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89/136: aux-files: sitecustomize: Cleanup and add explanatory comments.
From: |
guix-commits |
Subject: |
89/136: aux-files: sitecustomize: Cleanup and add explanatory comments. |
Date: |
Sun, 17 Oct 2021 05:16:12 -0400 (EDT) |
apteryx pushed a commit to branch core-updates-frozen-batched-changes
in repository guix.
commit 760318fa4f2616e48ecb55d50dfa7fc2320836f2
Author: Maxim Cournoyer <maxim.cournoyer@gmail.com>
AuthorDate: Tue Aug 3 20:41:20 2021 -0400
aux-files: sitecustomize: Cleanup and add explanatory comments.
Fixes <https://issues.guix.gnu.org/50105>.
* gnu/packages/aux-files/python/sitecustomize.py: Add a comment explaining
the
general idea, and use sys.prefix instead of sys.executable.
(major_minor): Use the unpacking operator (*) to provide the arguments.
(site_packages_prefix): Use os.path.join to form the path.
(python_site): Likewise. Use sys.prefix instead of sys.executable.
(all_sites_raw): Split on os.path.pathsep.
(sys.path): Directly splice the result in the list.
Suggested-by: Hartmut Goebel <h.goebel@crazy-compilers.com>
Reported-by: Mathieu Othacehe <othacehe@gnu.org>
Signed-off-by: Maxim Cournoyer <maxim.cournoyer@gmail.com>
---
gnu/packages/aux-files/python/sitecustomize.py | 28 +++++++++++++++++++-------
1 file changed, 21 insertions(+), 7 deletions(-)
diff --git a/gnu/packages/aux-files/python/sitecustomize.py
b/gnu/packages/aux-files/python/sitecustomize.py
index 65d3c7d..71e328b 100644
--- a/gnu/packages/aux-files/python/sitecustomize.py
+++ b/gnu/packages/aux-files/python/sitecustomize.py
@@ -20,13 +20,26 @@
import os
import sys
-python_root = os.path.realpath(sys.executable).split('/bin/')[0]
-major_minor = '{}.{}'.format(sys.version_info[0], sys.version_info[1])
-site_packages_prefix = 'lib/python' + major_minor + '/site-packages'
-python_site = python_root + '/' + site_packages_prefix
+# Commentary:
+#
+# Site-specific customization for Guix.
+#
+# The program below honors the GUIX_PYTHONPATH environment variable to
+# discover Python packages. File names appearing in this variable that match
+# a predefined versioned installation prefix are added to the sys.path. To be
+# considered, a Python package must be installed under the
+# 'lib/pythonX.Y/site-packages' directory, where X and Y are the major and
+# minor version numbers of the Python interpreter.
+#
+# Code:
+
+major_minor = '{}.{}'.format(*sys.version_info)
+site_packages_prefix = os.path.join(
+ 'lib', 'python' + major_minor, 'site-packages')
+python_site = os.path.join(sys.prefix, site_packages_prefix)
try:
- all_sites_raw = os.environ['GUIX_PYTHONPATH'].split(':')
+ all_sites_raw = os.environ['GUIX_PYTHONPATH'].split(os.path.pathsep)
except KeyError:
all_sites_raw = []
# Normalize paths, otherwise a trailing slash would cause it to not match.
@@ -35,7 +48,8 @@ matching_sites = [p for p in all_sites_norm
if p.endswith(site_packages_prefix)]
# Insert sites matching the current version into sys.path, right before
-# Python's own site.
+# Python's own site. This way, the user can override the libraries provided
+# by Python itself.
sys_path_absolute = [os.path.realpath(p) for p in sys.path]
index = sys_path_absolute.index(python_site)
-sys.path = sys.path[:index] + matching_sites + sys.path[index:]
+sys.path[index:index] = matching_sites
- 57/136: gnu: Add a missing copyright., (continued)
- 57/136: gnu: Add a missing copyright., guix-commits, 2021/10/17
- 58/136: gnu: polkit: Update to 0.120 and ungraft., guix-commits, 2021/10/17
- 45/136: gnu: gst-plugins-ugly: Update to 1.19.2., guix-commits, 2021/10/17
- 55/136: gnu: abseil-cpp: Update to 20210324.2., guix-commits, 2021/10/17
- 71/136: gnu: dbus-c++: Fix build., guix-commits, 2021/10/17
- 73/136: bluez: Update to 5.61., guix-commits, 2021/10/17
- 77/136: gnu: tzdata: Update to 2021c., guix-commits, 2021/10/17
- 82/136: gnu: curl: Honor #:tests?., guix-commits, 2021/10/17
- 86/136: gnu: gdb: Patch references to /bin/sh and add debug output., guix-commits, 2021/10/17
- 87/136: gnu: gdb: Normalize indentation., guix-commits, 2021/10/17
- 89/136: aux-files: sitecustomize: Cleanup and add explanatory comments.,
guix-commits <=
- 92/136: gnu: rust: Add rust 1.54 and move all non-bootstrapping logic to it., guix-commits, 2021/10/17
- 94/136: gnu: fontconfig: Add a search path for XDG_DATA_DIRS., guix-commits, 2021/10/17
- 95/136: gnu: Move a few Python packages to (gnu packages python-build)., guix-commits, 2021/10/17
- 64/136: gnu: gst-plugins-ugly: Update to 1.18.5., guix-commits, 2021/10/17
- 70/136: gnu: python-keras: Enable parallel tests., guix-commits, 2021/10/17
- 98/136: gnu: Add python-tomli., guix-commits, 2021/10/17
- 111/136: gnu: colord-minimal: Introduce minimal variant., guix-commits, 2021/10/17
- 118/136: gnu: cmake-bootstrap: Update to 3.21.3., guix-commits, 2021/10/17
- 123/136: gnu: pango: Update to 1.48.10., guix-commits, 2021/10/17
- 125/136: gnu: glib: Update to 2.70, specify a bindir prefix and hide package., guix-commits, 2021/10/17