glib: add an update script combinator to patch gsettings schema paths

and use it in evolution-data-server and evolution-ews as a proof of
concept

pkgs/applications/networking/mailreaders/evolution/evolution-ews/default.nix

···
 , json-glib
 , libmspack
 , webkitgtk_4_1
+, substituteAll
+, _experimental-update-script-combinators
+, glib
 }:
 
 stdenv.mkDerivation rec {
···
     url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
     sha256 = "p5Jp7wnoqAuo8My8ZDMl0rsFc0158G8x8lAehWfLjb0=";
   };
+
+  patches = [
+    # evolution-ews contains .so files loaded by evolution-data-server refering
+    # schemas from evolution. evolution-data-server is not wrapped with
+    # evolution's schemas because it would be a circular dependency with
+    # evolution.
+    (substituteAll {
+      src = ./hardcode-gsettings.patch;
+      evo = glib.makeSchemaPath evolution evolution.name;
+    })
+  ];
 
   nativeBuildInputs = [
     cmake
···
   ];
 
   passthru = {
-    updateScript = gnome.updateScript {
-      packageName = "evolution-ews";
-      versionPolicy = "odd-unstable";
+    hardcodeGsettingsPatch = glib.mkHardcodeGsettingsPatch {
+      inherit src;
+      glib-schema-to-var = {
+        "org.gnome.evolution.mail" = "evo";
+        "org.gnome.evolution.calendar" = "evo";
+      };
     };
+
+    updateScript =
+      let
+        updateSource = gnome.updateScript {
+          packageName = "evolution-ews";
+          versionPolicy = "odd-unstable";
+        };
+        updatePatch = _experimental-update-script-combinators.copyAttrOutputToFile "evolution-ews.hardcodeGsettingsPatch" ./hardcode-gsettings.patch;
+      in
+      _experimental-update-script-combinators.sequence [
+        updateSource
+        updatePatch
+      ];
   };
 
   meta = with lib; {

pkgs/applications/networking/mailreaders/evolution/evolution-ews/hardcode-gsettings.patch

···
+diff --git a/src/EWS/camel/camel-ews-utils.c b/src/EWS/camel/camel-ews-utils.c
+index 0707f72..1e71954 100644
+--- a/src/EWS/camel/camel-ews-utils.c
++++ b/src/EWS/camel/camel-ews-utils.c
+@@ -1552,7 +1552,18 @@ ews_utils_save_category_changes (GHashTable *old_categories, /* gchar *guid ~> C
+ 
+ 	evo_labels = g_ptr_array_new_full (5, g_free);
+ 
+-	settings = g_settings_new ("org.gnome.evolution.mail");
++	{
++		g_autoptr(GSettingsSchemaSource) schema_source;
++		g_autoptr(GSettingsSchema) schema;
++		schema_source = g_settings_schema_source_new_from_directory("@evo@",
++									    g_settings_schema_source_get_default(),
++									    TRUE,
++									    NULL);
++		schema = g_settings_schema_source_lookup(schema_source,
++							 "org.gnome.evolution.mail",
++							 FALSE);
++		settings = g_settings_new_full(schema, NULL, NULL);
++	}
+ 	strv = g_settings_get_strv (settings, "labels");
+ 
+ 	for (ii = 0; strv && strv[ii]; ii++) {
+diff --git a/src/EWS/common/e-ews-calendar-utils.c b/src/EWS/common/e-ews-calendar-utils.c
+index 6deda60..9b44cc7 100644
+--- a/src/EWS/common/e-ews-calendar-utils.c
++++ b/src/EWS/common/e-ews-calendar-utils.c
+@@ -413,7 +413,18 @@ ews_get_configured_icaltimezone (void)
+ 	gchar *location;
+ 	ICalTimezone *zone = NULL;
+ 
+-	settings = g_settings_new ("org.gnome.evolution.calendar");
++	{
++		g_autoptr(GSettingsSchemaSource) schema_source;
++		g_autoptr(GSettingsSchema) schema;
++		schema_source = g_settings_schema_source_new_from_directory("@evo@",
++									    g_settings_schema_source_get_default(),
++									    TRUE,
++									    NULL);
++		schema = g_settings_schema_source_lookup(schema_source,
++							 "org.gnome.evolution.calendar",
++							 FALSE);
++		settings = g_settings_new_full(schema, NULL, NULL);
++	}
+ 	location = g_settings_get_string (settings, "timezone");
+ 	if (location) {
+ 		zone = i_cal_timezone_get_builtin_timezone (location);
+diff --git a/src/Microsoft365/camel/camel-m365-store.c b/src/Microsoft365/camel/camel-m365-store.c
+index ff1b8e3..4f876c0 100644
+--- a/src/Microsoft365/camel/camel-m365-store.c
++++ b/src/Microsoft365/camel/camel-m365-store.c
+@@ -309,7 +309,18 @@ m365_store_save_category_changes (GHashTable *old_categories, /* gchar *id ~> Ca
+ 
+ 	evo_labels = g_ptr_array_new_full (5, g_free);
+ 
+-	settings = g_settings_new ("org.gnome.evolution.mail");
++	{
++		g_autoptr(GSettingsSchemaSource) schema_source;
++		g_autoptr(GSettingsSchema) schema;
++		schema_source = g_settings_schema_source_new_from_directory("@evo@",
++									    g_settings_schema_source_get_default(),
++									    TRUE,
++									    NULL);
++		schema = g_settings_schema_source_lookup(schema_source,
++							 "org.gnome.evolution.mail",
++							 FALSE);
++		settings = g_settings_new_full(schema, NULL, NULL);
++	}
+ 	strv = g_settings_get_strv (settings, "labels");
+ 
+ 	for (ii = 0; strv && strv[ii]; ii++) {

pkgs/desktops/gnome/core/evolution-data-server/default.nix

···
 , lib
 , fetchurl
 , substituteAll
-, runCommand
-, git
-, coccinelle
 , pkg-config
 , gnome
 , _experimental-update-script-combinators
···
 
   prePatch = ''
     substitute ${./hardcode-gsettings.patch} hardcode-gsettings.patch \
-      --subst-var-by EDS_GSETTINGS_PATH ${glib.makeSchemaPath "$out" "${pname}-${version}"}
+      --subst-var-by EDS ${glib.makeSchemaPath "$out" "${pname}-${version}"}
     patches="$patches $PWD/hardcode-gsettings.patch"
   '';
 
···
   '';
 
   passthru = {
-    # In order for GNOME not to depend on OCaml through Coccinelle,
-    # we materialize the SmPL patch into a unified diff-style patch.
-    hardcodeGsettingsPatch =
-      runCommand
-        "hardcode-gsettings.patch"
-        {
-          inherit src;
-          nativeBuildInputs = [
-            git
-            coccinelle
-            python3 # For patch script
-          ];
-        }
-        ''
-          unpackPhase
-          cd "''${sourceRoot:-.}"
-          git init
-          git add -A
-          spatch --sp-file "${./hardcode-gsettings.cocci}" --dir . --in-place
-          git diff > "$out"
-        '';
+    hardcodeGsettingsPatch = glib.mkHardcodeGsettingsPatch {
+      glib-schema-to-var = {
+        "org.gnome.Evolution.DefaultSources" = "EDS";
+        "org.gnome.evolution.shell.network-config" = "EDS";
+        "org.gnome.evolution-data-server.addressbook" = "EDS";
+        "org.gnome.evolution-data-server.calendar" = "EDS";
+        "org.gnome.evolution-data-server" = "EDS";
 
+      };
+      inherit src;
+    };
     updateScript =
       let
         updateSource = gnome.updateScript {
           packageName = "evolution-data-server";
           versionPolicy = "odd-unstable";
         };
-
-        updateGsettingsPatch = _experimental-update-script-combinators.copyAttrOutputToFile "evolution-data-server.hardcodeGsettingsPatch" ./hardcode-gsettings.patch;
+        updatePatch = _experimental-update-script-combinators.copyAttrOutputToFile "evolution-data-server.hardcodeGsettingsPatch" ./hardcode-gsettings.patch;
       in
       _experimental-update-script-combinators.sequence [
         updateSource
-        updateGsettingsPatch
+        updatePatch
       ];
   };
 

pkgs/desktops/gnome/core/evolution-data-server/hardcode-gsettings.cocci pkgs/development/libraries/glib/hardcode-gsettings.cocci

···
  * where GSettings system could look for schemas, we need to point the software to a correct location somehow.
  * For executables, we handle this using wrappers but this is not an option for libraries like e-d-s.
  * Instead, we hardcode the schema path when creating the settings.
+ * A schema path (ie org.gnome.evolution) can be replaced by @EVOLUTION_SCHEMA_PATH@
+ * which is then replaced at build time by substituteAll.
+ * The mapping is provided in a json file ./glib-schema-to-var.json
  */
 
 @initialize:python@
 @@
+import json
 
 cpp_constants = {}
 
···
 def resolve_cpp_constant(const_name):
     return cpp_constants.get(const_name, const_name)
 
-e_s_d_schema_constants = [
-    # The following are actually part of e-d-s, despite the name.
-    # We rename the old ambiguos constant name in ./prepare-for-gsettings-patching.patch
-    "\"org.gnome.Evolution.DefaultSources\"",
-    "\"org.gnome.evolution.shell.network-config\"",
-]
-
-g_d_s_schema_constants = [
-]
+with open("./glib-schema-to-var.json") as mapping_file:
+    schema_to_var = json.load(mapping_file);
 
 def get_schema_directory(schema_path):
     # Sometimes the schema id is referenced using C preprocessor #define constant in the same file
     # let’s try to resolve it first.
-    schema_path = resolve_cpp_constant(schema_path.strip())
-    if schema_path.startswith("\"org.gnome.evolution-data-server") or schema_path in e_s_d_schema_constants:
-        return "\"@EDS_GSETTINGS_PATH@\""
-    elif schema_path in g_d_s_schema_constants:
-        return "\"@GDS_GSETTINGS_PATH@\""
-    raise Exception(f"Unknown schema path {schema_path}")
+    schema_path = resolve_cpp_constant(schema_path.strip()).strip('"')
+    if schema_path in schema_to_var:
+        return f'"@{schema_to_var[schema_path]}@"'
+    raise Exception(f"Unknown schema path {schema_path!r}, please add it to ./glib-schema-to-var.json")
 
 
 @find_cpp_constants@

pkgs/desktops/gnome/core/evolution-data-server/hardcode-gsettings.patch

···
 diff --git a/src/addressbook/libebook/e-book-client.c b/src/addressbook/libebook/e-book-client.c
-index 7888e69..c3b695c 100644
+index 7888e69..27215e4 100644
 --- a/src/addressbook/libebook/e-book-client.c
 +++ b/src/addressbook/libebook/e-book-client.c
 @@ -1983,7 +1983,18 @@ e_book_client_get_self (ESourceRegistry *registry,
···
 +	{
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);
···
 +	{
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);
···
 +	if (!settings) {
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);
···
  	g_mutex_unlock (&mutex);
  
 diff --git a/src/addressbook/libebook/e-book.c b/src/addressbook/libebook/e-book.c
-index 8dfff6d..cd88392 100644
+index 8dfff6d..fb4434b 100644
 --- a/src/addressbook/libebook/e-book.c
 +++ b/src/addressbook/libebook/e-book.c
 @@ -2587,7 +2587,18 @@ e_book_get_self (ESourceRegistry *registry,
···
 +	{
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);
···
 +	{
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);
···
 +	{
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);
···
  	g_object_unref (settings);
  
 diff --git a/src/addressbook/libedata-book/e-book-meta-backend.c b/src/addressbook/libedata-book/e-book-meta-backend.c
-index d3f130e..9e8edd4 100644
+index d3f130e..bc820e9 100644
 --- a/src/addressbook/libedata-book/e-book-meta-backend.c
 +++ b/src/addressbook/libedata-book/e-book-meta-backend.c
 @@ -135,7 +135,18 @@ ebmb_is_power_saver_enabled (void)
···
 +	{
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);
···
  	if (g_settings_get_boolean (settings, "limit-operations-in-power-saver-mode")) {
  		GPowerProfileMonitor *power_monitor;
 diff --git a/src/calendar/backends/contacts/e-cal-backend-contacts.c b/src/calendar/backends/contacts/e-cal-backend-contacts.c
-index 42f3457..faac410 100644
+index 42f3457..b4926af 100644
 --- a/src/calendar/backends/contacts/e-cal-backend-contacts.c
 +++ b/src/calendar/backends/contacts/e-cal-backend-contacts.c
 @@ -1387,7 +1387,18 @@ e_cal_backend_contacts_init (ECalBackendContacts *cbc)
···
 +	{
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);
···
  	cbc->priv->update_alarms_id = 0;
  	cbc->priv->alarm_enabled = FALSE;
 diff --git a/src/calendar/libecal/e-reminder-watcher.c b/src/calendar/libecal/e-reminder-watcher.c
-index 52095a4..e839991 100644
+index 52095a4..184b657 100644
 --- a/src/calendar/libecal/e-reminder-watcher.c
 +++ b/src/calendar/libecal/e-reminder-watcher.c
 @@ -2555,7 +2555,19 @@ e_reminder_watcher_init (EReminderWatcher *watcher)
···
 +	{
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);
···
  	watcher->priv->default_zone = e_cal_util_copy_timezone (zone);
  	watcher->priv->timers_enabled = TRUE;
 diff --git a/src/calendar/libedata-cal/e-cal-meta-backend.c b/src/calendar/libedata-cal/e-cal-meta-backend.c
-index 94a875f..1f914a9 100644
+index 94a875f..1d2ed92 100644
 --- a/src/calendar/libedata-cal/e-cal-meta-backend.c
 +++ b/src/calendar/libedata-cal/e-cal-meta-backend.c
 @@ -149,7 +149,18 @@ ecmb_is_power_saver_enabled (void)
···
 +	{
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);
···
  	if (g_settings_get_boolean (settings, "limit-operations-in-power-saver-mode")) {
  		GPowerProfileMonitor *power_monitor;
 diff --git a/src/camel/camel-cipher-context.c b/src/camel/camel-cipher-context.c
-index 8013ba7..ba74769 100644
+index 8013ba7..1bba6d1 100644
 --- a/src/camel/camel-cipher-context.c
 +++ b/src/camel/camel-cipher-context.c
 @@ -1625,7 +1625,18 @@ camel_cipher_can_load_photos (void)
···
 +	{
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);
···
  	g_clear_object (&settings);
  
 diff --git a/src/camel/camel-gpg-context.c b/src/camel/camel-gpg-context.c
-index 205372e..2023704 100644
+index 205372e..f75a88e 100644
 --- a/src/camel/camel-gpg-context.c
 +++ b/src/camel/camel-gpg-context.c
 @@ -582,7 +582,18 @@ gpg_ctx_get_executable_name (void)
···
 +		{
 +			g_autoptr(GSettingsSchemaSource) schema_source;
 +			g_autoptr(GSettingsSchema) schema;
-+			schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++			schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +										    g_settings_schema_source_get_default(),
 +										    TRUE,
 +										    NULL);
···
  		g_clear_object (&settings);
  
 diff --git a/src/camel/camel-utils.c b/src/camel/camel-utils.c
-index e61160c..d17871a 100644
+index e61160c..b6553a4 100644
 --- a/src/camel/camel-utils.c
 +++ b/src/camel/camel-utils.c
 @@ -362,7 +362,19 @@ void
···
 +	{
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);
···
  		G_CALLBACK (mi_user_headers_settings_changed_cb), NULL);
  	G_UNLOCK (mi_user_headers);
 diff --git a/src/camel/providers/imapx/camel-imapx-server.c b/src/camel/providers/imapx/camel-imapx-server.c
-index e5645e2..170a0be 100644
+index e5645e2..96a1ce3 100644
 --- a/src/camel/providers/imapx/camel-imapx-server.c
 +++ b/src/camel/providers/imapx/camel-imapx-server.c
 @@ -5573,7 +5573,18 @@ camel_imapx_server_skip_old_flags_update (CamelStore *store)
···
 +		{
 +			g_autoptr(GSettingsSchemaSource) schema_source;
 +			g_autoptr(GSettingsSchema) schema;
-+			schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++			schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +										    g_settings_schema_source_get_default(),
 +										    TRUE,
 +										    NULL);
···
  		if (g_settings_get_boolean (eds_settings, "limit-operations-in-power-saver-mode")) {
  			GPowerProfileMonitor *power_monitor;
 diff --git a/src/camel/providers/smtp/camel-smtp-transport.c b/src/camel/providers/smtp/camel-smtp-transport.c
-index f535ad6..30130b9 100644
+index f535ad6..918975d 100644
 --- a/src/camel/providers/smtp/camel-smtp-transport.c
 +++ b/src/camel/providers/smtp/camel-smtp-transport.c
 @@ -1458,7 +1458,18 @@ smtp_helo (CamelSmtpTransport *transport,
···
 +	{
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);
···
  	g_clear_object (&settings);
  
 diff --git a/src/libedataserver/e-network-monitor.c b/src/libedataserver/e-network-monitor.c
-index 188f276..7c4db94 100644
+index 188f276..939f89b 100644
 --- a/src/libedataserver/e-network-monitor.c
 +++ b/src/libedataserver/e-network-monitor.c
 @@ -256,7 +256,18 @@ e_network_monitor_constructed (GObject *object)
···
 +	{
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);
···
  		settings, "network-monitor-gio-name",
  		object, "gio-name",
 diff --git a/src/libedataserver/e-oauth2-service-google.c b/src/libedataserver/e-oauth2-service-google.c
-index f215388..3b67126 100644
+index f215388..501222e 100644
 --- a/src/libedataserver/e-oauth2-service-google.c
 +++ b/src/libedataserver/e-oauth2-service-google.c
 @@ -71,7 +71,18 @@ eos_google_read_settings (EOAuth2Service *service,
···
 +		{
 +			g_autoptr(GSettingsSchemaSource) schema_source;
 +			g_autoptr(GSettingsSchema) schema;
-+			schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++			schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +										    g_settings_schema_source_get_default(),
 +										    TRUE,
 +										    NULL);
···
  		g_object_unref (settings);
  
 diff --git a/src/libedataserver/e-oauth2-service-outlook.c b/src/libedataserver/e-oauth2-service-outlook.c
-index 9cff0d0..fd95f0b 100644
+index 9cff0d0..4c9a203 100644
 --- a/src/libedataserver/e-oauth2-service-outlook.c
 +++ b/src/libedataserver/e-oauth2-service-outlook.c
 @@ -71,7 +71,18 @@ eos_outlook_read_settings (EOAuth2Service *service,
···
 +		{
 +			g_autoptr(GSettingsSchemaSource) schema_source;
 +			g_autoptr(GSettingsSchema) schema;
-+			schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++			schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +										    g_settings_schema_source_get_default(),
 +										    TRUE,
 +										    NULL);
···
  		g_object_unref (settings);
  
 diff --git a/src/libedataserver/e-oauth2-service-yahoo.c b/src/libedataserver/e-oauth2-service-yahoo.c
-index 8e4ee81..bb8f8f7 100644
+index 8e4ee81..cc94026 100644
 --- a/src/libedataserver/e-oauth2-service-yahoo.c
 +++ b/src/libedataserver/e-oauth2-service-yahoo.c
 @@ -67,7 +67,18 @@ eos_yahoo_read_settings (EOAuth2Service *service,
···
 +		{
 +			g_autoptr(GSettingsSchemaSource) schema_source;
 +			g_autoptr(GSettingsSchema) schema;
-+			schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++			schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +										    g_settings_schema_source_get_default(),
 +										    TRUE,
 +										    NULL);
···
  		g_object_unref (settings);
  
 diff --git a/src/libedataserver/e-oauth2-service.c b/src/libedataserver/e-oauth2-service.c
-index 7783781..6fb22cb 100644
+index 7783781..6a2db01 100644
 --- a/src/libedataserver/e-oauth2-service.c
 +++ b/src/libedataserver/e-oauth2-service.c
 @@ -90,7 +90,18 @@ eos_default_guess_can_process (EOAuth2Service *service,
···
 +	{
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);
···
  	g_object_unref (settings);
  
 diff --git a/src/libedataserver/e-source-registry.c b/src/libedataserver/e-source-registry.c
-index 6701a3a..6b8ee33 100644
+index 6701a3a..f497263 100644
 --- a/src/libedataserver/e-source-registry.c
 +++ b/src/libedataserver/e-source-registry.c
 @@ -1764,7 +1764,19 @@ e_source_registry_init (ESourceRegistry *registry)
···
 +	{
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);
···
  	g_signal_connect (
  		registry->priv->settings, "changed",
 diff --git a/src/libedataserverui/e-reminders-widget.c b/src/libedataserverui/e-reminders-widget.c
-index 14b6481..6dc55bb 100644
+index 14b6481..7149b74 100644
 --- a/src/libedataserverui/e-reminders-widget.c
 +++ b/src/libedataserverui/e-reminders-widget.c
 @@ -1986,7 +1986,19 @@ static void
···
 +	{
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);
···
  	reminders->priv->is_empty = TRUE;
  	reminders->priv->is_mapped = FALSE;
 diff --git a/src/services/evolution-source-registry/evolution-source-registry-autoconfig.c b/src/services/evolution-source-registry/evolution-source-registry-autoconfig.c
-index 6f03053..127c92e 100644
+index 6f03053..b5db6b2 100644
 --- a/src/services/evolution-source-registry/evolution-source-registry-autoconfig.c
 +++ b/src/services/evolution-source-registry/evolution-source-registry-autoconfig.c
 @@ -706,7 +706,18 @@ evolution_source_registry_merge_autoconfig_sources (ESourceRegistryServer *serve
···
 +	{
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);
···
  	autoconfig_sources = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, e_autoconfig_free_merge_source_data);
  
 diff --git a/src/services/evolution-source-registry/evolution-source-registry-migrate-proxies.c b/src/services/evolution-source-registry/evolution-source-registry-migrate-proxies.c
-index d531cb9..3d8807c 100644
+index d531cb9..c96f1d5 100644
 --- a/src/services/evolution-source-registry/evolution-source-registry-migrate-proxies.c
 +++ b/src/services/evolution-source-registry/evolution-source-registry-migrate-proxies.c
 @@ -61,7 +61,18 @@ evolution_source_registry_migrate_proxies (ESourceRegistryServer *server)
···
 +	{
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);
···
  	switch (g_settings_get_int (settings, "proxy-type")) {
  		case 1:
 diff --git a/src/services/evolution-source-registry/evolution-source-registry.c b/src/services/evolution-source-registry/evolution-source-registry.c
-index 1c0a113..d26b059 100644
+index 1c0a113..6b41423 100644
 --- a/src/services/evolution-source-registry/evolution-source-registry.c
 +++ b/src/services/evolution-source-registry/evolution-source-registry.c
 @@ -181,7 +181,18 @@ main (gint argc,
···
 +	{
 +		g_autoptr(GSettingsSchemaSource) schema_source;
 +		g_autoptr(GSettingsSchema) schema;
-+		schema_source = g_settings_schema_source_new_from_directory("@EDS_GSETTINGS_PATH@",
++		schema_source = g_settings_schema_source_new_from_directory("@EDS@",
 +									    g_settings_schema_source_get_default(),
 +									    TRUE,
 +									    NULL);

pkgs/development/libraries/glib/default.nix

···
 , coreutils, dbus, libxml2, tzdata
 , desktop-file-utils, shared-mime-info
 , darwin
+# update script
+, runCommand, git, coccinelle
 }:
 
 assert stdenv.isLinux -> util-linuxMinimal != null;
···
       packageName = "glib";
       versionPolicy = "odd-unstable";
     };
+    /*
+      can be used as part of an update script to automatically create a patch
+      hardcoding the path of all gsettings schemas in C code.
+      For example:
+      passthru = {
+        hardcodeGsettingsPatch = glib.mkHardcodeGsettingsPatch {
+          inherit src;
+          glib-schema-to-var = {
+             ...
+          };
+        };
+
+        updateScript =
+          let
+            updateSource = ...;
+            patch = _experimental-update-script-combinators.copyAttrOutputToFile "evolution-ews.hardcodeGsettingsPatch" ./hardcode-gsettings.patch;
+          in
+          _experimental-update-script-combinators.sequence [
+            updateSource
+            patch
+          ];
+        };
+      }
+      takes as input a mapping from schema path to variable name.
+      For example `{ "org.gnome.evolution" = "EVOLUTION_SCHEMA_PATH"; }`
+      hardcodes looking for `org.gnome.evolution` into `@EVOLUTION_SCHEMA_PATH@`.
+      All schemas must be listed.
+    */
+    mkHardcodeGsettingsPatch = { src, glib-schema-to-var }:
+      runCommand
+        "hardcode-gsettings.patch"
+        {
+          inherit src;
+          nativeBuildInputs = [
+            git
+            coccinelle
+            python3 # For patch script
+          ];
+        }
+        ''
+          unpackPhase
+          cd "''${sourceRoot:-.}"
+          set -x
+          cp ${builtins.toFile "glib-schema-to-var.json" (builtins.toJSON glib-schema-to-var)} ./glib-schema-to-var.json
+          git init
+          git add -A
+          spatch --sp-file "${./hardcode-gsettings.cocci}" --dir . --in-place
+          git diff > "$out"
+        '';
   };
 
   meta = with lib; {