I was trying to build one of my packages with ghc-7.6.3 (bit old now I know) and hit this:
Preprocessing library x509-validation-1.6.10...
Data/X509/Validation/Signature.hs:26:8:
Could not find module `Data.X509.EC'
Perhaps you meant Data.X509 (from x509-1.6.5)
Use -v to see a list of the files searched for.
I was trying to build one of my packages with ghc-7.6.3 (bit old now I know) and hit this:
https://travis-ci.org/juhp/cabal-rpm/jobs/359757940