This patch replaces the environment variable "GTK_IM_MODULE" with
"GUIX_GTK3_IM_MODULE_FILE" to prevent this version of GTK+ from loading input
method modules for other major versions of GTK+.

--- gtk+-3.20.3/gtk/deprecated/gtkrc.c	2016-08-21 22:40:48.168437905 +0200
+++ gtk+-3.20.3/gtk/deprecated/gtkrc.c	2016-08-23 10:12:09.097070097 +0200
@@ -768,7 +768,7 @@
 gchar *
 gtk_rc_get_im_module_file (void)
 {
-  const gchar *var = g_getenv ("GTK_IM_MODULE_FILE");
+  const gchar *var = g_getenv ("GUIX_GTK3_IM_MODULE_FILE");
   gchar *result = NULL;
 
   if (var)
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<tr><td><span title='2023-07-20 10:11:34 +0200'>2023-07-20</span></td><td><a href='/guix/commit/gnu/packages/tcl.scm?id=a4367fae492d17421867c16eef1754ecdd9a36fd'>gnu: tcl: Remove failing tests on the Hurd..</a><span class='msg-avail'>...</span></td><td>Janneke Nieuwenhuizen</td></tr>
<tr><td><span title='2023-03-02 10:55:08 +0000'>2023-03-02</span></td><td><a href='/guix/commit/gnu/packages/tcl.scm?id=7df09ee0ab3e7962ef27859ce87e06a323059284'>Merge remote-tracking branch 'savannah/master' into core-updates</a><span class='msg-avail'>...</span></td><td>Christopher Baines</td></tr>
<tr><td><span title='2023-02-19 01:00:01 +0100'>2023-02-19</span></td><td><a href='/guix/commit/gnu/packages/tcl.scm?id=1e6ddceb8318d413745ca1c9d91fde01b1e0364b'>gnu: Use HTTPS package home pages wherever possible.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>