guix-play/guix/build-system/python.scm
Andreas Enge 3df47231e6 guix: python: Switch to python-wrapper as the default version for the python
build system (switches to Python 3) and compute python-version instead of
  passing it as a parameter.

* guix/build-system/python.scm (default-python): Switch to python-wrapper.
* guix/build-system/python.scm (python-build): Drop parameter #:python-version.
* guix/build/python-build-system.scm (wrap): Compute python version from input.
2013-09-04 18:07:55 +02:00

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;;; 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 (default-python)
"Return the default Python package."
;; Lazily resolve the binding to avoid a circular dependency.
(let ((python (resolve-interface '(gnu packages python))))
(module-ref python 'python-wrapper)))
(define* (python-build store name source inputs
#:key
(python (default-python))
(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
#: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