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git: Add ssh authentication support.

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If Guile-Git revision is >= 0.3.0, use SSH agent authentication method for
both clone and fetch calls.

* guix/git.scm (auth-supported?): New variable,
(clone*): set auth-method to ssh-agent if the variable above is true,
(update-cached-checkout): ditto.
This commit is contained in:
Mathieu Othacehe 2020-02-03 18:05:02 +01:00
parent 8d9317e1f0
commit c357474994
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1 changed files with 19 additions and 4 deletions
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23
guix/git.scm
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@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
;;; Copyright © 2017, 2020 Mathieu Othacehe <m.othacehe@gmail.com>
;;; Copyright © 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
@ -108,6 +108,10 @@ (define* (url-cache-directory url
(string-append "R:" url)
url))))))
;; Authentication appeared in Guile-Git 0.3.0, check if it is available.
(define auth-supported?
(false-if-exception (resolve-interface '(git auth))))
(define (clone* url directory)
"Clone git repository at URL into DIRECTORY. Upon failure,
make sure no empty directory is left behind."
@ -119,7 +123,13 @@ (define (clone* url directory)
;; value in Guile-Git: <https://bugs.gnu.org/29238>.
(if (module-defined? (resolve-interface '(git))
'clone-init-options)
(clone url directory (clone-init-options))
(let ((auth-method (and auth-supported?
(%make-auth-ssh-agent))))
(clone url directory
(if auth-supported?
(make-clone-options
#:fetch-options (make-fetch-options auth-method))
(clone-init-options))))
(clone url directory)))
(lambda _
(false-if-exception (rmdir directory)))))
@ -276,12 +286,17 @@ (define canonical-ref
(with-libgit2
(let* ((cache-exists? (openable-repository? cache-directory))
(repository (if cache-exists?
(repository-open cache-directory)
(repository-open (pk cache-directory))
(clone* url cache-directory))))
;; Only fetch remote if it has not been cloned just before.
(when (and cache-exists?
(not (reference-available? repository ref)))
(remote-fetch (remote-lookup repository "origin")))
(if auth-supported?
(let ((auth-method (and auth-supported?
(%make-auth-ssh-agent))))
(remote-fetch (remote-lookup repository "origin")
#:fetch-options (make-fetch-options auth-method)))
(remote-fetch (remote-lookup repository "origin"))))
(when recursive?
(update-submodules repository #:log-port log-port))
(let ((oid (switch-to-ref repository canonical-ref)))