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2020-10-29 17:55:27 <carbolymer> totally
2020-10-29 17:55:32 <dminuoso> Finnish company making diver fins.
2020-10-29 17:55:40 <dminuoso> With Haskell
2020-10-29 17:55:40 <carbolymer> ...for finance
2020-10-29 17:55:48 tomsmeding looked it up and found out that indeed ghc does not officially support OS/2
2020-10-29 17:56:04 <geekosaur> neither does much of anyone else
2020-10-29 17:56:14 <geekosaur> eCS is still out thre somewhere though
2020-10-29 17:56:30 <monsterchrom> Even virtualbox doesn't quite support OS/2 guests, relegating to "community effort".
2020-10-29 17:56:44 <tomsmeding> ... hence the remote desktop
2020-10-29 17:56:58 <dminuoso> Will GHC run on DOS?
2020-10-29 17:57:06 × mirrorbird quits (~psutcliff@2a00:801:42b:7891:16b1:e53f:55b2:15e1) (Quit: Leaving)
2020-10-29 17:57:12 <dminuoso> You know, for the true masochists.
2020-10-29 17:57:15 × akad_ quits (~akad@109107030050.radomsko.vectranet.pl) (Ping timeout: 268 seconds)
2020-10-29 17:57:24 → fraktor joins (~walter@129.93.184.38)
2020-10-29 17:57:29 <geekosaur> I think you rapidly hit a memory problem
2020-10-29 17:58:01 <tomsmeding> hm, "s390-ibm-linux" is listed as a tier 2 support platform for ghc, but with ? and "No" under GHCi and NCG
2020-10-29 17:58:19 <fraktor> So I'm attempting to really wrap my head around some Haskell concepts, and I'm running into a couple of questions I don't know how to google. What is an example of a functor that is not applicative, or a functor that is not a monad?
2020-10-29 17:58:25 × DataComputist quits (~lumeng@static-50-43-26-251.bvtn.or.frontiernet.net) (Quit: Leaving...)
2020-10-29 17:59:32 × wroathe quits (~wroathe@c-73-24-27-54.hsd1.mn.comcast.net) (Ping timeout: 260 seconds)
2020-10-29 17:59:44 <dolio> data ReadRef a = forall e. RR (IORef e) (e -> a)
2020-10-29 18:00:01 × true-asset quits (~true-asse@185.244.214.217) ()
2020-10-29 18:01:03 → thir joins (~thir@p200300f27f0b7e004c18ab60065ea01b.dip0.t-ipconnect.de)
2020-10-29 18:01:16 <tomsmeding> for example, https://hackage.haskell.org/package/base-4.14.0.0/docs/Control-Exception.html#t:Handler
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2020-10-29 18:01:24 <hekkaidekapus> tomsmeding: petersen (currently offline) is quite dedicated to making GHC build on S390.
2020-10-29 18:01:38 <monsterchrom> dminuoso: I outdid that inb4. http://www.vex.net/~trebla/haskell/cont.xhtml#yield then scroll down to Exercises, look for exercise 5 "When I was a teenager".
2020-10-29 18:01:48 tomsmeding doesn't even properly know what S390 is, nor OS/2
2020-10-29 18:02:34 <hekkaidekapus> tomsmeding: <https://fedoraproject.org/wiki/Architectures/s390x>
2020-10-29 18:03:27 <monsterchrom> Actually maybe Hugs can run on 16-bit DOS.
2020-10-29 18:04:33 <tomsmeding> "so the assumption size_t == unsigned int fails here"
2020-10-29 18:04:45 <tomsmeding> the assumption carried from 32-bit systems, I assume
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2020-10-29 18:06:57 <carbolymer> tomsmeding, dminuoso, shit - I'm unable to reproduce this bug in clean hspec test :s
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2020-10-29 18:07:13 <monsterchrom> C compilers for 16-bit DOS are also very likely to satisfy size_t = sizeof(unsigned int) = 16.
2020-10-29 18:07:20 <tomsmeding> carbolymer: I was kind of fearing that :p
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2020-10-29 18:07:34 <monsterchrom> err I mean size_t = unsigned int, both 16 bits
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2020-10-29 18:08:29 <tomsmeding> carbolymer: can you print a line to stdout whenever newTVarIO is executed, and whenever that increment code is executed, showing which thread is doing it and what the new value is?
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2020-10-29 18:11:55 <dminuoso> carbolymer: run a grep for unsafePerformIO through your code base..
2020-10-29 18:12:12 <hekkaidekapus> tomsmeding: For a recent example, see the ‘Archives’ section at <https://koji.fedoraproject.org/koji/buildinfo?buildID=1620850>.
2020-10-29 18:12:26 <dminuoso> If STM is giving you race conditions, chances are you've sneaked unsafePerformIO or equivalent in.
2020-10-29 18:12:39 × britva quits (~britva@31-10-157-156.cgn.dynamic.upc.ch) (Quit: This computer has gone to sleep)
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2020-10-29 18:13:11 <tomsmeding> super fancy hekkaidekapus
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2020-10-29 18:14:27 × conal quits (~conal@64.71.133.70) (Quit: Computer has gone to sleep.)
2020-10-29 18:14:32 <hekkaidekapus> S390X is an IBM thing and petersen is a RedHat employee, so not really fancy :)
2020-10-29 18:14:39 <carbolymer> dminuoso, but how would it help? I'm just running it on isolated test case in hspec test - there's not much going on there
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2020-10-29 18:19:31 <carbolymer> tomsmeding, I've found a workaround, added a random delay (1ms;5ms) before each async
2020-10-29 18:19:37 <carbolymer> damn memory visibility!
2020-10-29 18:20:01 <tomsmeding> ... what architecture are you running that on, and how far are these threads apart
2020-10-29 18:20:05 <tomsmeding> physically
2020-10-29 18:20:27 tomsmeding is back in an hour or so
2020-10-29 18:20:38 × tput quits (~user@S0106a84e3fe54613.ed.shawcable.net) (Quit: ERC (IRC client for Emacs 27.1))
2020-10-29 18:20:59 <carbolymer> x86_64 inside VM, windows 10 Enterprise is host
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2020-10-29 18:21:13 <carbolymer> physically? idk
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