git-command "checkout" commit)))
(when recursive? (when recursive?
;; Now is the time to fetch sub-modules. ;; Now is the time to fetch sub-modules.
(unless (zero? (system* git-command "submodule" "update" (unless (zero? (system* git-command "submodule" "update"
@ -59,6 +62,6 @@ (define* (git-fetch url commit directory
;; status of the Git repo. Since we want a fixed output, this ;; status of the Git repo. Since we want a fixed output, this
;; directory needs to be taken out. ;; directory needs to be taken out.
(delete-file-recursively ".git") (delete-file-recursively ".git")
#t))))) #t))
;;; git.scm ends here ;;; git.scm ends here