cabal: Could not resolve dependencies

[pxc3113]

zhiwei@zhiwei-Lenovo-Rescuer-15ISK:/media/zhiwei/DATA/haskell emulator/dcpu16-hs$ cabal install Resolving dependencies... cabal: Could not resolve dependencies: trying: dcpu16-hs-0.0.0.1 (user goal) next goal: base (dependency of dcpu16-hs-0.0.0.1) rejecting: base-4.9.1.0/installed-4.9... (conflict: base => ghc-prim==0.5.0.0/installed-0.5..., dcpu16-hs => ghc-prim>=0.2 && <0.3) rejecting: base-4.10.0.0, base-4.9.1.0, base-4.9.0.0, base-4.8.2.0, base-4.8.1.0, base-4.8.0.0, base-4.7.0.2, base-4.7.0.1, base-4.7.0.0, base-4.6.0.1, base-4.6.0.0, base-4.5.1.0, base-4.5.0.0, base-4.4.1.0, base-4.4.0.0, base-4.3.1.0, base-4.3.0.0, base-4.2.0.2, base-4.2.0.1, base-4.2.0.0, base-4.1.0.0, base-4.0.0.0, base-3.0.3.2, base-3.0.3.1 (constraint from non-upgradeable package requires installed instance) Dependency tree exhaustively searched.