semantics, readability, relicense, initResource argument removal

flake.nix

@@ -5,9 +5,68 @@
   outputs = {nixpkgs, ...}: let
     system = "x86_64-linux";
     pkgs = nixpkgs.legacyPackages.${system};
+    debugGhcOptions = pkgs.lib.concatStringsSep " " (debugGhcFlags ++ commonGhcFlags);
+    debugGhcFlags = [
+      "-O0"
+      "-Wall"
+      "-Widentities"
+      "-Wincomplete-record-updates"
+      "-Wincomplete-uni-patterns"
+      # "-Wmissing-export-lists"
+      "-Wmissing-home-modules"
+      "-Wpartial-fields"
+      "-Wredundant-constraints"
+      "-threaded"
+      "-rtsopts"
+      "-with-rtsopts=-N"
+      "-main-is Game"
+    ];
+    haddockOptions = pkgs.lib.concatStringsSep " " haddockFlags;
+    haddockFlags = [
+      "--html"
+      "--odir docs"
+      "--optghc=-i./src"
+      "src/Game.hs"
+    ];
+    releaseGhcOptions = pkgs.lib.concatStringsSep " " (releaseGhcFlags ++ commonGhcFlags);
+    releaseGhcFlags = [
+      "-O2"
+      "-threaded"
+      "-rtsopts"
+      "-with-rtsopts=-N"
+      "-main-is Game"
+    ];
+    noHaddockOptions = "";
+    commonGhcFlags = [
+      "-i./src"
+    ];
+    ghcPackages = p: [
+      p.GLFW-b
+      p.linear
+      p.OpenGL
+    ];
   in {
     packages.${system} = {
-      default = pkgs.callPackage ./package.nix {};
+      debug = pkgs.callPackage ./package.nix {
+        ghcOptions = debugGhcOptions;
+        haddockOptions = noHaddockOptions;
+        inherit ghcPackages;
+      };
+      release = pkgs.callPackage ./package.nix {
+        ghcOptions = releaseGhcOptions;
+        haddockOptions = noHaddockOptions;
+        inherit ghcPackages;
+      };
+      docs = pkgs.callPackage ./package.nix {
+        ghcOptions = "--version";
+        inherit haddockOptions;
+        inherit ghcPackages;
+      };
+      default = pkgs.callPackage ./package.nix {
+        ghcOptions = releaseGhcOptions;
+        inherit haddockOptions;
+        inherit ghcPackages;
+      };
     };
   };
 }