{
  description = "ROAPI";
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/release-24.11";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = { self, nixpkgs, flake-utils }:
    flake-utils.lib.eachDefaultSystem
      (system:
        let pkgs = nixpkgs.legacyPackages.${system}; in
        {
          devShells.default = pkgs.mkShell {
            name = "roapi";
            buildInputs = [
              # for databases feature
              pkgs.openssl
              pkgs.pkg-config
            ];
            shellHook = ''
              export OPENSSL_DIR="${pkgs.openssl.dev}"
              export OPENSSL_LIB_DIR="${pkgs.openssl.out}/lib"
              export OPENSSL_INCLUDE_DIR="${pkgs.openssl.dev}/include"
              export PKG_CONFIG_PATH="${pkgs.openssl.dev}/lib/pkgconfig:$PKG_CONFIG_PATH"
            '';
          };
        }
      );
}