cabal: cannot configure buster-2.51. It requires base <=4.1.0.0
For the dependency on base <=4.1.0.0 there are these packages: base-3.0.3.1,
base-3.0.3.2, base-4.0.0.0 and base-4.1.0.0. However none of them are
available.
base-3.0.3.1 was excluded because base-4.3.0.0 was selected instead
base-3.0.3.1 was excluded because of the top level dependency base -any
base-3.0.3.2 was excluded because base-4.3.0.0 was selected instead
base-3.0.3.2 was excluded because of the top level dependency base -any
base-4.0.0.0 was excluded because base-4.3.0.0 was selected instead
base-4.0.0.0 was excluded because of the top level dependency base -any
base-4.1.0.0 was excluded because base-4.3.0.0 was selected instead
base-4.1.0.0 was excluded because of the top level dependency base -any