Merge pull request #60393 from Infinisil/leksah

leksah: Point to upstream repository for using it

pkgs/development/tools/haskell/leksah/default.nix

@@ -1,21 +0,0 @@
-{ stdenv, ghcWithPackages, gtk3, makeWrapper }:
-
-let
-leksahEnv = ghcWithPackages (self: [ self.leksah-server self.leksah self.cabal-install ]);
-in stdenv.mkDerivation {
-  name = "leksah-${leksahEnv.version}";
-
-  buildInputs = [ gtk3 ];
-  nativeBuildInputs = [ makeWrapper ];
-
-  buildCommand = ''
-    mkdir -p $out/bin
-    makeWrapper ${leksahEnv}/bin/leksah $out/bin/leksah \
-      --prefix PATH : "${leksahEnv}/bin" \
-      --prefix XDG_DATA_DIRS : "$GSETTINGS_SCHEMAS_PATH"
-  '';
-
-  meta = {
-    broken = true; # 2018-09-13, no successful hydra build since 2017-08-19
-  };
-}