Move sources into src/

[phadej]

... away from top-dir.

This is in general good practice, and also helps with testing (e.g. one can use .ghc.environment.* file to compile local throw-away examples against compiled library)

[sjakobi]

helps with testing (e.g. one can use .ghc.environment.* file to compile local throw-away examples against compiled library)

Sounds like a neat trick! Is it documented anywhere or could you briefly explain it?

[phadej]

When you do cabal build and have write-ghc-environment-files: always enabled, cabal writes the .ghc.environment.<ghc-version-id> file. That file is then used by ghc (if no -package-env= supplied). Read about environment files in GHC manual.

It e.g. makes raw doctest work (which haskell-ci uses), or ghc my-example.hs. However, especially for later, you have to make sure that ghc doesn't find any other sources. Now as I say that, maybe -i would work too (-i without argument clears search path, including default current directory .)

[Bodigrim]

Dunno, current folder structure allows running throw-away examples without much hassle: I just drop examples in the root folder and run ghc Foo.hs, which compiles necessary bytestring modules on demand.

I do not have a strong opinion and do not particularly mind to change. But let's not get in a way of existing long-standing PRs such as #365 and wait until they are merged.

[phadej]

My point is exactly to not let GHC rebuild the (parts of) bytestring (with default settings, not using Cabal configuration, e,.g. developer flag).

This issue arised because debugging #393 was trickier that I felt it needs to be.

As there is no unanimous agreement, I'll just close this.