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Logs: liberachat/#haskell

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2021-08-02 21:50:35 <lambdabot> Plugin `compose' failed with: user error (Unknown command: "")
2021-08-02 21:51:08 <arkho> Because it's not my code, it's a dependency of a package I'm trying to install.
2021-08-02 21:51:59 <arkho> It won't build because it can't import that module, and I don't know what to do with that.
2021-08-02 21:52:12 × acidjnk_new quits (~acidjnk@p200300d0c72b9591e9224ac295505d06.dip0.t-ipconnect.de) (Ping timeout: 245 seconds)
2021-08-02 21:54:56 <arkho> My main question is, is it a Cabal thing, a GHC thing, or a Haskell thing? Where's the switch?
2021-08-02 21:55:11 <davean> It depends on where you turned it on
2021-08-02 21:55:40 <arkho> I don't recall ever doing that.
2021-08-02 21:57:21 <geekosaur> in any case, scientific 0.3.7.0 claims to be Safe Haskell-safe, so you should make sure you're using that version with Safe Haskell
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2021-08-02 22:00:59 <arkho> How do I check which version of scientific I have?
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2021-08-02 22:05:07 <geekosaur> cabal should have output it while building the package's dependencies
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2021-08-02 23:35:05 <delYsid> @hoogle [Maybe a] -> [a]
2021-08-02 23:35:06 <lambdabot> Data.Maybe catMaybes :: [Maybe a] -> [a]
2021-08-02 23:35:07 <lambdabot> System.Directory.Internal.Prelude catMaybes :: () => [Maybe a] -> [a]
2021-08-02 23:35:07 <lambdabot> Distribution.Compat.Prelude.Internal catMaybes :: [Maybe a] -> [a]
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2021-08-02 23:39:58 <lechner> Hi, it seems that getArgs attempts to translate UTF-8 byte strings to Unicode code points. Was getArgsBytes mentioned here ever implemented? Thanks! https://gitlab.haskell.org/ghc/ghc/-/issues/3309
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2021-08-02 23:44:46 <geekosaur> you want https://downloads.haskell.org/ghc/latest/docs/html/libraries/unix-2.7.2.2/System-Posix-Env-ByteString.html#v:getArgs
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2021-08-03 00:16:00 <benjaminhodgson> hello haskell friends! i was wondering if anyone here could help me dredge through the memory banks. I seem to remember reading a blog post in which the author showed that McBride-style indexed monads were equivalent in power to Atkey-style ones. Does anyone here remember such a post?
2021-08-03 00:16:22 <benjaminhodgson> i asked on reddit but no one seemed to recognise it, so i'm trying here :)
2021-08-03 00:17:10 <benjaminhodgson> The post would've been at least a couple of years ago
2021-08-03 00:19:28 <benjaminhodgson> When I say "equivalent in power", I mean they managed to figure out a way to turn an Atkey monad into a McBride one, which is obviously quite interesting because the McBride ones seem more powerful
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2021-08-03 00:20:46 <geekosaur> hm? wouldn't the other way around indicate that better, then?
2021-08-03 00:21:40 <benjaminhodgson> It's easy to turn a McBride monad into an Atkey one; this post was interesting since they managed to do it the other way as well
2021-08-03 00:21:57 <benjaminhodgson> just trying to find the post so i can reread it :)
2021-08-03 00:22:28 <benjaminhodgson> im just trying to find the post so i can reread it :)
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2021-08-03 00:24:08 <benjaminhodgson> or perhaps i'm going mad and i've imagined the whole thing.
2021-08-03 00:26:25 <Axman6> Maybe you were predicting the future and you need to write it
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2021-08-03 00:27:39 <benjaminhodgson> lol, a future in which i am much cleverer than i am
2021-08-03 00:27:58 <Axman6> this is just tying the knot
2021-08-03 00:28:27 <Axman6> the result will become more defined as it becomes more defined
2021-08-03 00:28:51 <c_wraith> unless it diverges and attempting to examine it will unravel the universe
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2021-08-03 00:29:38 <Axman6> from a type perspective, that is fine though
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