{
  description = "SelfPrivacy API flake";

  inputs.nixpkgs.url = "github:nixos/nixpkgs";

  outputs = { self, nixpkgs, ... }:
    let
      system = "x86_64-linux";
      pkgs = nixpkgs.legacyPackages.${system};
      selfprivacy-graphql-api = pkgs.callPackage ./default.nix {
        pythonPackages = pkgs.python310Packages;
        rev = self.shortRev or self.dirtyShortRev or "dirty";
      };
    in
    {
      packages.${system}.default = selfprivacy-graphql-api;
      nixosModules.default =
        import ./nixos/module.nix self.packages.${system}.default;
      devShells.${system}.default = pkgs.mkShell {
        packages =
          let
            # TODO is there a better way to get environment for VS Code?
            python3 =
              nixpkgs.lib.findFirst (p: p.pname == "python3") (abort "wtf")
                self.packages.${system}.default.propagatedBuildInputs;
            python-env =
              python3.withPackages
                (_: self.packages.${system}.default.propagatedBuildInputs);
          in
          with pkgs; [
            python-env
            black
            rclone
            redis
            restic
          ];
        shellHook = ''
          # envs set with export and as attributes are treated differently.
          # for example. printenv <Name> will not fetch the value of an attribute.
          export USE_REDIS_PORT=6379
          export TEST_MODE=true
          pkill redis-server
          sleep 2
          setsid redis-server --bind 127.0.0.1 --port $USE_REDIS_PORT >/dev/null 2>/dev/null &
          # maybe set more env-vars
        '';
      };
    };
  nixConfig.bash-prompt = ''\n\[\e[1;32m\][\[\e[0m\]\[\e[1;34m\]SP devshell\[\e[0m\]\[\e[1;32m\]:\w]\$\[\[\e[0m\] '';
}