Add 'python-build-system'.

* guix/build-system/python.scm, guix/build/python-build-system.scm: New files.
* Makefile.am (MODULES): Add them.

1 files changed, 115 insertions, 0 deletions

diff --git a/guix/build-system/python.scm b/guix/build-system/python.scm
new file mode 100644
index 0000000000..2457e1c57d
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+++ b/guix/build-system/python.scm
@@ -0,0 +1,115 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2013 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2013 Nikita Karetnikov <nikita@karetnikov.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/>.
+
+(define-module (guix build-system python)
+  #:use-module (guix store)
+  #:use-module (guix utils)
+  #:use-module (guix packages)
+  #:use-module (guix derivations)
+  #:use-module (guix build-system)
+  #:use-module (guix build-system gnu)
+  #:use-module (ice-9 match)
+  #:export (python-build
+            python-build-system))
+
+;; Commentary:
+;;
+;; Standard build procedure for Python packages using 'setup.py'.  This is
+;; implemented as an extension of 'gnu-build-system'.
+;;
+;; Code:
+
+(define* (python-build store name source inputs
+                       #:key
+                       (python (@ (gnu packages python) python))
+                       (python-version
+                        (string-take (package-version
+                                      (@ (gnu packages python) python)) 3))
+                       (tests? #t)
+                       (configure-flags ''())
+                       (phases '(@ (guix build python-build-system)
+                                   %standard-phases))
+                       (outputs '("out"))
+                       (search-paths '())
+                       (system (%current-system))
+                       (guile #f)
+                       (imported-modules '((guix build python-build-system)
+                                           (guix build gnu-build-system)
+                                           (guix build utils)))
+                       (modules '((guix build python-build-system)
+                                  (guix build gnu-build-system)
+                                  (guix build utils))))
+  "Build SOURCE using PYTHON, and with INPUTS.  This assumes that SOURCE
+provides a 'setup.py' file as its build system."
+  (define python-search-paths
+    (append (package-native-search-paths python)
+            (standard-search-paths)))
+
+  (define builder
+    `(begin
+       (use-modules ,@modules)
+       (python-build #:name ,name
+                     #:source ,(if (and source (derivation-path? source))
+                                   (derivation-path->output-path source)
+                                   source)
+                     #:configure-flags ,configure-flags
+                     #:system ,system
+                     #:test-target "test"
+                     #:tests? ,tests?
+                     #:outputs %outputs
+                     #:python-version ,python-version
+                     #:search-paths ',(map search-path-specification->sexp
+                                           (append python-search-paths
+                                                   search-paths))
+                     #:inputs %build-inputs)))
+
+  (define guile-for-build
+    (match guile
+      ((? package?)
+       (package-derivation store guile system))
+      ((and (? string?) (? derivation-path?))
+       guile)
+      (#f                                         ; the default
+       (let* ((distro (resolve-interface '(gnu packages base)))
+              (guile  (module-ref distro 'guile-final)))
+         (package-derivation store guile system)))))
+
+  (let ((python (package-derivation store python system)))
+    (build-expression->derivation store name system
+                                  builder
+                                  `(,@(if source
+                                          `(("source" ,source))
+                                          '())
+                                    ("python" ,python)
+                                    ,@inputs
+
+                                    ;; Keep the standard inputs of
+                                    ;; 'gnu-build-system'.
+                                    ,@(standard-inputs system))
+
+                                  #:modules imported-modules
+                                  #:outputs outputs
+                                  #:guile-for-build guile-for-build)))
+
+(define python-build-system
+  (build-system (name 'python)
+                (description "The standard Python build system")
+                (build python-build)))
+
+;;; python.scm ends here