Currently there are a few core libraries which have tests which are run by GHC's testsuite driver. This is inconvenient as changes in these tests require awkward cross-repository changes. Moreover, these tests do little to help correctness as the libraries' upstreams generally don't use GHC's testsuite driver in their own validation pipelines. I propose that we begin moving the follow sets of tests from their respective repositories into `testsuite/tests/libraries/...`: * `libraries/process/tests` * `libraries/parallel/tests` * `libraries/Win32/tests` See also: https://github.com/haskell/process/pull/268