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

third_party/bazel/rules_haskell/tests/external-haskell-repository/BUILD.bazel

@@ -0,0 +1,17 @@
+# Tests correct linking of haskell packages that were created
+# in a different bazel repository, e.g. with hazel.
+
+load(
+    "@io_tweag_rules_haskell//haskell:haskell.bzl",
+    "haskell_test",
+)
+
+haskell_test(
+    name = "external-haskell-repository",
+    srcs = ["Main.hs"],
+    visibility = ["//visibility:public"],
+    deps = [
+        "//tests/hackage:base",
+        "@haskell_package_repository_dummy//:library-with-cbits",
+    ],
+)