regex-tdfa compile time increase from 61s (8.8.1) to 75s (HEAD)
I was installing regex-tdfa-1.3.0 for an issue and I realized that it takes much longer to install with GHC HEAD (release settings -- no build.mk). Here's how much cabal new-build
takes in GHC 8.6.4, 8.8.1, and HEAD:
- 8.6.4: cabal new-build 58,13s user 1,24s system 99% cpu 59,445 total
- 8.8.1: cabal new-build 61,23s user 1,39s system 99% cpu 1:03,12 total
- HEAD: cabal new-build 75,98s user 1,08s system 99% cpu 1:17,15 total
Note a huge difference maybe, but it's still one of the packages that'll take longer to compile with the new release, so this may worth investigating as a part of the compile time performance work.