Resolving dependencies...
cabal: Could not resolve dependencies:
trying: base-4.9.0.0/installed-4.9... (dependency of vacuum-0.0.4)
next goal: filepath (dependency of Cabal-1.6.0.3)
rejecting: filepath-1.4.1.0/installed-1.4..., filepath-1.4.1.1,
filepath-1.4.1.0, filepath-1.4.0.0, filepath-1.3.0.2, filepath-1.3.0.1,
filepath-1.3.0.0, filepath-1.2.0.1, filepath-1.2.0.0 (conflict: Cabal =>
filepath>=1 && <1.2)
trying: filepath-1.1.0.4
trying: cpphs-1.20.2 (dependency of haskell-src-exts-1.18.2)
next goal: directory (dependency of cpphs-1.20.2)
rejecting: directory-1.2.6.2/installed-1.2... (conflict: filepath==1.1.0.4,
directory => filepath==1.4.1.0/installed-1.4...)
rejecting: directory-1.3.0.0, directory-1.2.7.1, directory-1.2.7.0,
directory-1.2.6.3, directory-1.2.6.2, directory-1.2.5.1, directory-1.2.5.0
(conflict: filepath==1.1.0.4, directory => filepath>=1.3 && <1.5)
rejecting: directory-1.2.4.0, directory-1.2.3.1, directory-1.2.3.0,
directory-1.2.2.1, directory-1.2.2.0 (conflict:
base==4.9.0.0/installed-4.9..., directory => base>=4.5 && <4.9)
rejecting: directory-1.2.1.0 (conflict: base==4.9.0.0/installed-4.9...,
directory => base>=4.5 && <4.8)
rejecting: directory-1.2.0.1 (conflict: base==4.9.0.0/installed-4.9...,
directory => base>=4.2 && <4.7)
rejecting: directory-1.2.0.0 (conflict: base==4.9.0.0/installed-4.9...,
directory => base>=4.6 && <4.7)
rejecting: directory-1.1.0.2 (conflict: base==4.9.0.0/installed-4.9...,
directory => base>=4.4 && <4.6)
rejecting: directory-1.1.0.1 (conflict: base==4.9.0.0/installed-4.9...,
directory => base>=4.2 && <4.5)
rejecting: directory-1.1.0.0, directory-1.0.1.2 (conflict:
base==4.9.0.0/installed-4.9..., directory => base>=4.2 && <4.4)
rejecting: directory-1.0.1.1, directory-1.0.1.0 (conflict:
base==4.9.0.0/installed-4.9..., directory => base>=4.1 && <4.3)
rejecting: directory-1.0.0.3, directory-1.0.0.0 (conflict:
base==4.9.0.0/installed-4.9..., directory => base<4.3)
rejecting: directory-1.2.6.1 (conflict: base==4.9.0.0/installed-4.9...,
directory => base<0)
Backjump limit reached (currently 2000, change with --max-backjumps or try to
run with --reorder-goals).