Add github action

.github/workflows/haskell.yml

@@ -0,0 +1,39 @@
+name: github-action
+
+on: [push, pull_request] 
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        ghc: ['8.10.7']
+        os: ['ubuntu-latest', 'macos-latest']
+    runs-on: ${{ matrix.os }}
+
+    name: GHC ${{ matrix.ghc }} on ${{ matrix.os }}
+    steps:
+    - uses: actions/checkout@v3
+    - uses: haskell-actions/setup@v2
+      with:
+        ghc-version: ${{ matrix.ghc }}
+    - name: Cache
+      uses: actions/cache@v1
+      env:
+        cache-name: cache-cabal
+      with:
+        path: ~/.cabal
+        key: ${{ runner.os }}-${{ matrix.ghc }}-build-${{ env.cache-name }}-${{ hashFiles('**/*.cabal') }}-${{ hashFiles('**/cabal.project') }}
+        restore-keys: |
+          ${{ runner.os }}-${{ matrix.ghc }}-build-${{ env.cache-name }}-
+          ${{ runner.os }}-${{ matrix.ghc }}-build-
+          ${{ runner.os }}-${{ matrix.ghc }}-
+          ${{ runner.os }}
+    - name: Install dependencies
+      run: |
+        cabal update
+        cabal --project-file=ci-cabal.project configure
+        cabal --project-file=ci-cabal.project build --only-dependencies --enable-tests --enable-benchmarks all
+    - name: Build
+      run: cabal --project-file=ci-cabal.project build --enable-tests --enable-benchmarks all
+    - name: Run tests
+      run: cabal --project-file=ci-cabal.project test all

ci-cabal.project

@@ -0,0 +1,4 @@
+packages:
+  hs/
+
+allow-newer: abacate:*, reflex-process:*, reflex-vty:*

hs/daml-cucumber.cabal

@@ -16,6 +16,12 @@ category:        Testing
 build-type:      Simple
 extra-doc-files: CHANGELOG.md
 
+flag use-static-which
+  description: Use System.Which.staticWhich to determine the path
+    to the daml executable at compile time.
+  default: False
+  manual: True
+
 common warnings
   ghc-options: -Wall
 
@@ -60,12 +66,17 @@ library
     , temporary              >=1.3     && <1.4
     , text                   >=1.2.4   && <1.3
     , unix                   >=2.7.2   && <2.8
-    , which                  >=0.2     && <0.3
     , yaml                   >=0.11    && <0.12
 
+  if flag(use-static-which)
+    build-depends:
+      which                  >=0.2     && <0.3
+    cpp-options:      -DSTATIC_WHICH
+
   hs-source-dirs:     src
   default-language:   Haskell2010
   default-extensions:
+    CPP
     DeriveGeneric
     FlexibleContexts
     GeneralizedNewtypeDeriving

hs/default.nix

@@ -14,7 +14,7 @@ let
   haskellLib = platform.nixpkgs.haskell.lib;
   ghc = platform.ghc.override {
     overrides = self: super: {
-      abacate = haskellLib.doJailbreak (haskellLib.markUnbroken super.abacate);
+      abacate = self.callCabal2nix "abacate" (pkgs.hackGet ./dep/abacate) {};
       reflex-process = self.callCabal2nix "reflex-process" (pkgs.hackGet ./dep/reflex-process) {};
       which = haskellLib.doJailbreak super.which;
       reflex = self.callCabal2nix "reflex" (pkgs.hackGet ./dep/reflex) {};

hs/dep/abacate/default.nix

@@ -0,0 +1,2 @@
+# DO NOT HAND-EDIT THIS FILE
+import (import ./thunk.nix)

hs/dep/abacate/github.json

@@ -0,0 +1,7 @@
+{
+  "owner": "obsidiansystems",
+  "repo": "abacate",
+  "private": false,
+  "rev": "2b94f2b79923a326e1f32b3ad16aabc4b0e79931",
+  "sha256": "03ncansyi39swdg99pq750m3a9fj9af40cxdrk7a003yi4d0q3rs"
+}

hs/dep/abacate/thunk.nix

@@ -0,0 +1,12 @@
+# DO NOT HAND-EDIT THIS FILE
+let fetch = { private ? false, fetchSubmodules ? false, owner, repo, rev, sha256, ... }:
+  if !fetchSubmodules && !private then builtins.fetchTarball {
+    url = "https://github.com/${owner}/${repo}/archive/${rev}.tar.gz"; inherit sha256;
+  } else (import (builtins.fetchTarball {
+  url = "https://github.com/NixOS/nixpkgs/archive/3aad50c30c826430b0270fcf8264c8c41b005403.tar.gz";
+  sha256 = "0xwqsf08sywd23x0xvw4c4ghq0l28w2ki22h0bdn766i16z9q2gr";
+}) {}).fetchFromGitHub {
+    inherit owner repo rev sha256 fetchSubmodules private;
+  };
+  json = builtins.fromJSON (builtins.readFile ./github.json);
+in fetch json

hs/src/Daml/Cucumber/LSP.hs

@@ -29,9 +29,17 @@ import System.Directory
 import System.Posix.Process
 import System.Posix.Types
 import qualified System.Process as Proc
-import System.Which
 import Text.HTML.TagSoup
 
+#ifdef STATIC_WHICH
+import System.Which
+damlPath :: FilePath
+damlPath = $(staticWhich "daml")
+#else
+damlPath :: FilePath
+damlPath = "daml"
+#endif
+
 data RanTest = RanTest
   { ranTestTraces :: [Text]
   , ranTestError :: Text
@@ -235,9 +243,6 @@ instance FromJSON Response where
       parseNotification o = do
         Notification <$> parseRPC o
 
-damlPath :: FilePath
-damlPath = $(staticWhich "daml")
-
 data DamlIde t = DamlIde
   { damlIde_testResponses :: Dynamic t (Set TestResponse)
   , damlIde_allResponses :: Dynamic t [Response]