See comment in gnu/build/icecat-extension.scm.

--- a/toolkit/mozapps/extensions/internal/XPIDatabase.jsm
+++ b/toolkit/mozapps/extensions/internal/XPIDatabase.jsm
@@ -3452,6 +3452,7 @@ const XPIDatabaseReconcile = {
     if (
       newAddon ||
       oldAddon.updateDate != xpiState.mtime ||
+      oldAddon.path != xpiState.path ||
       (aUpdateCompatibility && this.isAppBundledLocation(installLocation))
     ) {
       newAddon = this.updateMetadata(
@@ -3460,8 +3461,6 @@ const XPIDatabaseReconcile = {
         xpiState,
         newAddon
       );
-    } else if (oldAddon.path != xpiState.path) {
-      newAddon = this.updatePath(installLocation, oldAddon, xpiState);
     } else if (aUpdateCompatibility || aSchemaChange) {
       newAddon = this.updateCompatibility(
         installLocation,
/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=8520f00d6989ff5ab22755a97dfcfd0375f6b5ca'>refs</a><a class='active' href='/guix/log/tests/guix-shell-export-manifest.sh'>log</a><a href='/guix/tree/tests/guix-shell-export-manifest.sh?id=8520f00d6989ff5ab22755a97dfcfd0375f6b5ca'>tree</a><a href='/guix/commit/tests/guix-shell-export-manifest.sh?id=8520f00d6989ff5ab22755a97dfcfd0375f6b5ca'>commit</a><a href='/guix/diff/tests/guix-shell-export-manifest.sh?id=8520f00d6989ff5ab22755a97dfcfd0375f6b5ca'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/tests/guix-shell-export-manifest.sh'>
<input type='hidden' name='id' value='8520f00d6989ff5ab22755a97dfcfd0375f6b5ca'/><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=8520f00d6989ff5ab22755a97dfcfd0375f6b5ca'>root</a>/<a href='/guix/log/tests?id=8520f00d6989ff5ab22755a97dfcfd0375f6b5ca'>tests</a>/<a href='/guix/log/tests/guix-shell-export-manifest.sh?id=8520f00d6989ff5ab22755a97dfcfd0375f6b5ca'>guix-shell-export-manifest.sh</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/guix-shell-export-manifest.sh?id=8520f00d6989ff5ab22755a97dfcfd0375f6b5ca&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-06-16 23:57:40 +0200'>2022-06-16</span></td><td><a href='/guix/commit/tests/guix-shell-export-manifest.sh?id=925a57c5d04553ff6c514867348e7d3c5c22ca66'>shell: Fix '--export-manifest' for cached profiles and when '-p' is used.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;https://issues.guix.gnu.org/55521&gt;.

* guix/scripts/shell.scm (export-manifest): When computing 'manifest',
honor the 'profile key.
* tests/guix-shell-export-manifest.sh: Add test.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-06-01 22:22:19 +0200'>2022-06-01</span></td><td><a href='/guix/commit/tests/guix-shell-export-manifest.sh?id=2acc83daa5a3dd1b4ed3f8c32ecadf1313e6fd18'>shell: '--export-manifest -D x -D y' generates a valid manifest.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/scripts/shell.scm (manifest-&gt;code*): Add missing 'list' in
generated 'concatenate-manifests' call.
* tests/guix-shell-export-manifest.sh: Add test.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-04-08 18:14:35 +0200'>2022-04-08</span></td><td><a href='/guix/commit/tests/guix-shell-export-manifest.sh?id=20691c70cf2c5a61af7f906b65d57a524ecfc4f3'>tests: 'guix shell --export-manifest' test no longer needs networking.</a><span class='msg-avail'>...<span class='msg-tooltip'>* tests/guix-shell-export-manifest.sh: Use '--with-input' rather than
'--with-latest' as the latter would crash in the absence of network
access.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-04-04 22:58:04 +0200'>2022-04-04</span></td><td><a href='/guix/commit/tests/guix-shell-export-manifest.sh?id=c42b7baf13c7633b4512e94da7445299c57b247d'>shell: Add '--export-manifest'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/scripts/shell.scm (show-help, %options): Add '--export-manifest'.
(manifest-entry-version-prefix, manifest-&gt;code*)
(export-manifest): New procedures.
(guix-shell): Honor '--export-manifest'.
* tests/guix-shell-export-manifest.sh: New file.
* Makefile.am (SH_TESTS): Add it.
* doc/guix.texi (Invoking guix shell): Document '--export-manifest'.
(Invoking guix environment): Link to it.
(Invoking guix pack): Likewise.
</span></span></td><td>Ludovic Courtès</td></tr>