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authorRicardo Wurmus <ricardo.wurmus@mdc-berlin.de>2016-06-15 10:38:10 +0200
committerRicardo Wurmus <rekado@elephly.net>2016-06-15 17:02:18 +0200
commitc4e48b68bdf41e7f6805473fc4f545b215251c6d (patch)
tree9770d6e6dc0e6f1c9a7ef172a74dc6cb7ddc529c /guix
parent9c4a8514d621b6e2a19f56fa9b3396c940b968c5 (diff)
guix: Add downloader for Mercurial repositories.
* guix/build/hg.scm: New file. * guix/hg-download.scm: New file. * Makefile.am (MODULES): Add them.
Diffstat (limited to 'guix')
-rw-r--r--guix/build/hg.scm51
-rw-r--r--guix/hg-download.scm84
2 files changed, 135 insertions, 0 deletions
diff --git a/guix/build/hg.scm b/guix/build/hg.scm
new file mode 100644
index 0000000000..ae4574de57
--- /dev/null
+++ b/guix/build/hg.scm
@@ -0,0 +1,51 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2016 Ricardo Wurmus <rekado@elephly.net>
+;;;
+;;; 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 build hg)
+ #:use-module (guix build utils)
+ #:export (hg-fetch))
+
+;;; Commentary:
+;;;
+;;; This is the build-side support code of (guix hg-download). It allows a
+;;; Mercurial repository to be cloned and checked out at a specific changeset
+;;; identifier.
+;;;
+;;; Code:
+
+(define* (hg-fetch url changeset directory
+ #:key (hg-command "hg"))
+ "Fetch CHANGESET from URL into DIRECTORY. CHANGESET must be a valid
+Mercurial changeset identifier. Return #t on success, #f otherwise."
+
+ (and (zero? (system* hg-command
+ "clone" url
+ "--rev" changeset
+ ;; Disable TLS certificate verification. The hash of
+ ;; the checkout is known in advance anyway.
+ "--insecure"
+ directory))
+ (with-directory-excursion directory
+ (begin
+ ;; The contents of '.hg' vary as a function of the current
+ ;; status of the Mercurial repo. Since we want a fixed
+ ;; output, this directory needs to be taken out.
+ (delete-file-recursively ".hg")
+ #t))))
+
+;;; hg.scm ends here
diff --git a/guix/hg-download.scm b/guix/hg-download.scm
new file mode 100644
index 0000000000..f3e1d2906a
--- /dev/null
+++ b/guix/hg-download.scm
@@ -0,0 +1,84 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2014, 2015 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2016 Ricardo Wurmus <rekado@elephly.net>
+;;;
+;;; 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 hg-download)
+ #:use-module (guix gexp)
+ #:use-module (guix store)
+ #:use-module (guix monads)
+ #:use-module (guix records)
+ #:use-module (guix packages)
+ #:autoload (guix build-system gnu) (standard-packages)
+ #:use-module (ice-9 match)
+ #:export (hg-reference
+ hg-reference?
+ hg-reference-url
+ hg-reference-changeset
+ hg-reference-recursive?
+
+ hg-fetch))
+
+;;; Commentary:
+;;;
+;;; An <origin> method that fetches a specific changeset from a Mercurial
+;;; repository. The repository URL and changeset ID are specified with a
+;;; <hg-reference> object.
+;;;
+;;; Code:
+
+(define-record-type* <hg-reference>
+ hg-reference make-hg-reference
+ hg-reference?
+ (url hg-reference-url)
+ (changeset hg-reference-changeset))
+
+(define (hg-package)
+ "Return the default Mercurial package."
+ (let ((distro (resolve-interface '(gnu packages version-control))))
+ (module-ref distro 'mercurial)))
+
+(define* (hg-fetch ref hash-algo hash
+ #:optional name
+ #:key (system (%current-system)) (guile (default-guile))
+ (hg (hg-package)))
+ "Return a fixed-output derivation that fetches REF, a <hg-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 build
+ #~(begin
+ (use-modules (guix build hg)
+ (guix build utils)
+ (ice-9 match))
+
+ (hg-fetch '#$(hg-reference-url ref)
+ '#$(hg-reference-changeset ref)
+ #$output
+ #:hg-command (string-append #+hg "/bin/hg"))))
+
+ (mlet %store-monad ((guile (package->derivation guile system)))
+ (gexp->derivation (or name "hg-checkout") build
+ #:system system
+ #:local-build? #t ;don't offload repo cloning
+ #:hash-algo hash-algo
+ #:hash hash
+ #:recursive? #t
+ #:modules '((guix build hg)
+ (guix build utils))
+ #:guile-for-build guile)))
+
+;;; hg-download.scm ends here