init

.envrc

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

.gitignore

@@ -0,0 +1,2 @@
+.pre-commit-config.yaml
+result*

LICENSE

@@ -0,0 +1,20 @@
+The MIT License
+Copyright 2021 Simon Bruder
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -0,0 +1,36 @@
+# pokegb-nix
+
+A nixpkgs overlay for compiling/assembling Game Boy Pokémon ROMs.
+
+## Usage
+
+If you have a Nix version with flake support, simply run a command like this:
+
+```bash
+nix build ".#pokegb/red" # builds Pokémon Red/Blue
+nix build ".#pokegb/all" # builds all ROMs into one directory
+```
+
+For the legacy Nix UI you can use a command like this:
+
+```bash
+nix-build -E 'import <nixpkgs> { overlays = [ (import ./default.nix) ]; }' -A pokegb.red
+```
+
+If you do not allow unfree packages globally, you might have to run the command
+with the environment variable `NIXPKGS_ALLOW_UNFREE=1` set.
+
+You can find a list of all packages provided by this overlay in `default.nix`.
+
+## License
+
+[The MIT License](./LICENSE)
+
+This only applies to the package expressions, not the built packages. Patches
+may also be licensed differently, since they may be derivative works of the
+packages to which they apply.
+
+##### Disclaimer
+
+This project is not affiliated with Nintendo or any of its subsidiaries.
+Pokémon is a registered trademark of Nintendo.

default.nix

@@ -0,0 +1 @@
+final: prev: { }

flake.lock

@@ -0,0 +1,68 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1623875721,
+        "narHash": "sha256-A8BU7bjS5GirpAUv4QA+QnJ4CceLHkcXdRp4xITDB0s=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "f7e004a55b120c02ecb6219596820fcd32ca8772",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nix-pre-commit-hooks": {
+      "inputs": {
+        "flake-utils": [
+          "flake-utils"
+        ],
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1624971177,
+        "narHash": "sha256-Amf/nBj1E77RmbSSmV+hg6YOpR+rddCbbVgo5C7BS0I=",
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "rev": "397f0713d007250a2c7a745e555fa16c5dc8cadb",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "ref": "master",
+        "repo": "pre-commit-hooks.nix",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1628280432,
+        "narHash": "sha256-bqwbY8NtJ2S7RXJpYK0Xw0vMZRzmxS5KmSWIb0g7/Ts=",
+        "owner": "sbruder",
+        "repo": "nixpkgs",
+        "rev": "bf6d934cf80e6f5365d3193e01840397709d4d87",
+        "type": "github"
+      },
+      "original": {
+        "owner": "sbruder",
+        "ref": "update-rgbds",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nix-pre-commit-hooks": "nix-pre-commit-hooks",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,50 @@
+{
+  description = "A nixpkgs overlay for compiling/assembling Game Boy Pokémon ROMs";
+
+  inputs = {
+    # Until https://github.com/NixOS/nixpkgs/pull/132928 gets merged, this fork
+    # has to be used because the ROMs require rgbds 0.5.1.
+    nixpkgs.url = "github:sbruder/nixpkgs/update-rgbds";
+
+    flake-utils.url = "github:numtide/flake-utils";
+
+    nix-pre-commit-hooks.url = "github:cachix/pre-commit-hooks.nix/master";
+    nix-pre-commit-hooks.inputs.flake-utils.follows = "flake-utils";
+    nix-pre-commit-hooks.inputs.nixpkgs.follows = "nixpkgs";
+  };
+
+  outputs = { self, nixpkgs, flake-utils, nix-pre-commit-hooks }:
+    let
+      inherit (nixpkgs) lib;
+    in
+    {
+      overlay = import ./default.nix;
+    } // (flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs {
+          inherit system;
+          overlays = [ self.overlay ];
+          config = {
+            allowUnfree = true;
+          };
+        };
+      in
+      rec {
+        checks = {
+          pre-commit-check = nix-pre-commit-hooks.lib.${system}.run {
+            src = self;
+            hooks = {
+              nixpkgs-fmt.enable = true;
+            };
+          };
+        };
+
+        devShell = pkgs.mkShell {
+          inherit (self.checks.${system}.pre-commit-check) shellHook;
+        };
+
+        packages = flake-utils.lib.flattenTree {
+          inherit (pkgs);
+        };
+      }));
+}