fix flake.nix

Author: ingun37

.github/workflows/main.yml

@@ -19,9 +19,9 @@ jobs:
         name: inguncache
         authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
     - run: |
-        nix run "github:input-output-hk/haskell.nix#hix" -- init
-        echo "------ Content of flake.nix ------"
-        cat flake.nix
-        echo "----- Content of nix/hix.nix -----"
-        cat nix/hix.nix
+        # nix run "github:input-output-hk/haskell.nix#hix" -- init
+        # echo "------ Content of flake.nix ------"
+        # cat flake.nix
+        # echo "----- Content of nix/hix.nix -----"
+        # cat nix/hix.nix
         nix build .#answers-script:exe:answers-script

flake.nix

@@ -0,0 +1,41 @@
+{
+  # This is a template created by `hix init`
+  inputs.haskellNix.url = "github:input-output-hk/haskell.nix";
+  inputs.nixpkgs.follows = "haskellNix/nixpkgs-unstable";
+  inputs.flake-utils.url = "github:numtide/flake-utils";
+  outputs = { self, nixpkgs, flake-utils, haskellNix }:
+    let
+      supportedSystems = [
+        "x86_64-linux"
+        # "x86_64-darwin"
+        # "aarch64-linux"
+        # "aarch64-darwin"
+      ];
+    in
+      flake-utils.lib.eachSystem supportedSystems (system:
+      let
+        overlays = [ haskellNix.overlay
+          (final: _prev: {
+            hixProject =
+              final.haskell-nix.hix.project {
+                src = ./.;
+                # uncomment with your current system for `nix flake show` to work:
+                #evalSystem = "x86_64-linux";
+              };
+          })
+        ];
+        pkgs = import nixpkgs { inherit system overlays; inherit (haskellNix) config; };
+        flake = pkgs.hixProject.flake {};
+      in flake // {
+        legacyPackages = pkgs;
+      });
+  # --- Flake Local Nix Configuration ----------------------------
+  nixConfig = {
+    # This sets the flake to use the IOG nix cache.
+    # Nix should ask for permission before using it,
+    # but remove it here if you do not want it to.
+    extra-substituters = ["https://cache.iog.io"];
+    extra-trusted-public-keys = ["hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ="];
+    allow-import-from-derivation = "true";
+  };
+}

nix/hix.nix

@@ -0,0 +1,15 @@
+{pkgs, ...}: {
+  # name = "project-name";
+  compiler-nix-name = "ghc9121"; # Version of GHC to use
+  # Cross compilation support:
+  # crossPlatforms = p: pkgs.lib.optionals pkgs.stdenv.hostPlatform.isx86_64 ([
+  #   p.mingwW64
+  #   p.ghcjs
+  # ] ++ pkgs.lib.optionals pkgs.stdenv.hostPlatform.isLinux [
+  #   p.musl64
+  # ]);
+  # Tools to include in the development shell
+  shell.tools.cabal = "latest";
+  # shell.tools.hlint = "latest";
+  # shell.tools.haskell-language-server = "latest";
+}