Fix Windows cross compilation by downgrading haskell.nix

cardano-foundation · Dec 17, 2024 · 7fde8cb · 7fde8cb
1 parent 9e619ec
commit 7fde8cb
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Showing 3 changed files with 55 additions and 44 deletions.
diff --git a/flake.lock b/flake.lock
diff --git a/flake.nix b/flake.nix
@@ -124,7 +124,11 @@
       flake = false;
     };
     haskellNix = {
-      url = "github:input-output-hk/haskell.nix";
+      # GHC 8.10.7 cross compilation for windows is broken in newer versions of haskell.nix.
+      # Unpin this once we no longer need GHC 8.10.7.
+      # We follow
+      # https://github.com/IntersectMBO/cardano-node/blob/36871ba0cd3e86a5dbcfd6878cdb7168bb4e56a1/flake.nix#L17C1-L23C7
+      url = "github:input-output-hk/haskell.nix/cb139fa956158397aa398186bb32dd26f7318784";
       inputs.nixpkgs.follows = "nixpkgs";
       inputs.hackage.follows = "hackage";
     };

diff --git a/nix/haskell.nix b/nix/haskell.nix
@@ -102,7 +102,9 @@ CHaP: haskell-nix: nixpkgs-recent: nodePkgs: haskell-nix.cabalProject' [
 
     in {
       name = "cardano-wallet";
-      compiler-nix-name = "ghc966";
+      # We're pinned to GHC 9.6.4
+      # due to haskell.nix issues with Windows cross-compilation.
+      compiler-nix-name = "ghc964";
 
       src = haskellLib.cleanSourceWith {
         name = "cardano-wallet-src";