=> Bootstrap dependency digest>=20010302: found digest-20080510
=> Fetching networkx-0.37.tar.gz
=> Total size: 971848 bytes
ftp: Can't lookup `https:ftp': No address associated with hostname
ftp: Can't connect or login to host `https:(null)'
fetch: Unable to fetch expected file networkx-0.37.tar.gz
ftp: Error retrieving file `404 Not Found'
fetch: Unable to fetch expected file networkx-0.37.tar.gz
Can't open networkx-0.37.tar.gz: No such file or directory
fetch: Unable to fetch expected file networkx-0.37.tar.gz
networkx-0.37.tar.gz: No such file or directory.
fetch: Unable to fetch expected file networkx-0.37.tar.gz
ftp: Error retrieving file `404 Not Found'
fetch: Unable to fetch expected file networkx-0.37.tar.gz
Failed to open file.
fetch: Unable to fetch expected file networkx-0.37.tar.gz
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/math/py-networkx