tests.api.x86_64-linux =
          with import (nixpkgs + "/nixos/lib/testing-python.nix") { system = "x86_64-linux"; };
          simpleTest {
            machine = { pkgs, ... }: {
              imports = [ hydraServer ];
              # No caching for PathInput plugin, otherwise we get wrong values
              # (as it has a 30s window where no changes to the file are considered).
              services.hydra-dev.extraConfig = ''
                path_input_cache_validity_seconds = 0
              '';
            };
            testScript =
              let dbi = "dbi:Pg:dbname=hydra;user=root;"; in
              ''
                machine.wait_for_job("hydra-init")

                # Create an admin account and some other state.
                machine.succeed(
                    """
                        su - hydra -c "hydra-create-user root --email-address 'alice@example.org' --password foobar --role admin"
                        mkdir /run/jobset /tmp/nix
                        chmod 755 /run/jobset /tmp/nix
                        cp ${./t/api-test.nix} /run/jobset/default.nix
                        chmod 644 /run/jobset/default.nix
                        chown -R hydra /run/jobset /tmp/nix
                """
                )
                machine.succeed("systemctl stop hydra-evaluator hydra-queue-runner")
                machine.wait_for_job("hydra-server")
                machine.wait_for_open_port("3000")
                # Run the API tests.
                machine.succeed(
                    "su - hydra -c 'perl -I ${pkgs.hydra.perlDeps}/lib/perl5/site_perl ${./t/api-test.pl}' >&2"
                )
              '';
        };