12/28: gnu: python-3.9: Add a search path specification for PYTHONTZPATH.

[guix-commits]

apteryx pushed a commit to branch core-updates
in repository guix.

commit 5f20a347450b620f1c582b16aa007f8c2feea13f
Author: Maxim Cournoyer <maxim.cournoyer@gmail.com>
AuthorDate: Fri Jan 15 00:07:46 2021 -0500

    gnu: python-3.9: Add a search path specification for PYTHONTZPATH.
    
    Python 3.9 implemented PEP 615 
(<)https://www.python.org/dev/peps/pep-0615/>),
    which relies on either a compiled time default value or the PYTHONTZPATH
    environment variable to find the system tzdata database.
    
    * gnu/packages/python.scm (python-3.9)[native-search-paths]: Add a new 
search
    path specification for PYTHONTZPATH.
---
 gnu/packages/python.scm | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/python.scm b/gnu/packages/python.scm
index 85eb797..d3df1a4 100644
--- a/gnu/packages/python.scm
+++ b/gnu/packages/python.scm
@@ -475,7 +475,12 @@ data types.")
             (variable "PYTHONPATH")
             (files (list (string-append "lib/python"
                                         (version-major+minor version)
-                                        "/site-packages"))))))))
+                                        "/site-packages"))))
+           ;; Used to locate tzdata by the zoneinfo module introduced in
+           ;; Python 3.9.
+           (search-path-specification
+            (variable "PYTHONTZPATH")
+            (files (list "share/zoneinfo")))))))
 
 ;; Current 3.x version.
 (define-public python-3 python-3.9)