Add all /gnu/store/ prefixes found in PYTHONPATH to the prefixes where
site-packages (and .pth files) are searched.

*** Python-2.7.11/Lib/site.py.orig	2016-10-17 23:27:23.746149690 +0200
--- Python-2.7.11/Lib/site.py	2016-10-17 23:44:51.930871644 +0200
***************
*** 65,70 ****
--- 65,82 ----
  
  # Prefixes for site-packages; add additional prefixes like /usr/local here
  PREFIXES = [sys.prefix, sys.exec_prefix]
+ # Guix: Add all /gnu/store-paths in PYTHONPATH--these are all
+ # "prefixes".  This is required to search .pth files in all python
+ # packages contained in /gnu/store which is required to make
+ # .pth-defined namespace packages work.
+ # This is necessary if the packages are not merged into a single
+ # `site-packages` directory (like when using `guix environment`) but
+ # listed in PYTHONPATH (like when running `guix build`).
+ for p in sys.path:
+     if p.startswith('/gnu/store/'):
+         PREFIXES.append(p[:p.find('/', 44)]) # find first pathsep after hash
+ del p
+ 
  # Enable per user site-packages directory
  # set it to False to disable the feature or True to force the feature
  ENABLE_USER_SITE = None
fs</a><a class='active' href='/guix/log/gnu/services/linux.scm'>log</a><a href='/guix/tree/gnu/services/linux.scm?id=f5340e004590d3775157b335efa8a1525605a55c'>tree</a><a href='/guix/commit/gnu/services/linux.scm?id=f5340e004590d3775157b335efa8a1525605a55c'>commit</a><a href='/guix/diff/gnu/services/linux.scm?id=f5340e004590d3775157b335efa8a1525605a55c'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/services/linux.scm'>
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<div class='path'>path: <a href='/guix/log/?id=f5340e004590d3775157b335efa8a1525605a55c'>root</a>/<a href='/guix/log/gnu?id=f5340e004590d3775157b335efa8a1525605a55c'>gnu</a>/<a href='/guix/log/gnu/services?id=f5340e004590d3775157b335efa8a1525605a55c'>services</a>/<a href='/guix/log/gnu/services/linux.scm?id=f5340e004590d3775157b335efa8a1525605a55c'>linux.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/services/linux.scm?id=f5340e004590d3775157b335efa8a1525605a55c&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-04-12 18:24:27 +0000'>2020-04-12</span></td><td><a href='/guix/commit/gnu/services/linux.scm?id=8e4d1493f1d56e29252eb7a36b3eee2a0e073ee4'>services: kernel-module-loader: Clean up.</a><span class='msg-avail'>...<span class='msg-tooltip'>Suggested by Efraim Flashner &lt;efraim@flashner.co.il&gt;.
See &lt;https://lists.gnu.org/archive/html/bug-guix/2020-04/msg00237.html&gt;.

* gnu/services/linux.scm (kernel-module-loader-shepherd-service):
Remove unneeded 'respawn?' field.
</span></span></td><td>Florian Pelz</td></tr>
<tr><td><span title='2020-04-05 13:07:13 +0200'>2020-04-05</span></td><td><a href='/guix/commit/gnu/services/linux.scm?id=044d1478c9a63a64547c9cc320008f8d8fbf6791'>gnu: Add kernel-module-loader-service.</a><span class='msg-avail'>...<span class='msg-tooltip'>* doc/guix.texi (Linux Services): Add a new subsection and document the
new service and its configuration.
* gnu/services/linux.scm (kernel-module-loader-service-type): New type.
(kernel-module-loader-shepherd-service): New procedure.
* gnu/tests/linux-modules.scm (module-loader-program): Procedure
removed.
(modules-loaded?-program): New procedure.
(run-loadable-kernel-modules-test): 'module-loader-program' procedure
replaced by the new one.
[os]: Use 'kernel-module-loader-service'.

Signed-off-by: Danny Milosavljevic &lt;dannym@scratchpost.org&gt;
</span></span></td><td>Brice Waegeneire</td></tr>
<tr><td><span title='2020-01-31 23:37:13 -0500'>2020-01-31</span></td><td><a href='/guix/commit/gnu/services/linux.scm?id=d3e439e355284f136ff13eb3e6fffb4661552f3b'>gnu: Add earlyoom-service-type.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/linux.scm: New file.
* tests/services/linux.scm: Add test.
* Makefile.am (SCM_TESTS): Register test.
* doc/guix.texi (Linux Services): Add a new section and document the new
service and its configuration.
</span></span></td><td>Maxim Cournoyer</td></tr>