This is copied from NixOS, which is under MIT licence.
https://github.com/NixOS/nixpkgs/blob/master/pkgs/desktops/gnome/misc/gpaste/
diff --git a/src/gnome-shell/extension.js b/src/gnome-shell/extension.js
index c8773fd6..9efbed67 100644
--- a/src/gnome-shell/extension.js
+++ b/src/gnome-shell/extension.js
@@ -6,6 +6,8 @@
 
 const Config = imports.misc.config;
 
+imports.gi.GIRepository.Repository.prepend_search_path('@typelibPath@');
+
 imports.gi.versions.Clutter = Config.LIBMUTTER_API_VERSION;
 imports.gi.versions.GLib = '2.0';
 imports.gi.versions.GPaste = '2';
diff --git a/src/gnome-shell/prefs.js b/src/gnome-shell/prefs.js
index 32244ab2..74b85572 100644
--- a/src/gnome-shell/prefs.js
+++ b/src/gnome-shell/prefs.js
@@ -6,6 +6,8 @@
 
 imports.gi.versions.GPasteGtk = '4';
 
+imports.gi.GIRepository.Repository.prepend_search_path('@typelibPath@');
+
 const ExtensionUtils = imports.misc.extensionUtils;
 
 const { GPasteGtk } = imports.gi;
diff --git a/src/libgpaste/gpaste/gpaste-settings.c b/src/libgpaste/gpaste/gpaste-settings.c
index 7e53eb64..57c399fc 100644
--- a/src/libgpaste/gpaste/gpaste-settings.c
+++ b/src/libgpaste/gpaste/gpaste-settings.c
@@ -1013,7 +1013,11 @@ create_g_settings (void)
     }
     else
     {
-        return g_settings_new (G_PASTE_SETTINGS_NAME);
+        // library used by introspection requires schemas but we cannot set XDG_DATA_DIRS for the library
+        GSettingsSchemaSource *schema_source = g_settings_schema_source_new_from_directory ("@gschemasCompiled@", NULL, FALSE, NULL);
+        g_autoptr (GSettingsSchema) schema = g_settings_schema_source_lookup (schema_source, G_PASTE_SETTINGS_NAME, FALSE);
+        g_settings_schema_source_unref (schema_source);
+        return g_settings_new_full (schema, NULL, NULL);
     }
 }
 
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<div class='path'>path: <a href='/guix/log/?id=5b5fb77ff9545ae9bd6dde653fa32b6ac6a38d3b'>root</a>/<a href='/guix/log/gnu?id=5b5fb77ff9545ae9bd6dde653fa32b6ac6a38d3b'>gnu</a>/<a href='/guix/log/gnu/tests?id=5b5fb77ff9545ae9bd6dde653fa32b6ac6a38d3b'>tests</a>/<a href='/guix/log/gnu/tests/ssh.scm?id=5b5fb77ff9545ae9bd6dde653fa32b6ac6a38d3b'>ssh.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/tests/ssh.scm?id=5b5fb77ff9545ae9bd6dde653fa32b6ac6a38d3b&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2024-12-09 23:15:44 +0100'>2024-12-09</span></td><td><a href='/guix/commit/gnu/tests/ssh.scm?id=e7cd328714be93ed6a931c9110b52adc7b439752'>tests: Adjust for new return value of ‘start-service’.</a><span class='msg-avail'>...<span class='msg-tooltip'>In Shepherd 1.0, the “running value” of processes is no longer a plain
integer; instead, it is a (process …) sexp.  This commit adjusts tests
to this change in a way that works both for 1.0 and for previous
versions.

* gnu/tests/databases.scm (run-memcached-test)
(run-mysql-test): Don’t expect PID to be a number.
* gnu/tests/docker.scm (run-docker-test)
(run-docker-system-test, run-oci-container-test): Likewise.
* gnu/tests/guix.scm (run-guix-build-coordinator-test)
(run-guix-data-service-test, run-nar-herder-test)
(run-bffe-test): Likewise.
* gnu/tests/ldap.scm (run-ldap-test): Likewise.
* gnu/tests/monitoring.scm (run-prometheus-node-exporter-server-test):
Likewise.
* gnu/tests/virtualization.scm (run-libvirt-test)
(run-qemu-guest-agent-test, run-childhurd-test): Likewise.
* gnu/tests/web.scm (run-webserver-test, run-php-fpm-test)
(run-hpcguix-web-server-test, run-patchwork-test)
(run-agate-test): Likewise
* gnu/tests/ssh.scm (run-ssh-test): Accept a number, an ‘inetd-service’
sexp, or a ‘process’ sexp.

Change-Id: I8c7a37a981f0788780fbc33752a38e7f9a026437
</span></span></td><td>Ludovic Courtès</td></tr>