Preprocessing executable 'halive' for halive-0.1.0.0...
exec/main.hs:1:8:
Could not find module ‘Halive’
Use -v to see a list of the files searched for.
exec/main.hs:2:8:
Could not find module ‘Banner’
Use -v to see a list of the files searched for.
It appears that the published release tarball is incomplete.
Citing from http://hydra.cryp.to/build/889395/log/raw:
It appears that the published release tarball is incomplete.