mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-12-29 07:42:23 -05:00
223cc96e5b
Fixes <https://issues.guix.gnu.org/52269>. * gnu/packages/aux-files/python/sitecustomize.py: Use site.addsitedirs to add the site directories; this takes care of the .pth files. Make sure the added items still appear before Python's own 'site-packages' directory.
65 lines
2.5 KiB
Python
65 lines
2.5 KiB
Python
# -*- coding: utf-8 -*-
|
|
# GNU Guix --- Functional package management for GNU
|
|
# Copyright © 2021 Maxim Cournoyer <maxim.cournoyer@gmail.com>
|
|
#
|
|
# This file is part of GNU Guix.
|
|
#
|
|
# GNU Guix is free software; you can redistribute it and/or modify it
|
|
# under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 3 of the License, or (at
|
|
# your option) any later version.
|
|
#
|
|
# GNU Guix is distributed in the hope that it will be useful, but
|
|
# WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
import os
|
|
import site
|
|
import sys
|
|
|
|
# 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(os.path.pathsep)
|
|
except KeyError:
|
|
all_sites_raw = []
|
|
# Normalize paths, otherwise a trailing slash would cause it to not match.
|
|
all_sites_norm = [os.path.normpath(p) for p in all_sites_raw]
|
|
matching_sites = [p for p in all_sites_norm
|
|
if p.endswith(site_packages_prefix)]
|
|
|
|
if matching_sites:
|
|
# Deduplicate the entries, append them to sys.path, and handle any
|
|
# .pth files they contain.
|
|
for s in matching_sites:
|
|
site.addsitedir(s)
|
|
|
|
# Move the entries that were appended to sys.path in front of
|
|
# Python's own site-packages directory. This enables Guix
|
|
# packages to override Python's bundled packages, such as 'pip'.
|
|
python_site_index = sys.path.index(python_site)
|
|
new_site_start_index = sys.path.index(matching_sites[0])
|
|
if python_site_index < new_site_start_index:
|
|
sys.path = (sys.path[:python_site_index]
|
|
+ sys.path[new_site_start_index:]
|
|
+ sys.path[python_site_index:new_site_start_index])
|