Add ghc flags

[nzhang-zh]

Specifically unused imports, but also explore other necessary flags.

Also look at Nix's buildStrictly and other overrideCabal options.

[nzhang-zh]

May I suggest turning buildStrictly back on rather than specifying individual flags?

And maybe use per file pragmas for source files that should be exempt from certain warnings.
e.g. {-# OPTIONS_GHC -fno-warn-orphans #-}

[CMCDragonkai]

Yea if you try, see why our ci/cd is failing too.

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On 1 December 2020 9:44:33 am AEDT, nzhang-zh ***@***.***> wrote: May I suggest turning `buildStrictly` back on rather than specifying individual flags? And maybe use per file pragmas for source files that should be exempt from certain warnings. e.g. `{-# OPTIONS_GHC -fno-warn-orphans #-}` -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: #28 (comment)

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