Most Guix system setup with desktop evironment will install GDK_PIXBUF_MODULE_FILE
environment variable in the system profile, and it'll be leaked into the sandbox
environment of flatpak, so the applications in sandbox may fail to find correct
GdkPixbuf loaders.

This patch unset the GDK_PIXBUF_MODULE_FILE environment variable before running
the sandboxed applications, prevents it to load GdkPixbuf loaders from the path
of host system.

--- a/common/flatpak-run.c
+++ b/common/flatpak-run.c
@@ -1853,6 +1853,7 @@ static const ExportData default_exports[] = {
   {"GST_PTP_HELPER", NULL},
   {"GST_PTP_HELPER_1_0", NULL},
   {"GST_INSTALL_PLUGINS_HELPER", NULL},
+  {"GDK_PIXBUF_MODULE_FILE", NULL},
 };
 
 static const ExportData no_ld_so_cache_exports[] = {
scripts'>koszko-scripts</option>
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<div class='path'>path: <a href='/guix/log/?id=b5dea86d6411de36a3b7b1c5a0a13a22306a0554'>root</a>/<a href='/guix/log/tests?id=b5dea86d6411de36a3b7b1c5a0a13a22306a0554'>tests</a>/<a href='/guix/log/tests/swh.scm?id=b5dea86d6411de36a3b7b1c5a0a13a22306a0554'>swh.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/tests/swh.scm?id=b5dea86d6411de36a3b7b1c5a0a13a22306a0554&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2024-03-09 18:55:49 +0100'>2024-03-09</span></td><td><a href='/guix/commit/tests/swh.scm?id=ddd455c0dd5a527f3c7e94b8b9056155facb37e6'>swh: ‘lookup-origin-revision’ handles branches pointing to directories.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;https://issues.guix.gnu.org/69070&gt;.

* guix/swh.scm (branch-target): Add clause for 'directory and 'alias.
(lookup-origin-revision): Iterate over all the visits of ORIGIN instead
of just the first one.  Handle the case where ‘branch-target’ returns
something other than a release or revision.
* tests/swh.scm ("lookup-origin-revision"): New test.

Change-Id: I7f636739a719908763bca1d3e7376341dd62e816
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2024-02-12 12:03:53 +0100'>2024-02-12</span></td><td><a href='/guix/commit/tests/swh.scm?id=be773bd192466fa7e26938a157c0885adf46139e'>swh: Add bindings for the “ExtID” API.</a><span class='msg-avail'>...<span class='msg-tooltip'>This interface was deployed at archive.softwareheritage.org a few days
ago.  Our main use case will be looking up directories by “nar-sha256”
hashes.

* guix/swh.scm (&lt;external-id&gt;): New JSON-mapped record type.
(lookup-external-id, lookup-directory-by-nar-hash): New procedures.
* tests/swh.scm (%external-id): New variable.
("lookup-directory-by-nar-hash"): New test.

Change-Id: Ib671c7798aeb6f8132ac78f2b06b9285da8e7bd5
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-01-21 11:22:08 +0100'>2021-01-21</span></td><td><a href='/guix/commit/tests/swh.scm?id=5225732b9b54ffa92b9d199246b87dae666a3f77'>swh: Test proper handling of null visit snapshot URL.</a><span class='msg-avail'>...<span class='msg-tooltip'>* tests/swh.scm (%origin): Change "visits_url" to "origin_visits_url".
(%visits): New variable.
("origin-visit, no snapshots"): New test.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-12-21 17:47:35 +0100'>2020-12-21</span></td><td><a href='/guix/commit/tests/swh.scm?id=9608f4003dedd8dfe99327c15668ca1a43ebd93b'>tests: Fix malformed JSON.</a><span class='msg-avail'>...<span class='msg-tooltip'>Guile-JSON 4.3.2 would parse in spite of these typos, but 4.4.1 is
stricter.

* tests/swh.scm (%directory-entries): Add missing comma.
* tests/cve-sample.json: Likewise.
</span></span></td><td>Ludovic Courtès</td></tr>