9b5b5c1740
* guix/git-download.scm, guix/build/git.scm: New files. * Makefile.am (MODULES): Add them. * guix/packages.scm (<origin>): Fix comment for 'method' field.
46 lines
1.8 KiB
Scheme
46 lines
1.8 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2014 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (guix build git)
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#:use-module (guix build utils)
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#:export (git-fetch))
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;;; Commentary:
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;;;
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;;; This is the build-side support code of (guix git-download). It allows a
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;;; Git repository to be cloned and checked out at a specific commit.
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;;;
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;;; Code:
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(define* (git-fetch url commit directory
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#:key (git-command "git"))
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"Fetch COMMIT from URL into DIRECTORY. COMMIT must be a valid Git commit
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identifier. Return #t on success, #f otherwise."
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(and (zero? (system* git-command "clone" url directory))
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(with-directory-excursion directory
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(system* git-command "tag" "-l")
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(and (zero? (system* git-command "checkout" commit))
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(begin
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;; The contents of '.git' vary as a function of the current
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;; status of the Git repo. Since we want a fixed output, this
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;; directory needs to be taken out.
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(delete-file-recursively ".git")
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#t)))))
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;;; git.scm ends here
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