mateamt/flake.nix

{
  description = "A game stub written in Haskell";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = { self, nixpkgs, flake-utils }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = nixpkgs.legacyPackages.${system};

        haskellPackages = pkgs.haskellPackages.override {
          overrides = final: prev: {
            openapi3 = jailbreakUnbreak (pkgs.haskell.lib.dontCheck prev.openapi3);
          };
        };

        jailbreakUnbreak = pkg:
          pkgs.haskell.lib.doJailbreak (pkg.overrideAttrs (_: { meta = { }; }));

        packageName = "mateamt";
      in rec {
        packages.${packageName} = # (ref:haskell-package-def)
          haskellPackages.callCabal2nix packageName self rec {
            # Dependency overrides go here
            postgresql-simple-migration = jailbreakUnbreak haskellPackages.postgresql-simple-migration;
          };

        defaultPackage = self.packages.${system}.${packageName};

        devShell = haskellPackages.shellFor {
          packages = p: [ defaultPackage ];
          withHoogle = true;
          buildInputs = with haskellPackages; [
            haskell-language-server
            ghcid
            cabal-install
          ];
        };
      });
}