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-rw-r--r--guix/build-system/python.scm11
1 files changed, 10 insertions, 1 deletions
diff --git a/guix/build-system/python.scm b/guix/build-system/python.scm
index aeb04c83a4..2532210a49 100644
--- a/guix/build-system/python.scm
+++ b/guix/build-system/python.scm
@@ -31,7 +31,8 @@
   #:export (%python-build-system-modules
             package-with-python2
             python-build
-            python-build-system))
+            python-build-system
+            pypi-uri))
 
 ;; Commentary:
 ;;
@@ -40,6 +41,13 @@
 ;;
 ;; Code:
 
+(define (pypi-uri name version)
+  "Return a URI string for the Python package hosted on the Python Package
+Index (PyPI) corresponding to NAME and VERSION."
+  (string-append "https://pypi.python.org/packages/source/"
+                 (string-take name 1) "/" name "/"
+                 name "-" version ".tar.gz"))
+
 (define %python-build-system-modules
   ;; Build-side modules imported by default.
   `((guix build python-build-system)
@@ -84,6 +92,7 @@ NEW-PREFIX; otherwise, NEW-PREFIX is prepended to the name."
          (if (eq? (package-build-system p) python-build-system)
              (package
                (inherit p)
+               (location (package-location p))
                (name (let ((name (package-name p)))
                        (string-append new-prefix
                                       (if (string-prefix? old-prefix name)