Without the change the build fails on `master` as https://hydra.nixos.org/build/313371233: ERROR: installManPage: installManPage: path missing manpage section suffix: doc/man/man3/noname ZHF: #457852
Without the change the build fails on `master` as https://hydra.nixos.org/build/313371233: ERROR: installManPage: installManPage: path missing manpage section suffix: doc/man/man3/noname ZHF: #457852