cabal: cannot configure Operads-1.0. It requires base <=4
For the dependency on base <=4 there are these packages: base-3.0.3.1 and
base-3.0.3.2. However none of them are available.
base-3.0.3.1 was excluded because of the top level dependency base -any
base-3.0.3.2 was excluded because of the top level dependency base -any