Based on https://anonscm.debian.org/viewvc/pkg-java/trunk/libxerces2-java/debian/patches/03_bootclasspath.patch?revision=14509, adopted for guix

--- xerces-2_11_0/build.xml.orig	2010-11-26 21:42:11.000000000 +0100
+++ xerces-2_11_0/build.xml	2017-03-28 14:04:41.946606996 +0200
@@ -290,13 +290,14 @@
            destdir="${build.dest}"
            source="${javac.source}"
            target="${javac.target}"
-           classpath="${build.dir}/classes:${tools.dir}/${jar.apis}:${tools.dir}/${jar.resolver}:${tools.dir}/${jar.serializer}"
+           classpath="${build.dir}/classes:${jar.jaxp}:${jar.apis-ext}:${jar.resolver}"
            debug="${debug}" nowarn="true"
            debuglevel="${debuglevel}"
            deprecation="${deprecation}"
            optimize="${optimize}"
            includeAntRuntime="false"
-           includeJavaRuntime="false"
+           includeJavaRuntime="true"
+           bootclasspath="${jar.jaxp}:${jar.apis-ext}:${jar.resolver}"
            excludes="org/xml/sax/** 
                 javax/xml/**
                 org/w3c/dom/*
@@ -1451,13 +1452,14 @@
                destdir="${build.dest}"
                source="${javac.source}"
                target="${javac.target}"
-               classpath="${build.dir}/classes:${tools.dir}/${jar.apis}:${tools.dir}/${jar.resolver}:${tools.dir}/${jar.serializer}"
+               classpath="${build.dir}/classes:${jar.jaxp}:${jar.apis-ext}:${jar.resolver}"
                debug="${debug}"
                debuglevel="${debuglevel}"
                deprecation="${deprecation}"
                optimize="${optimize}"
                includeAntRuntime="false"
-               includeJavaRuntime="false"
+               includeJavaRuntime="true"
+               bootclasspath="${jar.jaxp}:${jar.apis-ext}:${jar.resolver}"
                excludes="org/xml/sax/** 
                     javax/xml/**
                     org/w3c/dom/*
 value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=0c0fdae4ab6480fcb34bc907a2e2a419d3c4a3ff'>root</a>/<a href='/guix/log/gnu?id=0c0fdae4ab6480fcb34bc907a2e2a419d3c4a3ff'>gnu</a>/<a href='/guix/log/gnu/packages?id=0c0fdae4ab6480fcb34bc907a2e2a419d3c4a3ff'>packages</a>/<a href='/guix/log/gnu/packages/popt.scm?id=0c0fdae4ab6480fcb34bc907a2e2a419d3c4a3ff'>popt.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/packages/popt.scm?id=0c0fdae4ab6480fcb34bc907a2e2a419d3c4a3ff&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-12-13 17:48:25 +0100'>2021-12-13</span></td><td><a href='/guix/commit/gnu/packages/popt.scm?id=8394619baceb118df92e355377fd543bb1aa501a'>gnu: Simplify package inputs.</a><span class='msg-avail'>...<span class='msg-tooltip'>This commit was obtained by running:

  ./pre-inst-env guix style

without any additional argument.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-04-10 14:11:27 +0200'>2021-04-10</span></td><td><a href='/guix/commit/gnu/packages/popt.scm?id=80a63aefc2f39fd63b9624c0d1cb579c99cdf518'>gnu: popt: Fix typo in description.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/popt.scm (popt)[description]: Fix typo.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
s-&gt;packages'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages.scm (specifications-&gt;packages): New procedure.
* guix/scripts/home/import.scm (manifest+configuration-files-&gt;code): Use it.
* tests/home-import.scm (match-home-environment-no-services)
(match-home-environment-no-services-nor-packages)
(match-home-environment-bash-service)
(match-home-environment-bash-service-with-alias): Adjust 'packages'
field accordingly.

Co-authored-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Antero Mejr</td></tr>
<tr><td><span title='2022-03-20 19:02:41 +0100'>2022-03-20</span></td><td><a href='/guix/commit/tests/home-import.scm?id=6da2a5a5655668f42ec5b26f875ddbc498e132b6'>home: import: Properly parse aliases that contain quotes.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/scripts/home/import.scm (generate-bash-configuration+modules):
Define 'alias-rx'.
[bash-alias-&gt;pair]: Use it.
* tests/home-import.scm (match-home-environment-bash-service-with-alias):
New variable.
("manifest-&gt;code: Bash service with aliases"): New test.
</span></span></td><td>Ludovic Courtès</td></tr>