nixified

.envrc

@@ -0,0 +1 @@
+use flake .

flake.lock

@@ -0,0 +1,61 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1694529238,
+        "narHash": "sha256-zsNZZGTGnMOf9YpHKJqMSsa0dXbfmxeoJ7xHlrt+xmY=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "ff7b65b44d01cf9ba6a71320833626af21126384",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1697957990,
+        "narHash": "sha256-LlyEQ4z1immaiZV+MQMUXM3KpNoRY/xZVm8mmN5j3yg=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "b3ddf9649fdac7db15aeea95cb3114c13594d265",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-23.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

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+{
+  description = "Kanto Expansion Pack Romhack";
+  inputs = {
+    nixpkgs.url = github:NixOS/nixpkgs/nixos-23.05;
+    flake-utils.url = github:numtide/flake-utils;
+  };
+  outputs = { self, nixpkgs, flake-utils, ... }:
+    let
+      kepDerivation = { stdenv, src, pkgs,
+        make ? pkgs.gnumake,
+        gcc ? pkgs.gcc,
+        rgbds ? pkgs.rgbds,
+        files ? ["*.*gb*"],
+        # python3 ? pkgs.python3,
+      }: stdenv.mkDerivation rec {
+          src = ./.;
+          name = "kep-hack";
+          buildInputs = [ rgbds gcc make ];
+          installPhase = ''
+            shopt -s extglob
+            mkdir $out
+            ${builtins.concatStringsSep "\n" (map (item: 
+                if builtins.isList item && (builtins.length item == 2)
+                then "mv ${builtins.elemAt item 0} $out/${builtins.elemAt item 1}"
+                else "cp ${item}* $out"
+              ) files)}
+          '';
+        };
+    in flake-utils.lib.eachDefaultSystem (system: let
+      pkgs = import nixpkgs { inherit system; overlays = [self.overlays.default]; };
+    in {
+      packages = {
+        default = pkgs.kep-hack;
+        kep-hack = pkgs.kep-hack;
+      };
+      devShells = {
+        default = pkgs.mkShell {
+          buildInputs = with pkgs; [
+            rgbds
+            gcc
+            gnumake
+            sameboy
+            imagemagick
+          ];
+        };
+      };
+    }) // {
+      overlays = {
+        default = final: prev: {
+          kep-hack = final.callPackage kepDerivation {
+            files = [
+              ["kep.gbc" "kanto-expansion-pak.gbc"]
+            ];
+          };
+        };
+      };
+    };
+}