Thanks, there seems to be dependency issues:

cabal install --allow-newer=base -j3 cabal-install
Resolving dependencies...
In order, the following would be installed:
deepseq-1.3.0.2 (latest: 1.4.0.0) (new version)
bytestring-0.10.4.1 (new version)
containers-0.5.6.2 (reinstall) changes: deepseq-1.4.0.0 -> 1.3.0.2
pretty-1.1.2.0 (new version)
text-1.2.0.3 (reinstall) changes: bytestring-0.10.6.0 -> 0.10.4.1,
deepseq-1.4.0.0 -> 1.3.0.2
parsec-3.1.7 (reinstall) changes: bytestring-0.10.6.0 -> 0.10.4.1
network-uri-2.6.0.1 (new package)
time-1.4.2 (latest: 1.5.0.1) (new version)
random-1.1 (reinstall) changes: time-1.5.0.1 -> 1.4.2
unix-2.7.1.0 (reinstall) changes: bytestring-0.10.6.0 -> 0.10.4.1,
time-1.5.0.1 -> 1.4.2
directory-1.2.1.0 (new version)
network-2.6.0.2 (new package)
HTTP-4000.2.19 (new package)
process-1.2.1.0 (reinstall) changes: deepseq-1.4.0.0 -> 1.3.0.2,
directory-1.2.1.1 -> 1.2.1.0
Cabal-1.20.0.3 (new version)
zlib-0.5.4.2 (new package)
cabal-install-1.20.0.6 (new package)
cabal: The following packages are likely to be broken by the reinstalls:
semigroups-0.16.0.1
void-0.7
contravariant-1.2.0.1
semigroupoids-4.2
bifunctors-4.2
comonad-4.2.2
parallel-3.2.0.6
hscolour-1.20.3
hpc-0.6.0.2
ghc-7.10.0.20141222
hoopl-3.10.0.2
hastache-0.6.1
haskeline-0.7.2.0
cereal-0.4.1.0
monad-par-extras-0.3.3
binary-0.7.2.3
bin-package-db-0.0.0.0
Cabal-1.22.0.0
attoparsec-0.12.1.2
abstract-deque-0.3
Glob-0.7.5
scientific-0.3.3.3
polyparse-1.11
cpphs-1.18.6
haskell-src-exts-1.16.0.1
hashable-1.2.3.1
unordered-containers-0.2.5.1
blaze-builder-0.3.3.4
MonadRandom-0.3.0.1
extra-1.0
cmdargs-0.10.12
directory-1.2.1.1
ansi-terminal-0.6.2.1
ansi-wl-pprint-0.6.7.1
Use --force-reinstalls if you want to install anyway.