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guix: Add downloader for Mercurial repositories.
guix: Add downloader for Mercurial repositories.
* guix/build/hg.scm: New file. * guix/hg-download.scm: New file. * Makefile.am (MODULES): Add them.version-0.11.0

committed by
Ricardo Wurmus

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3 changed files with 137 additions and 0 deletions
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;;; GNU Guix --- Functional package management for GNU |
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;;; Copyright © 2016 Ricardo Wurmus <rekado@elephly.net> |
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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 hg) |
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#:use-module (guix build utils) |
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#:export (hg-fetch)) |
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;;; Commentary: |
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;;; |
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;;; This is the build-side support code of (guix hg-download). It allows a |
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;;; Mercurial repository to be cloned and checked out at a specific changeset |
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;;; identifier. |
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;;; |
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;;; Code: |
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(define* (hg-fetch url changeset directory |
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#:key (hg-command "hg")) |
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"Fetch CHANGESET from URL into DIRECTORY. CHANGESET must be a valid |
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Mercurial changeset identifier. Return #t on success, #f otherwise." |
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(and (zero? (system* hg-command |
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"clone" url |
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"--rev" changeset |
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;; Disable TLS certificate verification. The hash of |
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;; the checkout is known in advance anyway. |
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"--insecure" |
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directory)) |
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(with-directory-excursion directory |
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(begin |
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;; The contents of '.hg' vary as a function of the current |
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;; status of the Mercurial repo. Since we want a fixed |
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;; output, this directory needs to be taken out. |
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(delete-file-recursively ".hg") |
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#t)))) |
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;;; hg.scm ends here |
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;;; GNU Guix --- Functional package management for GNU |
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;;; Copyright © 2014, 2015 Ludovic Courtès <ludo@gnu.org> |
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;;; Copyright © 2016 Ricardo Wurmus <rekado@elephly.net> |
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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 hg-download) |
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#:use-module (guix gexp) |
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#:use-module (guix store) |
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#:use-module (guix monads) |
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#:use-module (guix records) |
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#:use-module (guix packages) |
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#:autoload (guix build-system gnu) (standard-packages) |
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#:use-module (ice-9 match) |
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#:export (hg-reference |
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hg-reference? |
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hg-reference-url |
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hg-reference-changeset |
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hg-reference-recursive? |
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hg-fetch)) |
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;;; Commentary: |
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;;; |
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;;; An <origin> method that fetches a specific changeset from a Mercurial |
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;;; repository. The repository URL and changeset ID are specified with a |
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;;; <hg-reference> object. |
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;;; |
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;;; Code: |
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(define-record-type* <hg-reference> |
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hg-reference make-hg-reference |
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hg-reference? |
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(url hg-reference-url) |
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(changeset hg-reference-changeset)) |
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(define (hg-package) |
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"Return the default Mercurial package." |
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(let ((distro (resolve-interface '(gnu packages version-control)))) |
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(module-ref distro 'mercurial))) |
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(define* (hg-fetch ref hash-algo hash |
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#:optional name |
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#:key (system (%current-system)) (guile (default-guile)) |
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(hg (hg-package))) |
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"Return a fixed-output derivation that fetches REF, a <hg-reference> |
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object. The output is expected to have recursive hash HASH of type |
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HASH-ALGO (a symbol). Use NAME as the file name, or a generic name if #f." |
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(define build |
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#~(begin |
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(use-modules (guix build hg) |
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(guix build utils) |
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(ice-9 match)) |
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(hg-fetch '#$(hg-reference-url ref) |
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'#$(hg-reference-changeset ref) |
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#$output |
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#:hg-command (string-append #+hg "/bin/hg")))) |
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(mlet %store-monad ((guile (package->derivation guile system))) |
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(gexp->derivation (or name "hg-checkout") build |
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#:system system |
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#:local-build? #t ;don't offload repo cloning |
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#:hash-algo hash-algo |
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#:hash hash |
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#:recursive? #t |
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#:modules '((guix build hg) |
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(guix build utils)) |
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#:guile-for-build guile))) |
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;;; hg-download.scm ends here |
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