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

third_party/bazel/rules_haskell/tests/haddock/BUILD.bazel

@@ -0,0 +1,73 @@
+load(
+    "@io_tweag_rules_haskell//haskell:haskell.bzl",
+    "haskell_doc",
+    "haskell_library",
+    "haskell_toolchain_library",
+)
+
+package(
+    default_testonly = 1,
+    default_visibility = ["//visibility:public"],
+)
+
+haskell_library(
+    name = "haddock-lib-deep",
+    srcs = ["Deep.hsc"],
+    deps = ["//tests/hackage:base"],
+)
+
+haskell_library(
+    name = "haddock-lib-a",
+    srcs = [
+        "LibA.hs",
+        "LibA/A.hs",
+        "header.h",
+    ],
+    compiler_flags = ["-I."],
+    deps = [
+        ":haddock-lib-deep",
+        "//tests/hackage:base",
+        "//tests/hackage:template-haskell",
+    ],
+)
+
+haskell_toolchain_library(
+    name = "haddock-lib-c",
+    package = "libc",
+)
+
+haskell_library(
+    name = "haddock-lib-b",
+    srcs = [
+        "LibB.hs",
+        "TH.hs",
+    ],
+    extra_srcs = [
+        "unicode.txt",
+    ],
+    tags = [
+        "requires_hackage",
+        "requires_zlib",
+    ],
+    deps = [
+        ":haddock-lib-a",
+        "//tests/hackage:base",
+        "//tests/hackage:template-haskell",
+        "@hackage//:libc",
+        "@zlib",
+    ],
+)
+
+haskell_doc(
+    name = "haddock",
+    index_transitive_deps = False,
+    tags = ["requires_hackage"],
+    deps = [":haddock-lib-b"],
+)
+
+haskell_doc(
+    name = "haddock-transitive",
+    index_transitive_deps = True,
+    tags = ["requires_hackage"],
+    deps = [":haddock-lib-b"],
+)