diff --git a/pkgs/development/libraries/gtkmm/2.x.nix b/pkgs/by-name/gt/gtkmm2/package.nix
similarity index 100%
rename from pkgs/development/libraries/gtkmm/2.x.nix
rename to pkgs/by-name/gt/gtkmm2/package.nix
diff --git a/pkgs/development/libraries/gtkmm/3.x.nix b/pkgs/by-name/gt/gtkmm3/package.nix
similarity index 100%
rename from pkgs/development/libraries/gtkmm/3.x.nix
rename to pkgs/by-name/gt/gtkmm3/package.nix
diff --git a/pkgs/development/libraries/gtkmm/4.x.nix b/pkgs/by-name/gt/gtkmm4/package.nix
similarity index 100%
rename from pkgs/development/libraries/gtkmm/4.x.nix
rename to pkgs/by-name/gt/gtkmm4/package.nix
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 67d586801fac..6545a0727f87 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7002,10 +7002,6 @@ with pkgs;
     x11Support = true;
   };
 
-  gtkmm2 = callPackage ../development/libraries/gtkmm/2.x.nix { };
-  gtkmm3 = callPackage ../development/libraries/gtkmm/3.x.nix { };
-  gtkmm4 = callPackage ../development/libraries/gtkmm/4.x.nix { };
-
   gtk-sharp-2_0 = callPackage ../development/libraries/gtk-sharp/2.0.nix { };
 
   gtk-sharp-3_0 = callPackage ../development/libraries/gtk-sharp/3.0.nix { };