remove spec-discovery, comment out spec-quickcheck in packages.dhall

packages.dhall

@@ -109,19 +109,29 @@ let additions =
 -}
 
 let mkPackage =
-      https://raw.githubusercontent.com/spacchetti/spacchetti/20181209/src/mkPackage.dhall sha256:8e1c6636f8a089f972b21cde0cef4b33fa36a2e503ad4c77928aabf92d2d4ec9
+      https://raw.githubusercontent.com/purescript/package-sets/psc-0.12.4-20190413/src/mkPackage.dhall sha256:0b197efa1d397ace6eb46b243ff2d73a3da5638d8d0ac8473e8e4a8fc528cf57
 
 let upstream =
-      https://raw.githubusercontent.com/spacchetti/spacchetti/20181209/src/packages.dhall sha256:c63285af67ae74feb2f6eb67521712441928d2726ea10e2040774849ca765027
+      https://raw.githubusercontent.com/purescript/package-sets/psc-0.12.4-20190413/src/packages.dhall sha256:a63cc6dbd2190cc4d4f898e4db59281e4bbd09a022de6036e379bc991e23e705
 
 let overrides = {=}
 
 let additions =
-  { undefinable =
-    mkPackage
-      [ "functions", "maybe" ]
-      "https://github.com/ethul/purescript-undefinable.git"
-      "v4.0.0"
-  }
-
-in  upstream ⫽ overrides ⫽ additions
+      { spec-mocha =
+	      mkPackage
+		  [ "console", "foldable-traversable", "exceptions", "spec" ]
+		  "https://github.com/purescript-spec/purescript-spec-mocha"
+		  "v3.0.0"
+      -- , spec-quickcheck =
+      --     mkPackage
+      --     [ "prelude", "aff", "random", "quickcheck", "spec" ]
+      --     "https://github.com/purescript-spec/purescript-spec-quickcheck"
+      --     "v3.1.0"
+      , undefinable =
+          mkPackage
+          [ "functions", "maybe" ]
+          "https://github.com/ethul/purescript-undefinable.git"
+          "v4.0.0"
+      }
+
+in  upstream // overrides // additions