ci/eval: don't evaluate packages marked as broken

We really can't expect packages that are marked as broken to evaluate,
and *especially* not on unsupported platforms.

For context, we were attempting to eval them *past* the broken throw
previously, which caused fun side effects like [0].

When we set `includeBroken = true` before, this also included unfree
packages. Those would now be excluded, which is not what we want. Thus,
we explicitly enable them separately.

Commit by winterqt, message slightly reworded by wolfgangwalther.

[0]:
https://github.com/NixOS/nixpkgs/issues/355847#issuecomment-2878873137

ci/eval/default.nix

@@ -73,7 +73,9 @@ let
       # The number of attributes per chunk, see ./README.md for more info.
       chunkSize,
       checkMeta ? true,
-      includeBroken ? true,
+
+      # Don't try to eval packages marked as broken.
+      includeBroken ? false,
       # Whether to just evaluate a single chunk for quick testing
       quickTest ? false,
     }:

pkgs/top-level/release-outpaths.nix

@@ -27,7 +27,7 @@ let
           config = {
             allowAliases = false;
             allowBroken = includeBroken;
-            allowUnfree = false;
+            allowUnfree = true;
             allowInsecurePredicate = x: true;
             checkMeta = checkMeta;