truncated names: perhaps assumes a fixed store prefix length?

I tried to diff some derivations in `/nix/store/` to some derivations in `/tmp`, and got truncated names: ``` - 4rjz3965j8qjaf5qnfii1991cyrbrqxr-nixos-graphical-25.05pre793008.f02fddb8acef-x86_64-linux.iso.drv:{out} + /nix/store/vbs21r5zn550hhsmarl22xz68sbz12lv-nixos-graphical-25.05pre793008.f02fddb8acef-x86_64-linux.iso.drv:{out} • The set of input derivation names do not match: - age_eltorito - e-info - rectory - ux.cfg + efi-directory + efi-image_eltorito + isolinux.cfg • The set of input derivations named `closure-info` do not match + /nix/store/46psyizz5a7ny5cm70b33l81lb00v2sv-closure-info.drv:{out} • The environments do not match: ``` I suspect something assumes the store prefix would have a fixed length across all derivations