Merge pull request #3894 from mstksg/one-liner

Adding back in one-liner

build-constraints.yaml

@@ -1835,10 +1835,7 @@ packages:
         - auto
         - backprop
         - configurator-export
-        - hamilton
-        - hmatrix-backprop
-        - hmatrix-vector-sized
-        - one-liner-instances < 0 # via one-liner
+        - one-liner-instances
         - prompt
         - tagged-binary
         # - type-combinators-singletons # GHC 8.4 via type-combinators
@@ -3565,8 +3562,6 @@ packages:
     # be removed from this list if they are fixed.
     "Unmaintained packages with compilation failures":
         - stackage-types < 0
-        - one-liner < 0 # via contravariant-1.5
-        - unfoldable < 0 # via one-liner
 
      # If you want to make sure a package is removed from stackage,
      # place it here with a `< 0` constraint and send a pull