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

third_party/bazel/rules_haskell/tests/java_classpath/BUILD.bazel

@@ -0,0 +1,17 @@
+load(
+    "@io_tweag_rules_haskell//haskell:haskell.bzl",
+    "haskell_test",
+)
+
+package(default_testonly = 1)
+
+haskell_test(
+    name = "java_classpath",
+    srcs = ["Main.hs"],
+    visibility = ["//visibility:public"],
+    deps = [
+        "//tests/hackage:base",
+        "//tests/hackage:template-haskell",
+        "@org_apache_spark_spark_core_2_10//jar",
+    ],
+)