{ description = "A very basic flake"; inputs = { nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable"; }; outputs = { self, nixpkgs }: let system = "x86_64-linux"; pkgs = import nixpkgs { inherit system; }; in { devShells.${system}.default = pkgs.mkShell { buildInputs = [ pkgs.docker pkgs.docker-compose ]; shellHook = '' docker compose -f db/docker-compose.yml up mysql -d trap 'docker compose -f db/docker-compose.yml down' EXIT ''; }; }; }