Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: web-rep-0.8.0 (user goal)
[__1] trying: websockets-0.12.7.2 (dependency of web-rep)
[__2] next goal: attoparsec (dependency of web-rep)
[__2] rejecting: attoparsec-0.14.1 (conflict: websockets => attoparsec>=0.10
&& <0.14)
[__2] rejecting: attoparsec-0.13.2.5 (conflict: web-rep => attoparsec^>=0.14)
[__2] skipping: attoparsec-0.13.2.4, attoparsec-0.13.2.3, attoparsec-0.13.2.2,
attoparsec-0.13.2.1, attoparsec-0.13.2.0, attoparsec-0.13.1.0,
attoparsec-0.13.0.2, attoparsec-0.13.0.1, attoparsec-0.13.0.0,
attoparsec-0.12.1.6, attoparsec-0.12.1.5, attoparsec-0.12.1.4,
attoparsec-0.12.1.3, attoparsec-0.12.1.2, attoparsec-0.12.1.1,
attoparsec-0.12.1.0, attoparsec-0.12.0.0, attoparsec-0.11.3.4,
attoparsec-0.11.3.3, attoparsec-0.11.3.2, attoparsec-0.11.3.1,
attoparsec-0.11.3.0, attoparsec-0.11.2.1, attoparsec-0.11.1.0,
attoparsec-0.10.4.0, attoparsec-0.10.3.0, attoparsec-0.10.2.0,
attoparsec-0.10.1.1, attoparsec-0.10.1.0, attoparsec-0.10.0.3,
attoparsec-0.10.0.2, attoparsec-0.10.0.1, attoparsec-0.10.0.0,
attoparsec-0.9.1.2, attoparsec-0.9.1.1, attoparsec-0.9.0.0,
attoparsec-0.8.6.1, attoparsec-0.8.6.0, attoparsec-0.8.5.3,
attoparsec-0.8.5.2, attoparsec-0.8.5.1, attoparsec-0.8.5.0,
attoparsec-0.8.4.0, attoparsec-0.8.3.0, attoparsec-0.8.2.0,
attoparsec-0.8.1.1, attoparsec-0.8.1.0, attoparsec-0.8.0.2,
attoparsec-0.8.0.1, attoparsec-0.8.0.0, attoparsec-0.7.2, attoparsec-0.7.1,
attoparsec-0.6, attoparsec-0.5.1, attoparsec-0.5, attoparsec-0.4 (has the same
characteristics that caused the previous version to fail: excluded by
constraint '^>=0.14' from 'web-rep')
[__2] fail (backjumping, conflict set: attoparsec, web-rep, websockets)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: web-rep, attoparsec, websockets