Reading available packages... Resolving dependencies... cabal: cannot configure leksah-0.10.0.4. It requires base >=4.0.0.0 && <4.4, ghc >=6.10.1 && <7.1, leksah-server ==0.10.* and ltk ==0.10.* For the dependency on base >=4.0.0.0 && <4.4 there are these packages: base-4.0.0.0, base-4.1.0.0, base-4.2.0.0, base-4.2.0.1, base-4.2.0.2, base-4.3.0.0 and base-4.3.1.0. However none of them are available. base-4.0.0.0 was excluded because of the top level constraint 'base installed' which means that only installed instances of the package may be selected. base-4.1.0.0 was excluded because of the top level constraint 'base installed' which means that only installed instances of the package may be selected. base-4.2.0.0 was excluded because of the top level constraint 'base installed' which means that only installed instances of the package may be selected. base-4.2.0.1 was excluded because of the top level constraint 'base installed' which means that only installed instances of the package may be selected. base-4.2.0.2 was excluded because of the top level constraint 'base installed' which means that only installed instances of the package may be selected. base-4.3.0.0 was excluded because of the top level constraint 'base installed' which means that only installed instances of the package may be selected. base-4.3.1.0 was excluded because of the top level constraint 'base installed' which means that only installed instances of the package may be selected. There is no available version of ghc that satisfies >=6.10.1 && <7.1 For the dependency on leksah-server ==0.10.* there are these packages: leksah-server-0.10.0, leksah-server-0.10.0.3 and leksah-server-0.10.0.4. However none of them are available. leksah-server-0.10.0 was excluded because it could not be configured. It requires base >=4.0.0.0 && <4.4, ghc >=6.10.1 && <7.1, haddock >=2.7.2 && <2.10 and ltk >=0.9 && <1.0 leksah-server-0.10.0.3 was excluded because it could not be configured. It requires base >=4.0.0.0 && <4.4, ghc >=6.10.1 && <7.1, haddock >=2.7.2 && <2.10 and ltk >=0.9 && <1.0 leksah-server-0.10.0.4 was excluded because it could not be configured. It requires base >=4.0.0.0 && <4.4, ghc >=6.10.1 && <7.1, haddock >=2.7.2 && <2.10 and ltk >=0.9 && <1.0 For the dependency on ltk ==0.10.* there are these packages: ltk-0.10.0, ltk-0.10.0.3 and ltk-0.10.0.4. However none of them are available. ltk-0.10.0 was excluded because it could not be configured. It requires base >=4.0.0.0 && <4.4 and ghc <7.3 ltk-0.10.0.3 was excluded because it could not be configured. It requires base >=4.0.0.0 && <4.4 and ghc <7.3 ltk-0.10.0.4 was excluded because it could not be configured. It requires base >=4.0.0.0 && <4.4 and ghc <7.3