  nix-store -q --referrers /nix/store/9fyhdgrnzksir17bhksvjbqzw80f98h9-gtk+-2.24.32
/nix/store/9fyhdgrnzksir17bhksvjbqzw80f98h9-gtk+-2.24.32
/nix/store/3srffidlwibf78ii6p6n6qs5lh3660mf-libcanberra-0.30
/nix/store/vrfb2dgmajjs510qsnb3wam2girn0ry5-firefox-beta-bin-unwrapped-85.0b6
/nix/store/03i733618dfnrphgdjff94wj9n3pa954-firefox-beta-bin-85.0b6
/nix/store/15gdwjpd10qnah9ibf22vald3k8x0sng-vscode-1.53.2
/nix/store/8xc69sm7v1r5abbbjsygv3agg1n0nc9v-gtk-engine-murrine-0.98.2
/nix/store/90ykx85by4mb5kaqmagayzcwni3bmlmn-gtk+-2.24.32-dev
/nix/store/986irvv70mkrdrrdqmh0sr8y8yyvyb88-gimp-2.10.22
/nix/store/qpjl72kxplfrhmywkkwm5b9sfgb001hq-python2.7-pygtk-2.24.0

   nix why-depends /nix/store/15gdwjpd10qnah9ibf22vald3k8x0sng-vscode-1.53.2 /nix/store/9fyhdgrnzksir17bhksvjbqzw80f98h9-gtk+-2.24.32
/nix/store/15gdwjpd10qnah9ibf22vald3k8x0sng-vscode-1.53.2
╚═══bin/code: …lib/girepository-1.0:/nix/store/9fyhdgrnzksir17bhksvjbqzw80f98h9-gtk+-2.24.32/lib/girepository-1…
    => /nix/store/9fyhdgrnzksir17bhksvjbqzw80f98h9-gtk+-2.24.32