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Perf regression for cabal repl -b <package>
3.10.1.0
#9005
Comments
Perf regression also for cabal-head commit (a191f0a)
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Most likely, we'd need a brave soul who could bisect it. |
Can't reproduce it: I have exactly the same numbers for cabal 3.10 and 3.6 (both installed with
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It is very weird, on my machine, this performance regression happens on almost every command. E.g.
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Oh, finally the logs tell me something.
So, this is a manifestation of #8930 |
Closing in favour of #8930 |
Describe the bug
The repl feature to open an interactive ghci session with some packages installed has a serious performance regression for 3.10.1.0.
Let's compare the versions, all executed with GHC 9.4.5.
Note, the ':q' is to immediately leave the session again.
Expected behavior
The performance is bad for all versions since there is basically no work to be done, but especially bad for 3.10.1.0.
System information
All cabal versions have been installed via ghcup today (6.6.2023).
GHC 9.4.5
Additional context
Add any other context about the problem here.
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