greetd: remove deprecated attrs, fix license (+ some greeters' licenses) (#503844)

pkgs/by-name/gr/greetd/package.nix

@@ -1,18 +1,11 @@
 {
   rustPlatform,
   lib,
-  config,
   fetchFromSourcehut,
   pam,
   scdoc,
   installShellFiles,
   nix-update-script,
-  # legacy passthrus
-  gtkgreet,
-  qtgreet,
-  regreet,
-  tuigreet,
-  wlgreet,
 }:
 
 rustPlatform.buildRustPackage (finalAttrs: {
@@ -45,26 +38,7 @@ rustPlatform.buildRustPackage (finalAttrs: {
     installManPage man/*
   '';
 
-  # Added 2025-07-23. To be deleted on 26.05
-  passthru =
-    let
-      warnPassthru = name: lib.warnOnInstantiate "`greetd.${name}` was renamed to `${name}`";
-    in
-    lib.mapAttrs warnPassthru (
-      lib.optionalAttrs config.allowAliases {
-        inherit
-          gtkgreet
-          qtgreet
-          regreet
-          tuigreet
-          wlgreet
-          ;
-        greetd = finalAttrs.finalPackage;
-      }
-    )
-    // {
-      updateScript = nix-update-script { };
-    };
+  passthru.updateScript = nix-update-script { };
 
   meta = {
     description = "Minimal and flexible login manager daemon";
@@ -75,7 +49,7 @@ rustPlatform.buildRustPackage (finalAttrs: {
     '';
     homepage = "https://sr.ht/~kennylevinsen/greetd/";
     mainProgram = "greetd";
-    license = lib.licenses.gpl3Plus;
+    license = lib.licenses.gpl3Only;
     maintainers = [ ];
     platforms = lib.platforms.linux;
   };

pkgs/by-name/gt/gtkgreet/package.nix

@@ -60,7 +60,7 @@ stdenv.mkDerivation (finalAttrs: {
   meta = {
     description = "GTK based greeter for greetd, to be run under cage or similar";
     homepage = "https://git.sr.ht/~kennylevinsen/gtkgreet";
-    license = lib.licenses.gpl3Plus;
+    license = lib.licenses.gpl3Only;
     maintainers = [ ];
     platforms = lib.platforms.linux;
     mainProgram = "gtkgreet";

pkgs/by-name/wl/wlgreet/package.nix

@@ -37,7 +37,7 @@ rustPlatform.buildRustPackage (finalAttrs: {
     description = "Raw wayland greeter for greetd, to be run under sway or similar";
     mainProgram = "wlgreet";
     homepage = "https://git.sr.ht/~kennylevinsen/wlgreet";
-    license = lib.licenses.gpl3Plus;
+    license = lib.licenses.gpl3Only;
     maintainers = [ ];
     platforms = lib.platforms.linux;
   };