diff --git a/gnu/packages/patches/gtk2-respect-GUIX_GTK2_PATH.patch b/gnu/packages/patches/gtk2-respect-GUIX_GTK2_PATH.patch
index 93a8ddc242..fb6c7809f9 100644
--- a/gnu/packages/patches/gtk2-respect-GUIX_GTK2_PATH.patch
+++ b/gnu/packages/patches/gtk2-respect-GUIX_GTK2_PATH.patch
@@ -1,46 +1,20 @@
-This patch makes GTK+ look for additional modules in a list of directories
-specified by the environment variable "GUIX_GTK2_PATH".  This can be used
-instead of "GTK_PATH" to make GTK+ find modules that are incompatible with
-other major versions of GTK+.
+diff --git a/gtk/gtkmodules.c b/gtk/gtkmodules.c
+index 50729b61a5..2d4c2c2a85 100644
+--- a/gtk/gtkmodules.c
++++ b/gtk/gtkmodules.c
+@@ -96,5 +96,15 @@ get_module_path (void)
+   result = pango_split_file_list (module_path);
+   g_free (module_path);
 
---- a/gtk/gtkmodules.c	2014-09-29 22:02:17.000000000 +0200
-+++ b/gtk/gtkmodules.c	2015-12-02 18:41:53.306396938 +0100
-@@ -55,6 +55,7 @@
- get_module_path (void)
- {
-   const gchar *module_path_env;
-+  const gchar *module_guix_gtk2_path_env;
-   const gchar *exe_prefix;
-   const gchar *home_dir;
-   gchar *home_gtk_dir = NULL;
-@@ -70,6 +71,7 @@
-     home_gtk_dir = g_build_filename (home_dir, ".gtk-2.0", NULL);
- 
-   module_path_env = g_getenv ("GTK_PATH");
-+  module_guix_gtk2_path_env = g_getenv ("GUIX_GTK2_PATH");
-   exe_prefix = g_getenv ("GTK_EXE_PREFIX");
- 
-   if (exe_prefix)
-@@ -77,9 +79,21 @@
-   else
-     default_dir = g_build_filename (GTK_LIBDIR, "gtk-2.0", NULL);
- 
--  if (module_path_env && home_gtk_dir)
-+  if (module_guix_gtk2_path_env && module_path_env && home_gtk_dir)
-+    module_path = g_build_path (G_SEARCHPATH_SEPARATOR_S,
-+				module_guix_gtk2_path_env, module_path_env, home_gtk_dir, default_dir, NULL);
-+  else if (module_guix_gtk2_path_env && home_gtk_dir)
-+    module_path = g_build_path (G_SEARCHPATH_SEPARATOR_S,
-+				module_guix_gtk2_path_env, home_gtk_dir, default_dir, NULL);
-+  else if (module_guix_gtk2_path_env && module_path_env)
-+    module_path = g_build_path (G_SEARCHPATH_SEPARATOR_S,
-+				module_guix_gtk2_path_env, module_path_env, default_dir, NULL);
-+  else if (module_path_env && home_gtk_dir)
-     module_path = g_build_path (G_SEARCHPATH_SEPARATOR_S,
- 				module_path_env, home_gtk_dir, default_dir, NULL);
-+  else if (module_guix_gtk2_path_env)
-+    module_path = g_build_path (G_SEARCHPATH_SEPARATOR_S,
-+				module_guix_gtk2_path_env, default_dir, NULL);
-   else if (module_path_env)
-     module_path = g_build_path (G_SEARCHPATH_SEPARATOR_S,
- 				module_path_env, default_dir, NULL);
++  /* GUIX: Load additional modules from GUIX_GTK2_PATH. */
++  GStrvBuilder *builder = g_strv_builder_new ();
++  g_strv_builder_addv (builder, (const gchar **) result);
++  g_strfreev (result);
++  result = g_build_guix_search_path_dirs ("GUIX_GTK2_PATH");
++  g_strv_builder_addv (builder, (const gchar **) result);
++  g_strfreev (result);
++  result = g_strv_builder_end (builder);
++  g_strv_builder_unref (builder);
++
+   return result;
+ }
diff --git a/gnu/packages/patches/gtk3-respect-GUIX_GTK3_PATH.patch b/gnu/packages/patches/gtk3-respect-GUIX_GTK3_PATH.patch
index 66fd2fd1c4..28e232a812 100644
--- a/gnu/packages/patches/gtk3-respect-GUIX_GTK3_PATH.patch
+++ b/gnu/packages/patches/gtk3-respect-GUIX_GTK3_PATH.patch
@@ -1,38 +1,21 @@
-This patch makes GTK+ look for additional modules in a list of directories
-specified by the environment variable "GUIX_GTK3_PATH".  This can be used
-instead of "GTK_PATH" to make GTK+ find modules that are incompatible with
-other major versions of GTK+.
-
---- a/gtk/gtkmodules.c	2015-09-20 20:09:05.060590217 +0200
-+++ b/gtk/gtkmodules.c	2015-09-20 20:10:33.423124833 +0200
-@@ -52,6 +52,7 @@
- get_module_path (void)
- {
-   const gchar *module_path_env;
-+  const gchar *module_guix_gtk3_path_env;
-   const gchar *exe_prefix;
-   gchar *module_path;
-   gchar *default_dir;
-@@ -61,6 +62,7 @@
-     return result;
+diff --git a/gtk/gtkmodules.c b/gtk/gtkmodules.c
+index f93101c272..b57e1da802 100644
+--- a/gtk/gtkmodules.c
++++ b/gtk/gtkmodules.c
+@@ -81,6 +81,16 @@ get_module_path (void)
+   result = gtk_split_file_list (module_path);
+   g_free (module_path);
  
-   module_path_env = g_getenv ("GTK_PATH");
-+  module_guix_gtk3_path_env = g_getenv ("GUIX_GTK3_PATH");
-   exe_prefix = g_getenv ("GTK_EXE_PREFIX");
++  /* GUIX: Load additional modules from GUIX_GTK3_PATH. */
++  GStrvBuilder *builder = g_strv_builder_new ();
++  g_strv_builder_addv (builder, (const gchar **) result);
++  g_strfreev (result);
++  result = g_build_guix_search_path_dirs ("GUIX_GTK3_PATH");
++  g_strv_builder_addv (builder, (const gchar **) result);
++  g_strfreev (result);
++  result = g_strv_builder_end (builder);
++  g_strv_builder_unref (builder);
++
+   return result;
+ }
  
-   if (exe_prefix)
-@@ -68,7 +70,13 @@
-   else
-     default_dir = g_build_filename (_gtk_get_libdir (), "gtk-3.0", NULL);
- 
--  if (module_path_env)
-+  if (module_guix_gtk3_path_env && module_path_env)
-+    module_path = g_build_path (G_SEARCHPATH_SEPARATOR_S,
-+				module_guix_gtk3_path_env, module_path_env, default_dir, NULL);
-+  else if (module_guix_gtk3_path_env)
-+    module_path = g_build_path (G_SEARCHPATH_SEPARATOR_S,
-+				module_guix_gtk3_path_env, default_dir, NULL);
-+  else if (module_path_env)
-     module_path = g_build_path (G_SEARCHPATH_SEPARATOR_S,
- 				module_path_env, default_dir, NULL);
-   else
diff --git a/gnu/packages/patches/gtk4-respect-GUIX_GTK4_PATH.patch b/gnu/packages/patches/gtk4-respect-GUIX_GTK4_PATH.patch
index 4a60023bf7..56c202ecf4 100644
--- a/gnu/packages/patches/gtk4-respect-GUIX_GTK4_PATH.patch
+++ b/gnu/packages/patches/gtk4-respect-GUIX_GTK4_PATH.patch
@@ -1,51 +1,21 @@
-From 889294a93fc6464c2c2919bc47f6fd85ec823363 Mon Sep 17 00:00:00 2001
-From: Raghav Gururajan <rg@raghavgururajan.name>
-Date: Tue, 18 May 2021 19:57:00 -0400
-Subject: [PATCH] [PATCH]: Honor GUIX_GTK4_PATH.
-
-This patch makes GTK look for additional modules in a list of directories
-specified by the environment variable "GUIX_GTK4_PATH". This can be used
-instead of "GTK_PATH" to make GTK find modules that are incompatible with
-other major versions of GTK.
----
- gtk/gtkmodules.c | 10 +++++++++-
- 1 file changed, 9 insertions(+), 1 deletion(-)
-
 diff --git a/gtk/gtkmodules.c b/gtk/gtkmodules.c
-index aace5dcbc9..193b6a02e9 100644
+index 51b0916624..0cd6ee7e30 100644
 --- a/gtk/gtkmodules.c
 +++ b/gtk/gtkmodules.c
-@@ -105,6 +105,7 @@ static char **
- get_module_path (void)
- {
-   const char *module_path_env;
-+  const gchar *module_guix_gtk4_path_env;
-   const char *exe_prefix;
-   char *module_path;
-   char *default_dir;
-@@ -114,6 +115,7 @@ get_module_path (void)
-     return result;
+@@ -132,6 +132,16 @@ get_module_path (void)
+   result = split_file_list (module_path);
+   g_free (module_path);
  
-   module_path_env = g_getenv ("GTK_PATH");
-+  module_guix_gtk4_path_env = g_getenv ("GUIX_GTK4_PATH");
-   exe_prefix = g_getenv ("GTK_EXE_PREFIX");
++  /* GUIX: Load additional modules from GUIX_GTK4_PATH. */
++  GStrvBuilder *builder = g_strv_builder_new ();
++  g_strv_builder_addv (builder, (const gchar **) result);
++  g_strfreev (result);
++  result = g_build_guix_search_path_dirs ("GUIX_GTK4_PATH");
++  g_strv_builder_addv (builder, (const gchar **) result);
++  g_strfreev (result);
++  result = g_strv_builder_end (builder);
++  g_strv_builder_unref (builder);
++
+   return result;
+ }
  
-   if (exe_prefix)
-@@ -121,7 +123,13 @@ get_module_path (void)
-   else
-     default_dir = g_build_filename (_gtk_get_libdir (), "gtk-4.0", NULL);
- 
--  if (module_path_env)
-+  if (module_guix_gtk4_path_env && module_path_env)
-+    module_path = g_build_path (G_SEARCHPATH_SEPARATOR_S,
-+				module_guix_gtk4_path_env, module_path_env, default_dir, NULL);
-+  else if (module_guix_gtk4_path_env)
-+    module_path = g_build_path (G_SEARCHPATH_SEPARATOR_S,
-+				module_guix_gtk4_path_env, default_dir, NULL);
-+  else if (module_path_env)
-     module_path = g_build_path (G_SEARCHPATH_SEPARATOR_S,
- 				module_path_env, default_dir, NULL);
-   else
--- 
-2.31.1
-
