Resolving dependencies...
cabal: Could not resolve dependencies:
trying: uom-plugin-0.1.0.0 (user goal)
trying: base-4.7.0.1/installed-e4b... (dependency of uom-plugin-0.1.0.0)
next goal: ghc-tcplugins-extra (dependency of uom-plugin-0.1.0.0)
rejecting: ghc-tcplugins-extra-0.1 (conflict: base==4.7.0.1/installed-e4b...,
ghc-tcplugins-extra => base>=4.8 && <4.9)
Dependency tree exhaustively searched.