=> Bootstrap dependency digest>=20211023: found digest-20220214
=> Fetching calc-2.12.7.1.tar.bz2
=> Total size: 967943 bytes
ftp: Can't LOOKUP `downloads.sourceforge.net:https': No address associated with hostname
ftp: Can't connect to `downloads.sourceforge.net:https'
fetch: Unable to fetch expected file calc-2.12.7.1.tar.bz2
=> Checksum BLAKE2s OK for calc-2.12.7.1.tar.bz2
=> Checksum SHA512 OK for calc-2.12.7.1.tar.bz2