# -*- 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])
an></td><td><a href='/guix/commit/gnu/machine.scm?id=a5e2fc73760a2ae023f2e56bdbf8025971f90e64'>utils: Move &lt;location&gt; and '&amp;error-location' to (guix diagnostics).</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/utils.scm (&lt;location&gt;, source-properties-&gt;location)
(location-&gt;source-properties, &amp;error-location): Move to...
* guix/diagnostics.scm: ... here.
* gnu.scm: Adjust imports accordingly.
* gnu/machine.scm: Likewise.
* gnu/system.scm: Likewise.
* gnu/tests.scm: Likewise.
* guix/inferior.scm: Likewise.
* tests/channels.scm: Likewise.
* tests/packages.scm: Likewise.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-02-09 23:16:45 +0100'>2020-02-09</span></td><td><a href='/guix/commit/gnu/machine.scm?id=e81344428726f3dae5d2a2e7bb296f46fcde6cc5'>Update e-mail address for Jakob L. Kreuze.</a><span class='msg-avail'>...<span class='msg-tooltip'>As requested here:
&lt;https://lists.gnu.org/archive/html/guix-devel/2020-02/msg00128.html&gt;.

* .mailmap: Add an entry for Jakob.
* gnu/machine.scm, gnu/machine/digital-ocean.scm, gnu/machine/ssh.scm,
gnu/packages/admin.scm, gnu/packages/i2p.scm, gnu/packages/music.scm,
gnu/packages/web.scm, gnu/tests/reconfigure.scm, guix/scripts/deploy.scm,
guix/scripts/system/reconfigure.scm: Update their e-mail address.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2019-12-08 00:47:26 +0100'>2019-12-08</span></td><td><a href='/guix/commit/gnu/machine.scm?id=a1d7920861a8d6c6774149eaf939eb2636942090'>machine: Remove unnecessary record self-referencing bindings.</a><span class='msg-avail'>...<span class='msg-tooltip'>'this-machine' and 'this-machine-ssh-configuration' were useless given
that there are no thunked fields.

* gnu/machine.scm (&lt;machine&gt;)[this-machine]: Remove.
* gnu/machine/ssh.scm (&lt;machine-ssh-configuration&gt;)
[this-machine-ssh-configuration]: Remove.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-12-07 00:59:56 +0100'>2019-12-07</span></td><td><a href='/guix/commit/gnu/machine.scm?id=eaabc5e87f4e48d7bce88ca231f5fc2d554ca3d6'>machine: Add provenance tracking to each machine operating system.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/machine.scm (&lt;machine&gt;): Rename accessor to
'%machine-operating-system'.
(machine-operating-system): New procedure.
* doc/guix.texi (Service Reference): Mention it.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-08-15 07:43:09 -0400'>2019-08-15</span></td><td><a href='/guix/commit/gnu/machine.scm?id=9c70c460a05b2bc60f3f3602f0a2dba0f79ce86c'>machine: Implement 'roll-back-machine'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/machine.scm (roll-back-machine, &amp;deploy-error, deploy-error?)
(deploy-error-should-roll-back)
(deploy-error-captured-args): New variable.
* gnu/machine/ssh.scm (roll-back-managed-host): New variable.
* guix/scripts/deploy.scm (guix-deploy): Roll-back systems when a
deployment fails.
</span></span></td><td>Jakob L. Kreuze</td></tr>
<tr><td><span title='2019-08-06 15:48:51 -0400'>2019-08-06</span></td><td><a href='/guix/commit/gnu/machine.scm?id=d97ce20400b5d2967bfbc0e9fbfb99bbb2daed4f'>machine: Rename 'system' field.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/machine.scm (machine-system): Delete variable.
(machine-operating-system): New variable.
All callers changed.
* doc/guix.texi (Invoking guix deploy): Use the
'machine-operating-system' accessor rather than 'machine-system'.
</span></span></td><td>Jakob L. Kreuze</td></tr>
<tr><td><span title='2019-07-06 02:10:04 -0400'>2019-07-06</span></td><td><a href='/guix/commit/gnu/machine.scm?id=fa9edf09e992db7510c7471486dffc93e1e707e5'>gnu: Add machine type for deployment specifications.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/machine.scm: New file.
* gnu/machine/ssh.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.
</span></span></td><td>Jakob L. Kreuze</td></tr>