htgoebel pushed a commit to branch wip-python-build-system in repository guix.
commit 5e44a32726c61b4c8fd867afb5aefc3bc55b8fa4 Author: Hartmut Goebel <[email protected]> Date: Sat Oct 8 12:04:20 2016 +0200 guix: python-build-system: Add helpers for getting and setting PYTHONPATH. * guix/build/python-build-system.scm (add-installed-pythonpath, site-packages): New exported procedures. --- guix/build/python-build-system.scm | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/guix/build/python-build-system.scm b/guix/build/python-build-system.scm index ee40645..a4e8038 100644 --- a/guix/build/python-build-system.scm +++ b/guix/build/python-build-system.scm @@ -28,6 +28,8 @@ #:use-module (srfi srfi-1) #:use-module (srfi srfi-26) #:export (%standard-phases + add-installed-pythonpath + site-packages python-build)) ;; Commentary: @@ -74,6 +76,24 @@ (major+minor (take components 2))) (string-join major+minor "."))) +(define (site-packages inputs outputs) + "Return the path of the current output's Python site-package." + (let* ((out (assoc-ref outputs "out")) + (python (assoc-ref inputs "python"))) + (string-append out "/lib/python" + (get-python-version python) + "/site-packages/"))) + +(define (add-installed-pythonpath inputs outputs) + "Prepend the Python site-package of OUTPUT to PYTHONPATH. This is useful +when running checks after installing the package." + (let ((old-path (getenv "PYTHONPATH")) + (add-path (site-packages inputs outputs))) + (setenv "PYTHONPATH" + (string-append add-path + (if old-path (string-append ":" old-path) ""))) + #t)) + (define* (install #:key outputs (configure-flags '()) use-setuptools? #:allow-other-keys) "Install a given Python package."
