Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: scan-vector-machine (user goal)
rejecting: scan-vector-machine-0.2.7, 0.2.6, 0.2.5, 0.2.4, 0.2.3, 0.2.2
(global constraint requires ==0.2.1)
trying: scan-vector-machine-0.2.1
trying: accelerate-0.15.1.0 (dependency of scan-vector-machine-0.2.1)
trying: base-4.8.1.0/installed-4f7... (dependency of accelerate-0.15.1.0)
next goal: haskell2010 (dependency of scan-vector-machine-0.2.1)
rejecting: haskell2010-1.1.2.0 (conflict: base==4.8.1.0/installed-4f7...,
haskell2010 => base>=4.7 && <4.8)
rejecting: haskell2010-1.1.1.0 (conflict: base==4.8.1.0/installed-4f7...,
haskell2010 => base==4.6.*)
rejecting: haskell2010-1.1.0.1, 1.1.0.0 (conflict:
base==4.8.1.0/installed-4f7..., haskell2010 => base>=4.3 && <4.7)
rejecting: haskell2010-1.0.0.0 (conflict: base==4.8.1.0/installed-4f7...,
haskell2010 => base>=4.3 && <4.6)
Dependency tree exhaustively searched.