building '/nix/store/16dwgsz58swzm0ii0hr02ijlq2fl8czl-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:4b8b51e066c27c7adb56dd3f2aa61c2b824a85cd,tag:null}
Hello, world!