This patch adds an include needed since icu59:
Source: https://git.archlinux.org/svntogit/community.git/plain/trunk/icu59.patch?h=packages/aegisub
--- aegisub-3.2.2/src/utils.cpp	2014-12-08 02:07:09.000000000 +0200
+++ aegisub-3.2.2/src/utils.cpp	2017-04-26 11:11:15.438239182 +0300
@@ -44,6 +44,7 @@
 #include <boost/filesystem/path.hpp>
 #include <map>
 #include <unicode/locid.h>
+#include <unicode/unistr.h>
 #include <wx/clipbrd.h>
 #include <wx/filedlg.h>
 #include <wx/stdpaths.h>
'main'><a href='/'>index</a> : <a href='/guix/'>guix</a></td><td class='form'><form method='get'>
<input type='hidden' name='id' value='b45d08641bf25ba4a9e258864a0f7d3acb489306'/><input type='hidden' name='showmsg' value='1'/><select name='h' onchange='this.form.submit();'>
<option value='koszko' selected='selected'>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=b45d08641bf25ba4a9e258864a0f7d3acb489306'>refs</a><a class='active' href='/guix/log/po/packages/tr.po?showmsg=1'>log</a><a href='/guix/tree/po/packages/tr.po?id=b45d08641bf25ba4a9e258864a0f7d3acb489306'>tree</a><a href='/guix/commit/po/packages/tr.po?id=b45d08641bf25ba4a9e258864a0f7d3acb489306'>commit</a><a href='/guix/diff/po/packages/tr.po?id=b45d08641bf25ba4a9e258864a0f7d3acb489306'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/po/packages/tr.po'>
<input type='hidden' name='id' value='b45d08641bf25ba4a9e258864a0f7d3acb489306'/><input type='hidden' name='showmsg' value='1'/><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=b45d08641bf25ba4a9e258864a0f7d3acb489306&amp;showmsg=1'>root</a>/<a href='/guix/log/po?id=b45d08641bf25ba4a9e258864a0f7d3acb489306&amp;showmsg=1'>po</a>/<a href='/guix/log/po/packages?id=b45d08641bf25ba4a9e258864a0f7d3acb489306&amp;showmsg=1'>packages</a>/<a href='/guix/log/po/packages/tr.po?id=b45d08641bf25ba4a9e258864a0f7d3acb489306&amp;showmsg=1'>tr.po</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/po/packages/tr.po?id=b45d08641bf25ba4a9e258864a0f7d3acb489306'>Collapse</a>)</th><th class='left'>Author</th></tr>
<tr class='logheader'><td><span title='2022-12-04 22:25:23 +0100'>2022-12-04</span></td><td class='logsubject'><a href='/guix/commit/po/packages/tr.po?id=2e75b328b6bbdadbffe5b643a4891b5026a0defd'>nls: Update translations.</a></td><td>Julien Lepiller</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
po/packages/vi.po: New file.
po/packages/LINGUAS: Add it.


</td></tr>
<tr class='logheader'><td><span title='2022-11-04 10:56:38 +0100'>2022-11-04</span></td><td class='logsubject'><a href='/guix/commit/po/packages/tr.po?id=a65ce9dd500460af4f97e7398fb35dd817f4c677'>nls: Update translations.</a></td><td>Julien Lepiller</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* po/guix/lt.po: New file.
* po/guix/LINGUAS: Add lt.


</td></tr>
<tr class='logheader'><td><span title='2022-10-06 08:20:20 +0200'>2022-10-06</span></td><td class='logsubject'><a href='/guix/commit/po/packages/tr.po?id=70fc8f6d619ce9f16a8cc0bbb10a011bd3a9997a'>nls: Update translations.</a></td><td>Julien Lepiller</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
</td></tr>
<tr class='logheader'><td><span title='2022-09-04 16:52:02 +0200'>2022-09-04</span></td><td class='logsubject'><a href='/guix/commit/po/packages/tr.po?id=77e3042aef6d8e519d016555464e466399318b4f'>nls: Update translations.</a></td><td>Julien Lepiller</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
</td></tr>
<tr class='logheader'><td><span title='2022-08-10 23:32:24 +0200'>2022-08-10</span></td><td class='logsubject'><a href='/guix/commit/po/packages/tr.po?id=aacbe59fbceb8a93ecb68fed8581dfdd70dafc11'>nls: Update translations.</a></td><td>Julien Lepiller</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
po/guix/bn.po: New file.
po/guix/LINGUAS: Add it.


</td></tr>
<tr class='logheader'><td><span title='2022-07-09 21:49:34 +0200'>2022-07-09</span></td><td class='logsubject'><a href='/guix/commit/po/packages/tr.po?id=e0d47d8facafb6d6c04741bbf30eefbc68aaefb9'>nls: Update translations.</a></td><td>Julien Lepiller</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
po/guix/tr.po: New file.
po/guix/LINGUAS: Add it.


</td></tr>
<tr class='logheader'><td><span title='2022-06-04 17:42:54 +0200'>2022-06-04</span></td><td class='logsubject'><a href='/guix/commit/po/packages/tr.po?id=809c57c872a6dd48007d1abf6d7f3dd1482ec53a'>nls: Update translations.</a></td><td>Julien Lepiller</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
po/packages/tr.po: New file.
po/packages/LINGUAS: Add it.


</td></tr>