Merge pull request #1550 from phadej/ghc-8.0-packages

Re-enable postgresql-simple-url, waitra, purescript and arithmoi

build-constraints.yaml

@@ -981,17 +981,17 @@ packages:
         - JuicyPixels-scale-dct
         - lattices
         - monad-http
-        # GHC 8 - postgresql-simple-url
+        - postgresql-simple-url
         - range-set-list
         - regex-applicative-text
         - servant-yaml
         - spdx
         - these
         # GHC 8 - time-parsers
-        # GHC 8 - waitra
+        - waitra
 
         # Not a maintainer
-        # GHC 8 - arithmoi
+        - arithmoi
         - hashable
         # GHC 8 - haxl
         - monad-time
@@ -1018,7 +1018,7 @@ packages:
         - bower-json
         - boxes
         - pattern-arrows
-        # GHC 8 - purescript
+        - purescript
 
         # Universe
         - universe
@@ -2660,9 +2660,6 @@ expected-test-failures:
     # https://github.com/kazu-yamamoto/logger/issues/42
     - wai-logger
 
-    # https://github.com/purescript/purescript/issues/1336
-    - purescript
-
     # https://github.com/fpco/stackage/issues/733
     - ide-backend