building '/nix/store/nmhl0p2krk32bd0iylvb80amn9n1rrfs-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:9342a4d603654f6444cfb83c5dc0de5a29ccba2d,tag:null}
Hello, world!