release{,-8.2}.nix: disable ihaskell-widgets by default

This module takes an incredibly long time to compile and I haven't
missed it. If needed, it can be enabled with e.g.
`--arg packages '(p: [ p.ihaskell-widgets ])'`.

release-8.2.nix

@@ -130,7 +130,7 @@ let
     ihaskell-plot
     # ihaskell-rlangqq
     ihaskell-static-canvas
-    ihaskell-widgets
+    # ihaskell-widgets
   ] ++ packages self);
   jupyter = nixpkgs.python3.buildEnv.override {
     extraLibs = with nixpkgs; [ python3Packages.jupyter python3Packages.notebook ];

release.nix

@@ -87,7 +87,7 @@ let
     ihaskell-plot
     # ihaskell-rlangqq
     ihaskell-static-canvas
-    ihaskell-widgets
+    # ihaskell-widgets
   ] ++ packages self);
   jupyter = nixpkgs.python3.buildEnv.override {
     extraLibs = let ps = nixpkgs.python3Packages; in [ ps.jupyter ps.notebook ];