Update rules_haskell - now generates Haskell version macros (#769)

* Update rules_haskell: Generates version macros

- rules_haskell now generates a version macros header file that is
  passed on to preprocessors such as c2hs or hsc2hs.
- The haskell_import rule was also renamed to haskell_toolchain_library.

* Drop unix-compat patch

This was necessary to work around missing version macros.

BAZEL-haskell.md

@@ -160,15 +160,15 @@ sets the default visibility property globally for our targets as `public`. This
 The `load` statments
 ```
 load("@io_tweag_rules_haskell//haskell:haskell.bzl",
-  "haskell_toolchain", "haskell_import", "haskell_cc_import",
+  "haskell_toolchain", "haskell_toolchain_library", "haskell_cc_import",
 )
 load("@io_tweag_rules_haskell//haskell:c2hs.bzl",
   "c2hs_toolchain",
 )
 ```
-bring the macros `haskell_toolchain`, `haskell_import`, `haskell_cc_import` and `c2hs_toolchain` into scope from `rules_haskell`.
+bring the macros `haskell_toolchain`, `haskell_toolchain_library`, `haskell_cc_import` and `c2hs_toolchain` into scope from `rules_haskell`.
 
-`haskell_import`:
+`haskell_toolchain_library`:
 - import a package that is prebuilt outside of Bazel
 
 `haskell_cc_import`:

WORKSPACE

@@ -452,12 +452,7 @@ hazel_repositories(
             hazel_hackage("filepattern", "0.1.1", "f7fc5bdcfef0d43a793a3c64e7c0fd3b1d35eea97a37f0e69d6612ab255c9b4b") +
             hazel_hackage("terminal-progress-bar", "0.4.0.1", "c5a9720fcbcd9d83f9551e431ee3975c61d7da6432aa687aef0c0e04e59ae277") +
             hazel_hackage("rope-utf16-splay", "0.2.0.0", "83d1961bf55355da49a6b55d6f58d02483eff1f8e6df53f4dccdab1ac49e101d") +
-            hazel_hackage(
+            hazel_hackage("unix-compat", "0.5.1", "a39d0c79dd906763770b80ba5b6c5cb710e954f894350e9917de0d73f3a19c52") +
-                "unix-compat",
-                "0.5.1",
-                "a39d0c79dd906763770b80ba5b6c5cb710e954f894350e9917de0d73f3a19c52",
-                patches = ["@com_github_digital_asset_daml//bazel_tools:unix-compat.patch"],
-            ) +
             # This is a special version of Haskell LSP without GPL dependencies
             hazel_github(
                 "haskell-lsp",

bazel_tools/unix-compat.patch

@@ -1,14 +0,0 @@
---- src/System/PosixCompat/Files.hsc    2018-08-23 02:44:16.000000000 +0200
-+++ src/System/PosixCompat/Files.hsc    2019-04-15 13:41:46.371761110 +0200
-@@ -392,11 +392,7 @@
- -- Renaming
-
- rename :: FilePath -> FilePath -> IO ()
--#if MIN_VERSION_Win32(2, 6, 0)
- rename name1 name2 = moveFileEx name1 (Just name2) mOVEFILE_REPLACE_EXISTING
--#else
--rename name1 name2 = moveFileEx name1 name2 mOVEFILE_REPLACE_EXISTING
--#endif
-
- -- -----------------------------------------------------------------------------
- -- chown()

deps.bzl

@@ -27,8 +27,8 @@
 # be resolvable from external workspaces otherwise.
 
 rules_scala_version = "6f8ee3d951d2ac6154356314600f6edb4eb5df8b"
-rules_haskell_version = "42f32a4017235b8c600a6cdd076232698285eef9"
+rules_haskell_version = "23eaaa8c85d908fb3ccc69b470d3730dcef165a0"
-rules_haskell_sha256 = "0ed1a2cecd85fb03720893c4a122f8a64eed9d87c173de7bdf2dd295ea1ccf98"
+rules_haskell_sha256 = "9fab4f50a0ea0e02d98c918fdf0859cf0f6828b6dbf167c7acb1293cd2b37d65"
 rules_nixpkgs_version = "40b5a9f23abca57f364c93245c7451206ef1a855"
 
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")

notices-gen/src/notices.hs

@@ -103,7 +103,7 @@ ppFullLicense libFullText =  "\n\n" ++ replicate 80 '-' ++ "\n" ++ packageName l
 
 generateDepsFileFromBazel :: IO String
 generateDepsFileFromBazel = do
-  let cmd = "bazel query 'kind(\"(haskell_library|haskell_import)\",filter(\"^((?!da-hs-|:daml-|:daml_).)*$\", deps(//...)))' --output xml" 
+  let cmd = "bazel query 'kind(\"(haskell_library|haskell_toolchain_library)\",filter(\"^((?!da-hs-|:daml-|:daml_).)*$\", deps(//...)))' --output xml"
   readCreateProcess (shell cmd) ""