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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2013 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/>.
+
+;;;
+;;; This file defines build jobs of Guix itself for the Hydra continuation
+;;; integration tool.
+;;;
+
+;; Attempt to use our very own Guix modules.
+(eval-when (compile load eval)
+
+ ;; Ignore any available .go, and force recompilation. This is because our
+ ;; checkout in the store has mtime set to the epoch, and thus .go files look
+ ;; newer, even though they may not correspond.
+ (set! %fresh-auto-compile #t)
+
+ (and=> (assoc-ref (current-source-location) 'filename)
+ (lambda (file)
+ (let ((dir (string-append (dirname file) "/../..")))
+ (format (current-error-port) "prepending ~s to the load path~%"
+ dir)
+ (set! %load-path (cons dir %load-path))))))
+
+
+(use-modules (guix store)
+ (guix packages)
+ (guix utils)
+ (guix build-system gnu)
+ (gnu packages package-management)
+ (srfi srfi-1)
+ (ice-9 match))
+
+;; XXX: Debugging hack: since `hydra-eval-guile-jobs' redirects the output
+;; port to the bit bucket, let us write to the error port instead.
+(setvbuf (current-error-port) _IOLBF)
+(set-current-output-port (current-error-port))
+
+(define* (package->alist store package system
+ #:optional (package-derivation package-derivation))
+ "Convert PACKAGE to an alist suitable for Hydra."
+ `((derivation . ,(package-derivation store package system))
+ (description . ,(package-synopsis package))
+ (long-description . ,(package-description package))
+ (license . ,(package-license package))
+ (home-page . ,(package-home-page package))
+ (maintainers . ("bug-guix@gnu.org"))))
+
+(define (tarball-package checkout)
+ "Return a package that does `make distcheck' from CHECKOUT, a directory
+containing a Git checkout of Guix."
+ (let ((dist (dist-package guix checkout)))
+ (package (inherit dist)
+ (location (source-properties->location (current-source-location)))
+ (arguments (substitute-keyword-arguments (package-arguments dist)
+ ((#:phases p)
+ `(alist-cons-before
+ 'autoreconf 'patch-bootstrap-script
+ (lambda _
+ ;; Comment out `git' invocations, since Hydra provides
+ ;; us with a checkout that includes sub-modules.
+ (substitute* "bootstrap"
+ (("git submodule init")
+ "true\n")))
+ ,p)))))))
+
+(define (hydra-jobs store arguments)
+ "Return Hydra jobs."
+ (define systems
+ (match (filter-map (match-lambda
+ (('system . value)
+ value)
+ (_ #f))
+ arguments)
+ ((lst ..1)
+ lst)
+ (_
+ (list (%current-system)))))
+
+ (define checkout
+ (assq-ref arguments 'guix))
+
+ `((tarball . ,(package->alist store (tarball-package checkout)
+ (%current-system)))))