https://www.ghostscript.com/doc/9.51/News.htm https://www.ghostscript.com/doc/9.52/News.htm
The build process of ghostscript has missing dependencies, causing failures in parallel builds (see hydra build https://hydra.nixos.org/build/117095669/, reported as ghostscript bug https://bugs.ghostscript.com/show_bug.cgi?id=702364 here)