gtksourceview: drop unversioned alias

Having the older ABI version as the default seems odd and the different
gtksourceview packages appear to be fundamentally incompatible, so drop
the unsuffixed version similar to webkitgtk and as discussed in [1].

[1] https://github.com/NixOS/nixpkgs/pull/543345#issuecomment-5199018730

pkgs/applications/audio/quodlibet/default.nix

@@ -16,7 +16,7 @@
   glib,
   glib-networking,
   gtk3,
-  gtksourceview,
+  gtksourceview3,
   kakasi,
   keybinder3,
   libappindicator,
@@ -89,7 +89,7 @@ python3.pkgs.buildPythonApplication (finalAttrs: {
     glib
     glib-networking
     gtk3
-    gtksourceview
+    gtksourceview3
     kakasi
     keybinder3
     libappindicator

pkgs/by-name/de/denemo/package.nix

@@ -15,7 +15,7 @@
   libsndfile,
   aubio,
   gtk3,
-  gtksourceview,
+  gtksourceview3,
   evince,
   fluidsynth,
   rubberband,
@@ -47,7 +47,7 @@ stdenv.mkDerivation (finalAttrs: {
     libsndfile
     aubio
     gtk3
-    gtksourceview
+    gtksourceview3
     evince
     fluidsynth
     rubberband

pkgs/by-name/lu/lutris/package.nix

@@ -18,7 +18,7 @@ let
   gnomeDeps =
     pkgs: with pkgs; [
       zenity
-      gtksourceview
+      gtksourceview3
       gnome-desktop
       libgnome-keyring
       webkitgtk_4_1

pkgs/by-name/ma/marker/package.nix

@@ -8,7 +8,7 @@
   pkg-config,
   wrapGAppsHook3,
   gtk3,
-  gtksourceview,
+  gtksourceview3,
   gtkspell3,
   webkitgtk_4_1,
   pandoc,
@@ -41,7 +41,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildInputs = [
     gtk3
-    gtksourceview
+    gtksourceview3
     gtkspell3
     webkitgtk_4_1
     pandoc

pkgs/by-name/re/rednotebook/package.nix

@@ -6,7 +6,7 @@
   glib,
   gobject-introspection,
   gtk3,
-  gtksourceview,
+  gtksourceview3,
   pango,
   webkitgtk_4_1,
 }:
@@ -34,7 +34,7 @@ python3Packages.buildPythonApplication (finalAttrs: {
     gdk-pixbuf
     glib
     gtk3
-    gtksourceview
+    gtksourceview3
     pango
     webkitgtk_4_1
   ]

pkgs/by-name/ya/yad/package.nix

@@ -8,7 +8,7 @@
   gettext,
   gspell,
   gtk3,
-  gtksourceview,
+  gtksourceview3,
   libappindicator,
   netpbm,
   webkitgtk_4_1,
@@ -40,7 +40,7 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [
     gspell
     gtk3
-    gtksourceview
+    gtksourceview3
     libappindicator
     webkitgtk_4_1
   ];

pkgs/development/ocaml-modules/lablgtk3/sourceview3.nix

@@ -1,12 +1,12 @@
 {
   buildDunePackage,
-  gtksourceview,
+  gtksourceview3,
   lablgtk3,
 }:
 
 buildDunePackage {
   pname = "lablgtk3-sourceview3";
-  buildInputs = lablgtk3.buildInputs ++ [ gtksourceview ];
+  buildInputs = lablgtk3.buildInputs ++ [ gtksourceview3 ];
   propagatedBuildInputs = [ lablgtk3 ];
   inherit (lablgtk3)
     src

pkgs/top-level/aliases.nix

@@ -1109,6 +1109,7 @@ mapAliases {
   gtklp = throw "'gtklp' has been removed, as it depended on GTK 2. Consider using 'system-config-printer' instead."; # Added 2026-05-22
   gtkmm2 = throw "'gtkmm2' has been removed as it depended on the deprecated gtk2. Consider using 'gtkmm3' or 'gtkmm4' instead."; # Added 2026-08-09
   gtkradiant = throw "'gtkradiant' has been removed, as it relies on gtk2"; # Added 2026-06-18
+  gtksourceview = throw "'gtksourceview' attribute has been removed from nixpkgs. Use a 'gtksourceview*' attribute with an explicit ABI version instead."; # Added 2026-09-04
   gtkspell2 = throw "'gtkspell2' has been removed as it depended on the deprecated GTK2 engine. Consider using 'gtkspell3' instead"; # Added 2026-07-23
   gtuber = throw "'gtuber' has been removed due to being discontinued by upstream."; # Added 2025-12-12
   gui-for-clash = throw "'gui-for-clash' has been removed, as it is unmaintained"; # Added 2026-05-28

pkgs/top-level/all-packages.nix

@@ -5795,8 +5795,6 @@ with pkgs;
 
   gtk-mac-integration-gtk3 = gtk-mac-integration;
 
-  gtksourceview = gtksourceview3;
-
   gtksourceview3 = callPackage ../development/libraries/gtksourceview/3.x.nix { };
 
   gtksourceview4 = callPackage ../development/libraries/gtksourceview/4.x.nix { };
@@ -9052,7 +9050,7 @@ with pkgs;
   };
 
   quodlibet-full = quodlibet.override {
-    inherit gtksourceview;
+    inherit gtksourceview3;
     kakasi = kakasi;
     keybinder3 = keybinder3;
     libappindicator = libappindicator;