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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (guix git-download)
#:use-module (guix gexp)
#:use-module (guix monads)
#:use-module (guix records)
#:use-module (guix packages)
#:autoload (guix build-system gnu) (standard-inputs)
#:use-module (ice-9 match)
#:export (git-reference
git-reference?
git-reference-url
git-reference-commit
git-reference-recursive?
git-fetch))
;;; Commentary:
;;;
;;; An <origin> method that fetches a specific commit from a Git repository.
;;; The repository URL and commit hash are specified with a <git-reference>
;;; object.
;;;
;;; Code:
(define-record-type* <git-reference>
git-reference make-git-reference
git-reference?
(url git-reference-url)
(commit git-reference-commit)
(recursive? git-reference-recursive? ; whether to recurse into sub-modules
(default #f)))
(define (git-package)
"Return the default Git package."
(let ((distro (resolve-interface '(gnu packages version-control))))
(module-ref distro 'git)))
(define* (git-fetch store ref hash-algo hash
#:optional name
#:key (system (%current-system)) guile
(git (git-package)))
"Return a fixed-output derivation in STORE that fetches REF, a
<git-reference> 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 guile-for-build
(match guile
((? package?)
(package-derivation store guile system))
(#f ; the default
(let* ((distro (resolve-interface '(gnu packages commencement)))
(guile (module-ref distro 'guile-final)))
(package-derivation store guile system)))))
(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-inputs (%current-system))
'()))
(define build
#~(begin
(use-modules (guix build git)
(guix build utils)
(ice-9 match))
;; The 'git submodule' commands expects Coreutils, sed,
;; grep, etc. to be in $PATH.
(set-path-environment-variable "PATH" '("bin")
(match '#$inputs
(((names dirs) ...)
dirs)))
(git-fetch '#$(git-reference-url ref)
'#$(git-reference-commit ref)
#$output
#:recursive? '#$(git-reference-recursive? ref)
#:git-command (string-append #$git "/bin/git"))))
(run-with-store store
(gexp->derivation (or name "git-checkout") build
#:system system
#:local-build? #t
#:hash-algo hash-algo
#:hash hash
#:recursive? #t
#:modules '((guix build git)
(guix build utils))
#:guile-for-build guile-for-build
#:local-build? #t)
#:guile-for-build guile-for-build
#:system system))
;;; git-download.scm ends here
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