flake.nix

{
  description = "Highlight arbitrary text changes by undo, redo, :substitute, etc.";
  nixConfig = {
    extra-substituters = ["https://nix-community.cachix.org"];
    extra-trusted-public-keys = [
      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
    ];
  };
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
    flake-utils.url = "github:numtide/flake-utils";
  };
  outputs = inputs @ {nixpkgs, ...}:
    inputs.flake-utils.lib.eachDefaultSystem
    (system: let
      pkgs = nixpkgs.legacyPackages.${system};
    in {
      devShells.default = pkgs.mkShellNoCC {
        name = "emission";
        buildInputs = with pkgs; [
          gnumake
          fennel
          fennel-ls
          luajitPackages.vusted
        ];
      };
    });
}