Dependencies specified in cabal file are conflicting

[parvmor]

On installing with the cabal file the following conflicts arise:

Resolving dependencies...
cabal: Could not resolve dependencies:
trying: ot-0.2.1.0 (user goal)
next goal: ghc (dependency of ot-0.2.1.0)
rejecting: ghc-8.0.1/installed-8.0... (conflict: ghc =>
binary==0.8.3.0/installed-0.8..., ot => binary>=0.5.1.1 && <0.8)
Dependency tree exhaustively searched.

Resolving this keeps on giving more dependency conflicts. One solution that worked involved removing of versioning in the packages:

25,32c25,32
<   Build-depends:       base,
<                        text,
<                        aeson,
<                        attoparsec,
<                        QuickCheck,
<                        binary,
<                        either,
<                        mtl,
---
>   Build-depends:       base >= 4 && < 5,
>                        text >= 1.0 && < 1.3,
>                        aeson >= 0.7 && < 0.11,
>                        attoparsec >= 0.10.1.1 && < 1,
>                        QuickCheck >= 2.7 && < 2.9,
>                        binary >= 0.5.1.1 && < 0.9,
>                        either >= 4.1.2 && < 5,
>                        mtl >= 2.1.3.1 && < 3,

Installing with --allow-newer also works!