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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 (default-python2)
"Return the default Python 2 package."
(let ((python (resolve-interface '(gnu packages python))))
(module-ref python 'python-2)))
(define-public (package-with-python2 p)
"Create a package with the same fields as P, which is assumed to use
PYTHON-BUILD-SYSTEM and to be compiled with the default python, such that
it is compiled with python 2 instead. The name of P is prefixed with
\"python2-\"; a potential existing prefix \"python-\" is dropped."
(let ((rewrite (lambda (x)
;; procedure taking a two-element list ("name" package)
;; and returning a two element list
;; ("name" (package-with-python2 package))
(let ((name (car x))
(content (car (cdr x))))
(list name
(if (package? content)
(package-with-python2 content)
content)))))
(build-system (package-build-system p)))
(package (inherit p)
(name
(let ((name (package-name p)))
(if (eq? build-system python-build-system)
(string-append "python2-"
(if (string-prefix? "python-" name)
(substring name 7)
name))
name)))
(arguments
(let ((arguments (package-arguments p))
(python2 (default-python2)))
(if (eq? build-system python-build-system)
(if (member #:python arguments)
(substitute-keyword-arguments arguments ((#:python p) python2))
(append arguments `(#:python ,python2)))
arguments)))
(inputs
(let ((inputs (package-inputs p)))
(if (null? inputs)
'()
(map rewrite inputs))))
(native-inputs
(let ((native-inputs (package-native-inputs p)))
(if (null? native-inputs)
'()
(map rewrite native-inputs)))))))
(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
|