;;; 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