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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2018 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2018 Björn Höfling <bjoern.hoefling@bjoernhoefling.de>
;;;
;;; 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."
(invoke hg-command
"clone" url
"--rev" changeset
;; Disable TLS certificate verification. The hash of
;; the checkout is known in advance anyway.
"--insecure"
directory)
;; 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.
;; Since the '.hg' file is also in sub-modules, we have to
;; search for it in all sub-directories.
(for-each delete-file-recursively
(find-files directory "^\\.hg$" #:directories? #t))
#t)
;;; hg.scm ends here
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