1 files changed, 70 insertions, 0 deletions
diff --git a/third_party/bazel/rules_haskell/tests/cc_haskell_import/BUILD.bazel b/third_party/bazel/rules_haskell/tests/cc_haskell_import/BUILD.bazel
new file mode 100644
index 0000000000..c896314500
--- /dev/null
+++ b/third_party/bazel/rules_haskell/tests/cc_haskell_import/BUILD.bazel
@@ -0,0 +1,70 @@
+load(
+    "@io_tweag_rules_haskell//haskell:haskell.bzl",
+    "haskell_library",
+)
+
+package(default_testonly = 1)
+
+haskell_library(
+    name = "hs-lib-a",
+    srcs = ["LibA.hs"],
+    deps = [
+        "//tests/data:ourclibrary",
+        "//tests/hackage:base",
+    ],
+)
+
+haskell_library(
+    name = "hs-lib-b",
+    srcs = ["LibB.hs"],
+    deps = [
+        ":hs-lib-a",
+        "//tests/hackage:base",
+    ],
+)
+
+cc_binary(
+    name = "cc-bin",
+    srcs = [
+        "main.c",
+    ],
+    # TODO support linking with static haskell libraries.
+    linkstatic = False,
+    tags = ["requires_threaded_rts"],
+    visibility = ["//tests:__subpackages__"],
+    deps = [
+        ":hs-lib-b",
+        "@ghc//:threaded-rts",
+    ],
+)
+
+# We go one step further and use the Haskell library from above
+# to build a static .so which is then loaded with a Python script
+# and calls the Haskell function constructed from GHC C FFI.
+
+# shared library which python will dlopen
+cc_binary(
+    name = "hs-lib-b-wrapped.so",
+    linkshared = 1,
+    linkstatic = 0,
+    tags = ["requires_threaded_rts"],
+    visibility = ["//tests:__subpackages__"],
+    deps = [
+        ":hs-lib-b",
+        "@ghc//:threaded-rts",
+    ],
+)
+
+# just dlopens hb-lib-b-wrapped.so and prints it
+py_binary(
+    name = "python_add_one",
+    srcs = ["python_add_one.py"],
+    data = [
+        ":hs-lib-b-wrapped.so",
+    ],
+    default_python_version = "PY3",
+    srcs_version = "PY3ONLY",
+    tags = ["requires_threaded_rts"],
+    visibility = ["//tests:__subpackages__"],
+    deps = ["@bazel_tools//tools/python/runfiles"],
+)