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2021-03-13 13:24:55 → RamZess joins (~osboxes@213.142.184.77)
2021-03-13 13:25:18 <RamZess> hello everyone
2021-03-13 13:25:28 → heatsink joins (~heatsink@2600:1700:bef1:5e10:c79:3d13:d977:c947)
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2021-03-13 13:30:02 × RamZess quits (~osboxes@213.142.184.77) (Quit: leaving)
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2021-03-13 13:31:21 <geekosaur> hello
2021-03-13 13:31:24 → RamZess joins (~osboxes@213.142.184.77)
2021-03-13 13:31:27 <geekosaur> oh, they left
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2021-03-13 13:33:00 <RamZess> Is anybody here alive and ready to help? I have a couple of beginner questions about stack and ghci.
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2021-03-13 13:33:29 <siraben> RamZess: don't ask to ask, just ask!
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2021-03-13 13:37:10 × forgottenone quits (~forgotten@176.42.24.172) (Remote host closed the connection)
2021-03-13 13:37:33 <Lycurgus> but it's OK that you already did
2021-03-13 13:37:59 <Lycurgus> it's just common IRC etiquette not to
2021-03-13 13:38:05 → tromp joins (~tromp@dhcp-077-249-230-040.chello.nl)
2021-03-13 13:38:12 <gentauro> RamZess: as long as peeps don't reply: "You should just drop stack and use cabal" :P (happens from time to time, sadly)
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2021-03-13 13:39:41 → Tario joins (~Tario@201.192.165.173)
2021-03-13 13:39:50 Lycurgus recommends set .stack yaml to lts 8.6.5 and use stack repl
2021-03-13 13:40:00 → Hobbestigrou1 joins (~Hobbestig@195.140.213.38)
2021-03-13 13:40:49 <geekosaur> the latter in particular, since stack wants to manage ghc itself so you can't just run ghci, you need to run it via stack
2021-03-13 13:41:18 <RamZess> Let say I wanna play with standalone hs file (~/dev/HelloWorld.has). There is no stack project there but I have stack installed. When I start "stack ghci -packages xzy" it says that I'm using "global-project" and install packages into ~/.stack/snapshots. I want to use permament for "global-project" some packages. I put them into "packages" ~/.stack/global-project/stack.yaml but it does not work. Any
2021-03-13 13:41:24 <RamZess> suggestions?
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2021-03-13 13:42:58 × tromp quits (~tromp@dhcp-077-249-230-040.chello.nl) (Ping timeout: 245 seconds)
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2021-03-13 13:45:33 × stree quits (~stree@68.36.8.116) (Ping timeout: 264 seconds)
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2021-03-13 13:50:01 × Jd007 quits (~Jd007@162.156.11.151) (Quit: Jd007)
2021-03-13 13:50:07 <gentauro> RamZess: when I use `stack + ghci` for scripting I do something like this -> https://gitlab.com/spisemisu/pcx-utils/-/blob/master/src/pcf-v61-teams.hs#L1-9
2021-03-13 13:50:49 <gentauro> oh, that script doesn't have packages. W8 a second
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2021-03-13 13:51:36 <gentauro> RamZess: there you go -> https://gitlab.com/spisemisu/remove-facebook-content/-/blob/master/RFC.hs#L1-13
2021-03-13 13:52:03 <gentauro> RamZess: the `trick` is to call add packages with double dash -> `--package aeson`
2021-03-13 13:52:06 <gentauro> ;)
2021-03-13 13:54:25 <RamZess> gentauro: I yep double dash, it was a mistake. I want to have kind of a standard set of packages that are already references (without --package ..) when I start stack gchi
2021-03-13 13:57:01 <RamZess> gentauro: when I use the .hs with script annotated packages would it be correct intepreted with "stack ghci"?
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2021-03-13 14:09:34 → timCF joins (~i.tkachuk@m91-129-99-43.cust.tele2.ee)
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2021-03-13 14:15:57 <timCF> Hello! Can anybody recommend elegent way to compose pipline of multiple `MonadIO m => prev -> m (Either Error next)` expressions without tons of `case` expressions? `next` type is used as `prev` in next expression in pipline
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2021-03-13 14:22:09 × frozenErebus quits (~frozenEre@94.128.82.20) (Ping timeout: 264 seconds)
2021-03-13 14:22:52 → CrazyPython joins (~crazypyth@98.122.164.118)
2021-03-13 14:23:09 <absence> timCF: check out ExceptT in transformers
2021-03-13 14:24:28 × clog quits (~nef@bespin.org) (Ping timeout: 260 seconds)
2021-03-13 14:24:36 <absence> "MonadIO m => prev -> ExceptT Error m next" can be composed using normal monad operators, like =<<, <=<, etc
2021-03-13 14:25:41 → ddellacosta joins (~ddellacos@86.106.143.10)
2021-03-13 14:25:45 → Sornaensis joins (~kvirc@077213203030.dynamic.telenor.dk)
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2021-03-13 14:26:28 <timCF> absence: thanks!
2021-03-13 14:27:25 <Philonous> Is there a tool that automatically generates / updates package version bounds in a cabal file?
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2021-03-13 14:31:22 <absence> if i have an MVector, and a function that takes Vector, can i somehow make them talk to eachother without creating a copy?
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2021-03-13 14:32:35 → frozenErebus joins (~frozenEre@94.128.82.20)
2021-03-13 14:34:10 <sm[m]> Philonous: cabal-bounds, I'm thinking
2021-03-13 14:35:57 → Stanley00 joins (~stanley00@unaffiliated/stanley00)
2021-03-13 14:37:17 <sm[m]> RamZess, this works: in ~/.ghci add :set -package pretty-simple, etc.
2021-03-13 14:37:37 <timCF> absence: seems like ExceptT relies on throwing/catching runtime exceptions? This does not sounds good. Version of code with tons of `<-` and `case` expressions used to compose `IO Either a b` expressions is ugly, but at least error handling is pure
2021-03-13 14:38:08 <sm[m]> RamZess: but next time those packages aren't installed, eg after a global stackage resolver update, GHCI won't start
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2021-03-13 14:41:33 <RamZess> sm[m] ! thax It works!
2021-03-13 14:42:17 <absence> timCF: it doesn't, it just sounds like it because of the names used for the functions and types. if you look at the source code, it's just does the pattern matching behing the scenes
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2021-03-13 14:43:47 <absence> timCF: it's identical to MaybeT for Maybe in that regard, but due to an unfortunate historical incident, the name EitherT was already taken, so we're stuck with the somewhat misleading ExceptT
2021-03-13 14:43:53 <timCF> absence: hmm, I've just got confused of lots of `SomeException` handlers in this example http://www.mega-nerd.com/erikd/Blog/CodeHacking/Haskell/what_do_you_mean.html
2021-03-13 14:44:37 <sm[m]> np
2021-03-13 14:45:53 <absence> timCF: i don't think the ExceptT in that example is the same one
2021-03-13 14:46:11 → monadmatt joins (~user@119-17-128-101.771180.mel.nbn.aussiebb.net)
2021-03-13 14:47:13 <absence> timCF: https://hackage.haskell.org/package/transformers-0.5.6.2/docs/Control-Monad-Trans-Except.html#t:ExceptT
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2021-03-13 14:47:49 <timCF> absence: thanks!
2021-03-13 14:50:03 × merijn quits (~merijn@83-160-49-249.ip.xs4all.nl) (Ping timeout: 245 seconds)
2021-03-13 14:54:17 <Philonous> absence, There's unsafeFreeze, but it's unsafe, as the name implies. In particular, if you change the MVector later you might get unexpected behaviour
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