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Logs: liberachat/#haskell

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2021-06-24 20:04:07 <geekosaur> not generally
2021-06-24 20:04:22 × _ht quits (~quassel@82-169-194-8.biz.kpn.net) (Remote host closed the connection)
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2021-06-24 20:04:58 <geekosaur> if one of the two is entirely internal to the package that uses it, it can work. they use completely separate types, values, etc. and can't see each other
2021-06-24 20:05:26 <geekosaur> (but cabal/stack doesn't know about this and will reject build plans calling for it)
2021-06-24 20:06:44 <junkicide> Vq: I checked haskell-process-path-ghci and the value is "ghci" so it should be run version 8.8.4 rather than 8.6.x
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2021-06-24 20:07:08 × dunkeln quits (~dunkeln@188.71.193.140) (Ping timeout: 258 seconds)
2021-06-24 20:07:27 <geekosaur> junkicide, did you instalol a newer version after starting emacs (or possibly your wm), possibly via ghcup?
2021-06-24 20:07:52 <geekosaur> install*
2021-06-24 20:07:57 <safinaskar> geekosaur: but the first section of this answer ( https://stackoverflow.com/a/43140519 ) mentions project, which builds (and eventually fails to build) with 2 different versions of "text"
2021-06-24 20:08:00 <junkicide> geekosaur: I do remember using ghcup
2021-06-24 20:08:47 <geekosaur> safinaskar, yes, that used to happen and it's why cabal and stack exist
2021-06-24 20:09:24 <geekosaur> because ghc would blindly try to link them together and, as I said, the two versions can't see each other and will conflict when they collide
2021-06-24 20:09:50 <safinaskar> geekosaur: so modern cabal and stack forbids such build plans?
2021-06-24 20:10:01 <geekosaur> yes
2021-06-24 20:10:22 <junkicide> geekosaur: I misunderstood, if you mean to ask if I recently installed a new version then the answer is no.
2021-06-24 20:10:26 <safinaskar> geekosaur: this is sad
2021-06-24 20:10:37 <geekosaur> because most of the time they cause the errors in your link
2021-06-24 20:10:46 <sclv> its not sad, its the Only Correct Thing To Do
2021-06-24 20:10:48 <safinaskar> geekosaur: i think this restriction limits ecosystem grow
2021-06-24 20:10:57 <geekosaur> what sclv said
2021-06-24 20:11:11 <geekosaur> causing weird errors does not help the ecosystem grow
2021-06-24 20:11:34 <safinaskar> okey
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2021-06-24 20:15:18 <safinaskar> % do { let { x = 3; }; x; }
2021-06-24 20:15:18 <yahb> safinaskar: 3
2021-06-24 20:15:22 <safinaskar> why this works?
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2021-06-24 20:16:24 <geekosaur> do is just syntactic sugar, if you don't use the parts that require Monad (or Applicative) the result doesn't require them either
2021-06-24 20:16:30 <geekosaur> > do do do do do 5
2021-06-24 20:16:31 <lambdabot> 5
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2021-06-24 20:18:13 <safinaskar> ok, thanks
2021-06-24 20:18:15 <geekosaur> https://www.haskell.org/onlinereport/haskell2010/haskellch3.html#x8-470003.14 specifies the desugaring
2021-06-24 20:19:09 <geekosaur> ghc's is a little different because of ApplicativeDo and MonadFail which are not covered by the Report, but both follow the same general rule of not adding constraints unless specifically required
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2021-06-24 20:29:21 <maxon0> hi. does GHC 8.10.4 support RecordDotSyntax?
2021-06-24 20:29:32 <maxon0> can't find anything about it in release notes, so probably not
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2021-06-24 20:30:02 <maxon0> I meant 8.10.5
2021-06-24 20:30:53 <tbd> Does someone know if/how it is possible to increase the timeout until an idle connection is closed in the http-client family of libraries?
2021-06-24 20:31:35 <tbd> I see that connections are closed after 30 seconds if idle.
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2021-06-24 20:36:51 <geekosaur> maxon0, pretty sure it's only in 9.0.1 and later
2021-06-24 20:42:06 <geekosaur> don';t see it in 9.0.1 so may be 9.2
2021-06-24 20:43:02 <geekosaur> yeh, it's in 9.2
2021-06-24 20:47:11 ← manveru[m]1 parts (~manveru@user/manveru) ()
2021-06-24 20:47:20 <maxon0> ah, ok! any ideas when we can expect a stable 9.2 releaes?
2021-06-24 20:48:20 <geekosaur> no, they're cleaning up issues still
2021-06-24 20:49:42 <safinaskar> maxon0: you can install ghc 9.2 prerelease using ghcup
2021-06-24 20:50:33 <geekosaur> https://gitlab.haskell.org/ghc/ghc/-/milestones/365 suggests there's a fair amount of work still needed
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2021-06-24 21:04:44 <bitmapper> huh, GHC used to have a .net backend
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2021-06-24 21:06:05 ← safinaskar parts (~safinaska@109-252-90-89.nat.spd-mgts.ru) ()
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2021-06-24 21:09:21 <troydm> bitmapper: long time ago
2021-06-24 21:09:32 <bitmapper> yeah
2021-06-24 21:09:39 <troydm> bitmapper: obsolete now
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2021-06-24 21:13:06 <bitmapper> yeah it's just i've always heard that languages like scala/haskell couldn't target .net due to CIL being very inflexible in regards to types
2021-06-24 21:14:20 <geekosaur> you can target them as long as you're not interchanging data --- of course, the whole point of targeting them would be to take advantage of their libraries, so that makes it kinda pointless
2021-06-24 21:14:51 <geekosaur> (you're not bound by CIL if you're not exchanging data and can define your types as needed)
2021-06-24 21:19:22 <bitmapper> https://www.microsoft.com/en-us/research/wp-content/uploads/2016/02/babel01.pdf seems to say otherwise
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2021-06-24 21:21:36 <geekosaur> "Inparticular we aim for easier interoperability between com-ponents whose interfaces are expressed using function types,discriminated unions and parametric polymorphism, regard-less of the languages in which these components are implemented"
2021-06-24 21:22:01 <geekosaur> if you're not interooperating you can do whatever, but interop is the point of CIL
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2021-06-24 21:35:51 <maerwald> is there a working online repl for haskell?
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2021-06-24 21:37:57 <dsal> I had repl.it kind of working yesterday.
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