building '/nix/store/hw3nl1xirbdwz4r0xp4m6bzhv963lhqk-effect-env.drv'...
Running phase: initPhase
@nix { "action": "setPhase", "phase": "initPhase" }
Running phase: userSetupPhase
@nix { "action": "setPhase", "phase": "userSetupPhase" }
Running phase: effectPhase
@nix { "action": "setPhase", "phase": "effectPhase" }
{branch:main,rev:d18cb0d60ab2ae867c995242e4cdd3731371fa23,tag:null}
Hello, world!