Remove usage of @hackage as much as possible in tests

[nmattia]

The @hackage repository (used for fetching prebuilt haskell libraries) is only available on Nix platforms. We should use it in tests only as little as necessary so that we can enable more tests for non-Nix platforms.

[mboes]

I believe this is already the case since #615. What is left to be done?

[nmattia]

Among others:

rules_haskell/tests/binary-with-data/BUILD

Line 26 in 2f4e30a

"@hackage//:process",

[picnoir]

I tagged the rules using hackage with requires_hackage.

After fixing this, we will be able to remove the corresponding flag in the circleci config: https://github.com/tweag/rules_haskell/blob/master/.circleci/config.yml#L18