# -*- 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])
<th class='left'>Commit message (<a href='/guix/log/tests/guix-build-branch.sh?id=61560d4bef05711db86320794437e1b261f4b5aa'>Collapse</a>)</th><th class='left'>Author</th></tr>
<tr class='logheader'><td><span title='2020-04-04 18:52:36 +0200'>2020-04-04</span></td><td class='logsubject'><a href='/guix/commit/tests/guix-build-branch.sh?id=3cea55078857ecd8ca67fd7cf4eaebb13fb6d9d3'>tests: Adjust '--with-commit' test for tags.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
This is a followup to efa578ecaece67366b4b0e2266de7c2faaa4ae54.

* tests/guix-build-branch.sh: Adjust '--with-commit=guile-gcrypt=v0.1.0'
test to expect the tag ID rather than the commit ID.


</td></tr>
<tr class='logheader'><td><span title='2019-09-04 13:02:27 +0200'>2019-09-04</span></td><td class='logsubject'><a href='/guix/commit/tests/guix-build-branch.sh?id=3c82f1254116be2a9216b7c7e5e8c001ff486270'>tests: Adjust '--with-commit' test.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
This is a followup to 4d04bc50d2df32be326e0f48f378dc581f873989.

* tests/guix-build-branch.sh: Expect "v0.1.0" to lead to
"guile-gcrypt-0.1.0".


</td></tr>
<tr class='logheader'><td><span title='2019-07-26 11:21:36 +0200'>2019-07-26</span></td><td class='logsubject'><a href='/guix/commit/tests/guix-build-branch.sh?id=10a8c2bbc6754bddb0e5d668b3ecc9050efd820b'>git: 'switch-to-ref' resolves tag targets.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* guix/git.scm (switch-to-ref): In the 'tag' case, resolve the target of
the tag.
* tests/guix-build-branch.sh: Adjust test accordingly.


</td></tr>
<tr class='logheader'><td><span title='2019-07-26 11:21:36 +0200'>2019-07-26</span></td><td class='logsubject'><a href='/guix/commit/tests/guix-build-branch.sh?id=177fecb57c0c9e15249bf6a49244c9dc6eb8439c'>git: &lt;git-checkout&gt; allows tags in its 'commit' field.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
Fixes &lt;https://bugs.gnu.org/36371&gt;.
Reported by Tobias Geerinckx-Rice &lt;me@tobias.gr&gt;.

* guix/git.scm (git-checkout-compiler): Pass 'tag-or-commit' to
'latest-repository-commit*'.
* doc/guix.texi (Package Transformation Options): Update '--with-commit'
documentation accordingly.
* tests/guix-build-branch.sh: Add test.


</td></tr>
<tr class='logheader'><td><span title='2018-11-30 17:03:04 +0100'>2018-11-30</span></td><td class='logsubject'><a href='/guix/commit/tests/guix-build-branch.sh?id=a3d77c51bc8f641c12989e18dc5e03add776f87e'>git: Nicely report '--with-commit' errors.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* guix/git.scm (latest-repository-commit*): Rewrite to catch
'git-error'.
* po/guix/POTFILES.in: Add guix/git.scm.
* tests/guix-build-branch.sh: Test --with-commit errors.


</td></tr>
<tr class='logheader'><td><span title='2018-11-30 17:03:04 +0100'>2018-11-30</span></td><td class='logsubject'><a href='/guix/commit/tests/guix-build-branch.sh?id=b18f7234aac9eb42097c1b4cda7efe0be5aab132'>guix build: Add '--with-commit'.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* guix/git.scm (&lt;git-checkout&gt;)[commit]: New field.
(git-checkout-compiler): Honor it.
* guix/scripts/build.scm (evaluate-git-replacement-specs): Add 'proc'
parameter and honor it.
(transform-package-source-branch)[replace]: New procedure.
Adjust 'evaluate-git-replacement-specs' accordingly.
(transform-package-source-commit): New procedure.
(%transformations, %transformation-options)
(show-transformation-options-help): Add 'with-commit'.
* tests/guix-build-branch.sh: Add test.
* doc/guix.texi (Package Transformation Options): Document it.


</td></tr>
<tr class='logheader'><td><span title='2018-11-30 17:03:04 +0100'>2018-11-30</span></td><td class='logsubject'><a href='/guix/commit/tests/guix-build-branch.sh?id=96915a448cfe8383a1c47f4b9a1cc810e5161fd0'>guix build: Add '--with-branch' transformation option.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* guix/scripts/build.scm (evaluate-git-replacement-specs)
(transform-package-source-branch): New procedures.
(%transformations, %transformation-options): Add 'with-branch'.
(show-transformation-options-help): Likewise.
* tests/guix-build-branch.sh: New file.
* Makefile.am (SH_TESTS): Add it.
* doc/guix.texi (Package Transformation Options): Document it.


</td></tr>