maintainers/scripts/haskell: add script to find broken maintained packages

maintainers/scripts/haskell/maintained-broken-pkgs.nix

@@ -0,0 +1,22 @@
+let
+  nixpkgs = import ../../..;
+  inherit (nixpkgs {}) haskellPackages lib;
+  maintainedPkgs = lib.filterAttrs (
+    _: v: builtins.length (v.meta.maintainers or []) > 0
+  ) haskellPackages;
+  brokenPkgs = lib.filterAttrs (_: v: v.meta.broken) maintainedPkgs;
+  transitiveBrokenPkgs = lib.filterAttrs
+    (_: v: !(builtins.tryEval (v.outPath or null)).success && !v.meta.broken)
+    maintainedPkgs;
+  infoList = pkgs: lib.concatStringsSep "\n" (lib.mapAttrsToList (name: drv: "${name} ${(builtins.elemAt drv.meta.maintainers 0).github}") pkgs);
+in {
+  report = ''
+    BROKEN:
+    ${infoList brokenPkgs}
+
+    TRANSITIVE BROKEN:
+    ${infoList transitiveBrokenPkgs}
+  '';
+  transitiveErrors =
+    builtins.attrValues transitiveBrokenPkgs;
+}