Haskell template

haskell/.envrc

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+use flake

haskell/.gitignore

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+result
+.direnv
+dist-newstyle

haskell/flake.nix

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+{ description = "A basic Haskell flake";
+# To be used in conjunction with cabal2nix
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+  outputs = { self, nixpkgs, flake-utils}:
+  flake-utils.lib.eachDefaultSystem (system:
+  let pkgs = import nixpkgs { inherit system; };
+      compiler = throw "add compiler version here";
+  in {
+    packages = {
+      default = pkgs.haskell.packages.${compiler}.mkDerivation rec {
+        pname = throw "insert haskell package name here\nderived from the .cabal file";
+        version = "0.1.0.0";
+        src = ./.;
+        isLibrary = false;
+        isExecutable = true;
+        executableHaskellDepends = with pkgs.haskellPackages; [
+          base
+        ];
+        license = pkgs.lib.licenses.agpl3Only;
+        mainProgram = pname;
+      };
+    };
+
+    devShells.default = pkgs.mkShell {
+      buildInputs = with pkgs.haskellPackages; [
+        base
+        cabal-install
+        ghc
+        haskell-language-server
+        cabal2nix
+      ];
+    };
+
+  });
+}