Lookup gzdoom pk3 files in the installed directory in
addition to the path that is stored in ~/.config/gzdoom/.

Simply replacing the hardcoded /usr/share would leave the
configfile pointing to outdated guix builds, which could get
garbage collected and break the gzdoom installation.
This ensures that the files installed with the corresponding
build will be used.

--- /src/d_main.cpp	2018-01-16 22:13:09.700602781 +0200
+++ /src/d_main.cpp	2018-01-16 22:22:36.560617961 +0200
@@ -1716,6 +1716,11 @@
 		return wad;
 	}
 
+    mysnprintf (wad, countof(wad), "%s/%s", GUIX_OUT_PK3, file);
+    if (DirEntryExists (wad)) {
+        return wad;
+    }
+
 	if (GameConfig != NULL && GameConfig->SetSection ("FileSearch.Directories"))
 	{
 		const char *key;
ion value='koszko-scripts'>koszko-scripts</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
<table class='tabs'><tr><td>
<a href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=cafd4d387b213f1f50c9c2a9af0f45a1fe41516f'>refs</a><a class='active' href='/guix/log/tests/pack.scm'>log</a><a href='/guix/tree/tests/pack.scm?id=cafd4d387b213f1f50c9c2a9af0f45a1fe41516f'>tree</a><a href='/guix/commit/tests/pack.scm?id=cafd4d387b213f1f50c9c2a9af0f45a1fe41516f'>commit</a><a href='/guix/diff/tests/pack.scm?id=cafd4d387b213f1f50c9c2a9af0f45a1fe41516f'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/tests/pack.scm'>
<input type='hidden' name='id' value='cafd4d387b213f1f50c9c2a9af0f45a1fe41516f'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=cafd4d387b213f1f50c9c2a9af0f45a1fe41516f'>root</a>/<a href='/guix/log/tests?id=cafd4d387b213f1f50c9c2a9af0f45a1fe41516f'>tests</a>/<a href='/guix/log/tests/pack.scm?id=cafd4d387b213f1f50c9c2a9af0f45a1fe41516f'>pack.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/pack.scm?id=cafd4d387b213f1f50c9c2a9af0f45a1fe41516f&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2018-11-06 23:21:24 +0100'>2018-11-06</span></td><td><a href='/guix/commit/tests/pack.scm?id=72dc64f8f720268930eed448abfc15d2a0eca3cf'>store-copy: Canonicalize the mtime and permissions of the store copy.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-11-06 23:21:24 +0100'>2018-11-06</span></td><td><a href='/guix/commit/tests/pack.scm?id=1ff53787dbd4b1846ae523aef86ada3996de5e6d'>pack: Add test for 'self-contained-tarball' with localstatedir.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-11-06 23:21:24 +0100'>2018-11-06</span></td><td><a href='/guix/commit/tests/pack.scm?id=598a6b87cc6636aee9dec57ae95922da0a6e31e8'>pack: Squashfs backend now honors '--localstatedir'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-11-06 23:21:24 +0100'>2018-11-06</span></td><td><a href='/guix/commit/tests/pack.scm?id=f5a2fb1bfbb620a6ce23ac0e7e15132cae9207da'>pack: Docker backend now honors '--localstatedir'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-11-06 23:21:23 +0100'>2018-11-06</span></td><td><a href='/guix/commit/tests/pack.scm?id=b27ef1d46cfdc3c994b106241f99cd7142083d13'>pack: Import (guix store database) only when '--localstatedir' is passed.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-10-28 00:30:50 +0200'>2018-10-28</span></td><td><a href='/guix/commit/tests/pack.scm?id=ec397b312f901da59d9a2e1cffb26bf31507e61f'>tests: Fix typo.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-10-19 18:28:57 +0200'>2018-10-19</span></td><td><a href='/guix/commit/tests/pack.scm?id=19c924af4f3726688ca155a905ebf1cb9acdfca2'>tests: Run 'guix pack' tests using the external store.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-09-18 23:23:44 +0200'>2018-09-18</span></td><td><a href='/guix/commit/tests/pack.scm?id=cda08dd339112c78881e91597326498331b16dca'>tests: Skip 'self-contained-tarball' test unconditionally.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-06-01 15:17:41 +0200'>2018-06-01</span></td><td><a href='/guix/commit/tests/pack.scm?id=ccc951cab3172adfdaf6fd2dfa8f8cdb98358a69'>pack: Adjust test to expect relative symlinks.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-06-01 14:18:31 +0200'>2018-06-01</span></td><td><a href='/guix/commit/tests/pack.scm?id=44057a461b1fa8102938c4e0f54d7cbc9dd09b03'>tests: Fix arguments in pack test.</a><span class='msg-avail'>...</span></td><td>Ricardo Wurmus</td></tr>
t-desktop.tmpl: Complete i3-wm.</a><span class='msg-avail'>...</span></td><td>Leo Famulari</td></tr>
<tr><td><span title='2017-02-13 10:02:54 +0100'>2017-02-13</span></td><td><a href='/guix/commit/gnu/system/examples/lightweight-desktop.tmpl?id=d2986552d17058ce532c7f2377185e1b2323adf2'>system: Use the normalized codeset for the locale name in the examples.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>