* guix/build/python-build-system.scm (add-installed-pythonpath,
site-packages): New exported procedures.
---
guix/build/python-build-system.scm | 22 +++++++++++++++++++++-
1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/guix/build/python-build-system.scm
b/guix/build/python-build-system.scm
index 038fa97..1950b3b 100644
--- a/guix/build/python-build-system.scm
+++ b/guix/build/python-build-system.scm
@@ -28,7 +28,9 @@
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:export (%standard-phases
- python-build))
+ python-build
+ add-installed-pythonpath
+ site-packages))
;; Commentary:
;;
@@ -74,6 +76,24 @@
(major+minor (take components 2)))
(string-join major+minor ".")))
+(define (site-packages outputs inputs)
+ "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 outputs inputs)
+ "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 outputs inputs)))
+ (setenv "PYTHONPATH"
+ (string-append add-path
+ (if old-path (string-append ":" old-path) "")))
+ #t))
+
(define* (install #:key outputs inputs (configure-flags '()) use-setuptools?
#:allow-other-keys)
"Install a given Python package."
--
2.7.4
