Merge pull request #327 from nix-community/haskell

Haskell: enable jailbreak by default

.github/workflows/tests.yml

@@ -89,5 +89,9 @@ jobs:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
           max-jobs = 10
+    - uses: cachix/cachix-action@v10
+      with:
+        name: nix-community
+        signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
 
     - run: nix run .#format -- --fail-on-change

flake.lock

@@ -140,11 +140,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1657638268,
-        "narHash": "sha256-blBNtQSslAFkg0Gym9fWNJk+bPxGSZib4SOcPrmTPi4=",
+        "lastModified": 1665580254,
+        "narHash": "sha256-hO61XPkp1Hphl4HGNzj1VvDH5URt7LI6LaY/385Eul4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "d80993b5f885515254746ba6d1917276ee386149",
+        "rev": "f634d427b0224a5f531ea5aa10c3960ba6ec5f0f",
         "type": "github"
       },
       "original": {

src/subsystems/haskell/builders/simple-haskell/default.nix

@@ -123,6 +123,9 @@ in {
 
           src = getSource name version;
 
+          # ignore if dependencies contain multiple versions of the same package
+          jailbreak = true;
+
           isLibrary = true;
           isExecutable = true;
           doCheck = false;

src/subsystems/haskell/translators/stack-lock/utils.nix

@@ -17,7 +17,31 @@ in rec {
   '';
 
   # The cabal2json program
-  cabal2json = pkgs.haskell.packages.ghc8107.cabal2json;
+  cabal2json = let
+    haskellLib = pkgs.haskell.lib.compose;
+    haskellPackages = pkgs.haskell.packages.ghc8107.override {
+      overrides = _: prev: {
+        autodocodec = l.pipe prev.autodocodec [
+          haskellLib.markUnbroken
+          haskellLib.dontCheck
+        ];
+        validity-aeson = l.pipe prev.validity-aeson [
+          haskellLib.dontCheck
+          haskellLib.markUnbroken
+        ];
+        validity =
+          haskellLib.overrideCabal (_: {
+            patches = [];
+          })
+          (haskellLib.dontCheck prev.validity);
+      };
+    };
+    cabal2json' = haskellPackages.cabal2json.override {
+      Cabal = haskellLib.dontCheck haskellPackages.Cabal_3_2_1_0;
+    };
+    cabal2json = haskellLib.dontCheck cabal2json';
+  in
+    cabal2json;
 
   # parse cabal file via IFD
   fromCabal = file: name: let