2025/04/01

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2025-04-01 18:10:41 +0200tomsmedingis afk for a while
2025-04-01 18:09:52 +0200 <hellwolf> right. i didn't realize it was closed and fixed.
2025-04-01 18:09:36 +0200 <tomsmeding> you can indeed reply to the same issue; it's likely that you'll subsequently be instructed to create a new issue instead
2025-04-01 18:09:00 +0200 <hellwolf> 9.10
2025-04-01 18:08:56 +0200 <tomsmeding> the fix for that PR is in 9.6; what GHC version are you using?
2025-04-01 18:08:44 +0200 <hellwolf> I see, indeed. I might as well report one more sample to the same issue.
2025-04-01 18:08:04 +0200 <tomsmeding> this actually sounds extemely related to https://gitlab.haskell.org/ghc/ghc/-/issues/22057
2025-04-01 18:07:17 +0200 <hellwolf> mxs_ & mxs_'
2025-04-01 18:07:08 +0200 <hellwolf> https://paste.tomsmeding.com/wRfhejVB
2025-04-01 18:06:48 +0200tomsmedingsuspects mx1_
2025-04-01 18:06:36 +0200 <hellwolf> let me find the error message, one sec
2025-04-01 18:06:19 +0200 <tomsmeding> which variable do you get a warning about?
2025-04-01 18:05:57 +0200 <hellwolf> here: https://paste.tomsmeding.com/JU7QBp5w
2025-04-01 18:05:53 +0200 <tomsmeding> in general, if there's an issue in GHC, do report it; that's what the issue tracker is for
2025-04-01 18:05:25 +0200 <tomsmeding> what is the case? Is it reasonable for GHC to detect it?
2025-04-01 18:05:22 +0200 <int-e> the other versions do exist :)
2025-04-01 18:04:55 +0200 <hellwolf> Considering the number of GHC issues, I don't think I should report and create one more issue there, for now.
2025-04-01 18:04:55 +0200 <hellwolf> I had a minor bug, I used bang pattern in a TH quote, and GHC complaining that I have unused variable, but I clearly used it.
2025-04-01 18:04:30 +0200 <int-e> good catch, thanks
2025-04-01 18:04:22 +0200 <tomsmeding> ah
2025-04-01 18:04:19 +0200 <int-e> so it fell back on 9.6.6
2025-04-01 18:04:16 +0200 <tomsmeding> what did it do :p
2025-04-01 18:04:09 +0200 <int-e> I don't actually have 9.12.2 built, /opt/ghc-9.12.2 is empty
2025-04-01 18:03:36 +0200 <int-e> oh that's my bad
2025-04-01 18:03:15 +0200 <tomsmeding> I get a BangP both with 9.12.1 and 9.12.2
2025-04-01 18:02:58 +0200 <int-e> evidently?
2025-04-01 18:02:21 +0200 <tomsmeding> it broke again in 9.12?
2025-04-01 18:02:20 +0200 <int-e> So this was broken for a fairly long time.
2025-04-01 18:02:12 +0200 <tomsmeding> _wat_
2025-04-01 18:01:59 +0200 <tomsmeding> oh wow
2025-04-01 18:01:42 +0200 <int-e> tomsmeding: I was doing this experiment: https://paste.tomsmeding.com/Vbpiah8r
2025-04-01 18:00:30 +0200 <tomsmeding> int-e: the thing about parentheses being relevant was just a brainfart; I think I completely misremembered this: https://gitlab.haskell.org/ghc/ghc/-/issues/22057
2025-04-01 18:00:18 +0200 <hellwolf> https://www.reddit.com/r/haskell/comments/kmk6q/the_best_ghc_bug_ever/
2025-04-01 17:59:34 +0200 <hellwolf> I remember SPJ said once that GHC deleted files at some point. Talking about better type system for managing side effects.