tvl-depot/users/grfn/xanthous/src
sterni 2f750e4a14 refactor(grfn/xanthous): avoid unnecessary recompilation
hpack is a bit dumb when generating the list of modules for a cabal
file's component if multiple of them live in the same directory.
Specifically it seems to assume that all modules in the source-dirs
of a particular component are also necessary for its compilation.

This is quite bad in the case of xanthous since both library and
executable have source-dirs: src, so all modules will be compiled
twice: Once for the library and then again for the executable
despite it depending on the library (actually 4 times in total
since we need to build a unprofiled and profiled object for each
module…).

To fix this we just move Main.hs into its own directory and change
the executable's source-dirs, so hpack doesn't get confused anymore.
Since all components now have their own source-dirs, unnecessary
redundant compilation should be down to 0. The diff of the cabal
file shows quite nicely how many module recompilation we've gotten
rid of.

Change-Id: I2df4fab9b0299b3a2b5d3005508c79b2d9796039
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3533
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: grfn <grfn@gws.fyi>
2021-09-11 16:00:12 +00:00
..
Data/Aeson/Generic feat(xanthous): Track the volume and density of item types 2021-06-23 21:52:08 +00:00
Xanthous fix(xanthous): Fix display of square/cubic units 2021-07-06 18:32:08 +00:00