flake.nix

# https://github.com/Gerg-L/nix-templates/blob/master/devShell%2Fflake.nix
{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
  };
  outputs =
    { nixpkgs, ... }:
    {
      devShells.x86_64-linux =
        let
          pkgs = nixpkgs.legacyPackages.x86_64-linux;
        in
        {
          default = pkgs.mkShell {
            packages = [ pkgs.ruby_3_3 ];
          };
        };
    };
}