Merge pull request #5793 from mboes/inline-r

Re-add HaskellR (inline-r and H)

build-constraints.yaml

@@ -2230,15 +2230,14 @@ packages:
         - fn
 
     "Mathieu Boespflug <mboes@tweag.net> @mboes":
-        - cassette < 0 # build failure with GHC 8.4
         - choice
         - distributed-closure
         - inline-java < 0
-        - inline-r < 0 # via inline-c
+        - inline-r
         - jni < 0 # compilation failure
         - jvm < 0 # transitive compilation failure
         - jvm-streaming < 0
-        - H < 0 # via inline-r
+        - H
         - sparkle < 0
         - th-lift