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,
-scripts'>koszko-scripts</option>
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<tr><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
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<div class='path'>path: <a href='/guix/log/?id=92c4b7c0fd74b4e71ad70bd94211e4dba35a012f'>root</a>/<a href='/guix/log/gnu?id=92c4b7c0fd74b4e71ad70bd94211e4dba35a012f'>gnu</a>/<a href='/guix/log/gnu/packages?id=92c4b7c0fd74b4e71ad70bd94211e4dba35a012f'>packages</a>/<a href='/guix/log/gnu/packages/irc.scm?id=92c4b7c0fd74b4e71ad70bd94211e4dba35a012f'>irc.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/irc.scm?id=92c4b7c0fd74b4e71ad70bd94211e4dba35a012f&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-04-12 21:20:09 +0200'>2020-04-12</span></td><td><a href='/guix/commit/gnu/packages/irc.scm?id=0b7a94cb1353406e7f76f68e9d60418bcd0460ae'>gnu: weechat: Update to 2.8.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/irc.scm (weechat): Update to 2.8.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-02-23 11:30:17 +0200'>2020-02-23</span></td><td><a href='/guix/commit/gnu/packages/irc.scm?id=6634b29f501764f542e3a5fc91bb691ef18b5702'>gnu: weechat: Sort inputs alphabetically.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/irc.scm (weechat)[inputs]: Sort alphabetically.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2020-02-23 11:29:04 +0200'>2020-02-23</span></td><td><a href='/guix/commit/gnu/packages/irc.scm?id=bee2c1a9183cf2298e74ec36efcce77462527581'>gnu: weechat: Update to 2.7.1.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/irc.scm (weechat): Update to 2.7.1.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2020-02-17 17:12:49 +0100'>2020-02-17</span></td><td><a href='/guix/commit/gnu/packages/irc.scm?id=70e9d7ebf76d1f2099304c65fc5c99f86f566cdf'>gnu: weechat: Update to 2.7.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/irc.scm (weechat): Update to 2.7.
[inputs]: Use guile-2.2.
[arguments]: Explicitly disable languages for which auto-detection broke.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-01-08 10:21:46 +0300'>2020-01-08</span></td><td><a href='/guix/commit/gnu/packages/irc.scm?id=7eea3afd02ae613d74e5c17a37d84ed8fbec9c44'>gnu: irssi: Update to 1.2.2.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/irc.scm (irssi)[version]: Update to 1.2.2.
[arguments]: Set HOME environment variable to current working directory before
'check' phase.
</span></span></td><td>Oleg Pykhalov</td></tr>