# -*- 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.normpath(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])
m?id=a1dc5ac832a106d46450961e78e7db3f83bf2bff&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2024-08-31 10:42:23 +0200'>2024-08-31</span></td><td><a href='/guix/commit/gnu/packages/ratpoison.scm?id=ea67ccbf57a0b6e3e7f84b631b9181ae502e7b20'>gnu: ratpoison: Import the correct set of modules.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/ratpoison.scm (ratpoison) [arguments]
&lt;modules&gt;: Replace %default-gnu-imported-modules with %default-gnu-modules.

Change-Id: I75acbee62734233a0f037837ecf83fa0ec1bc8f5
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2024-08-31 10:42:16 +0200'>2024-08-31</span></td><td><a href='/guix/commit/gnu/packages/ratpoison.scm?id=f59df1aa3c104aabff3291f6b8b155fb01aebc06'>build-systems: gnu: Export %default-gnu-imported-modules and %default-gnu-mod...</a><span class='msg-avail'>...<span class='msg-tooltip'>Until now users would have to cargo cult or inspect the private
%default-modules variable of (guix build-systems gnu) to discover which
modules to include when extending the used modules via the #:modules argument.

The renaming was automated via the command:

  $ git grep -l %gnu-build-system-modules
    | xargs sed 's/%gnu-build-system-modules/%default-gnu-imported-modules/' -i

* guix/build-system/gnu.scm (%gnu-build-system-modules): Rename to...
(%default-gnu-imported-modules): ... this.
(%default-modules): Rename to...
(%default-gnu-modules): ... this.  Export.
(dist-package, gnu-build, gnu-cross-build): Adjust accordingly.

Change-Id: Idef307fff13cb76f3182d782b26e1cd3a5c757ee
</span></span></td><td>Maxim Cournoyer</td></tr>