Hello Bill, actually I haven't installed an alternative version of perl (at least I'm not aware of) and the path where the files are located fits the official debian package of perl base: https://packages.debian.org/stretch/amd64/perl-base/filelist If popcon expects a different perl package with files located somewhere else the dependencies should be fixed.
> apt list -a perl-base > Listing... Done > perl-base/testing,unstable,now 5.24.1-1 amd64 [installed] Obviously it's due to my UMASK of 077 cause this wouldn't allow nobody:nogroup to access it. But shouldn't debian packages installed via apt/dpkg manage the access rights regardless of UMASK? Best wishes, Martin
