feat(third_party/bazel): Check in rules_haskell from Tweag

third_party/bazel/rules_haskell/tests/repl-name-conflicts/BUILD.bazel

@@ -0,0 +1,15 @@
+load("@io_tweag_rules_haskell//haskell:haskell.bzl", "haskell_library")
+
+package(default_testonly = 1)
+
+# The module in this library hides a lot of identifiers from Prelude and other
+# modules used in the repl init script.
+# This shouldn't break the @repl target
+haskell_library(
+    name = "lib",
+    srcs = ["PreludeShadowing.hs"],
+    deps = [
+        "//tests/hackage:base",
+        "//tests/hackage:bytestring",
+    ],
+)

third_party/bazel/rules_haskell/tests/repl-name-conflicts/PreludeShadowing.hs

@@ -0,0 +1,12 @@
+{-# LANGUAGE NoImplicitPrelude #-}
+{-# LANGUAGE OverloadedStrings #-}
+
+module PreludeShadowing where
+
+import           Data.ByteString
+
+(>>=) :: ByteString -> ByteString -> ByteString
+_ >>= _ = "blah"
+
+stdin :: ByteString
+stdin = "stdin"