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configfile pointing to outdated guix builds, which could get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;
cted'>koszko</option>
<option 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=524b54ae58bbfbb69ec7f843281845b41cdfa471'>refs</a><a class='active' href='/guix/log/tests/build-emacs-utils.scm'>log</a><a href='/guix/tree/tests/build-emacs-utils.scm?id=524b54ae58bbfbb69ec7f843281845b41cdfa471'>tree</a><a href='/guix/commit/tests/build-emacs-utils.scm?id=524b54ae58bbfbb69ec7f843281845b41cdfa471'>commit</a><a href='/guix/diff/tests/build-emacs-utils.scm?id=524b54ae58bbfbb69ec7f843281845b41cdfa471'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/tests/build-emacs-utils.scm'>
<input type='hidden' name='id' value='524b54ae58bbfbb69ec7f843281845b41cdfa471'/><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=524b54ae58bbfbb69ec7f843281845b41cdfa471'>root</a>/<a href='/guix/log/tests?id=524b54ae58bbfbb69ec7f843281845b41cdfa471'>tests</a>/<a href='/guix/log/tests/build-emacs-utils.scm?id=524b54ae58bbfbb69ec7f843281845b41cdfa471'>build-emacs-utils.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/build-emacs-utils.scm?id=524b54ae58bbfbb69ec7f843281845b41cdfa471&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-07-13 10:49:40 -0400'>2022-07-13</span></td><td><a href='/guix/commit/tests/build-emacs-utils.scm?id=dcf133587ac7d73ba306a314e1a496a7efb9960b'>tests: build-emacs-utils: Allow test to pass on Emacs 27 too.</a><span class='msg-avail'>...<span class='msg-tooltip'>* tests/build-emacs-utils.scm
("emacs-batch-script: raise &amp;emacs-batch-error on failure"): More loosely
match expected error string, which differs between Emacs 27 and Emacs 28.
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2022-06-17 23:39:32 +0200'>2022-06-17</span></td><td><a href='/guix/commit/tests/build-emacs-utils.scm?id=c3afbd05bf541b31b122e6093ff10eabf6a47926'>guix: emacs-utils: Add emacs-header-parse.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/build/emacs-utils.scm (emacs-header-parse): New procedure.

* tests/build-emacs-utils.scm ("emacs-header-parse: fetch version",
  "emacs-header-parse: fetch keywords", "emacs-header-parse: fetch
  nonexistent author"): New tests.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Fredrik Salomonsson</td></tr>
<tr><td><span title='2022-06-17 23:39:31 +0200'>2022-06-17</span></td><td><a href='/guix/commit/tests/build-emacs-utils.scm?id=f8275916fc6fcb3dd9bd8ef7dc4ddce2dca98c7d'>guix: emacs-utils: Add emacs-batch-script.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/build/emacs-utils.scm (emacs-batch-script): New procedure.

* tests/build-emacs-utils.scm: New file.

* Makefile.am (TESTS): Add `tests/build-emacs-utils.scm'.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Fredrik Salomonsson</td></tr>