$ nix-store -q --referrers `which nix-repl`
/nix/store/8rj57vahlndqwg4q095x5qvfa1g4rmvr-env-manifest.nix
/nix/store/9c8ak2h7c6vbr9kqk8i2n96bwg55br7y-env-manifest.nix
/nix/store/dr1y2saask2k4y2wrmxw443302pp02z2-user-environment
/nix/store/f01lfzbw7n0yzhsjd33xfj77li9raljv-user-environment