avoid system rsync in Darwin and Linux
wrapProgram so we avoid using darwin's rsync
README and use perl version in postInstall
remove stdenv to get rid of warning regarding its replacement by lib
uh, the hardcoded paths need to go away otherwise it doesn't make much sense...but I need to read more about buildPerlPackage, I guess because this all seems to be just slightly off.
Merge branch 'trunk' of git.sr.ht:~rjpcasalino/bss into trunk
new flake and updates bss somewhat but not really