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2020-10-03 03:10:08 <dsal> cohn: You're describing everything in my life.
2020-10-03 03:10:27 <cohn> whoa.
2020-10-03 03:10:34 <iqubic> dsal: I do love a fresh nixos install.
2020-10-03 03:10:42 <dsal> The good news is, though I've never found anything and felt like I was too late, I still hopefully have some time left.
2020-10-03 03:10:47 <iqubic> Haskell and Nix work so well together.
2020-10-03 03:10:54 cohn must be in The Matrix
2020-10-03 03:11:08 <dsal> nixos is another religion that bumps up against people in this channel at times. heh
2020-10-03 03:12:01 <dsal> iqubic: are you using haskell.nix? I'm super lazy. It's nearly zero effort for me to build my packages, but it's a lot effort for the computer.
2020-10-03 03:12:42 <cohn> I just want to learn everything I can. I use what works best for what I need and leave the religous wars to everybody else
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2020-10-03 03:13:53 <cohn> e.g. I use vim, Emacs, and VS Code every day for different things. I've played with Nix a little bit, as well ask stack and cabal.
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2020-10-03 03:14:15 <dsal> Sure, sure. nixos is a Linux distribution that solves all of my OS problems. It's not super relevant here.
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2020-10-03 03:15:01 <dsal> I think stack is a little less popular here, but I've not been able to replace it yet. Each time I try, there's something that it does that I have a hard time replacing, so I don't bother.
2020-10-03 03:15:27 × falafel quits (~falafel@2605:e000:1527:d491:a806:37fa:6971:2798) (Ping timeout: 240 seconds)
2020-10-03 03:15:37 <cohn> nix seems very well suited to use with Docker. But that could be overkill.
2020-10-03 03:16:19 <dsal> nix is an alternative to docker in many ways. You end up with much less overhead and more resource sharing and stuff. That said, I run docker on nixos when I need it. *shrug*
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2020-10-03 03:16:46 <cohn> huh, never thought about it that way
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2020-10-03 03:17:49 <dsal> I do a build of my project, copy it into an external nix store, and then pull it down and run the specific version where I need it. I run a bunch of junk in aws on a machine too small to actually do the build, so I spin up a big machine to do the build, then copy artifacts out and upgrade when needed.
2020-10-03 03:18:11 <dsal> Something about my lazy haskell.nix thing means it often ends up building like, all of ghc to make a binary. A little expensive, but it's just zero effort on my part.
2020-10-03 03:19:42 <dsal> I had a small fix of my mqttd a day or so ago and the build process took *hours* on a large AWS machine. It actually caches all those artifacts, but I don't keep any of that state.
2020-10-03 03:20:10 <dsal> haskell *can* compile very slowly. Some of my Advent of Code solutions run in O(1) time because I made the compiler compute the answer. heh
2020-10-03 03:21:11 → drbean joins (~drbean@TC210-63-209-81.static.apol.com.tw)
2020-10-03 03:22:58 <cohn> that's cheating. ;)
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2020-10-03 03:23:35 <dsal> Not in that case, but it was just to do it.
2020-10-03 03:24:05 <cohn> heh
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2020-10-03 03:24:28 <dsal> I liked running the benchmarks and having it say my solution was around 6 ns.
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2020-10-03 03:26:20 <monochrom> If you can compile slowly, you can run quickly. >:)
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2020-10-03 03:38:39 <kreyren> i asked this question in #haskell-stack but reasking here as it seems that the channel has low traffic
2020-10-03 03:38:43 <kreyren> i am keep getting https://dpaste.com/ASUFJEDKC.txt running build target in makefile http://ix.io/2zyp -> How do i make sure it's not trying to halt my system over time
2020-10-03 03:38:47 <kreyren> basically fails to compile each time, system info http://ix.io/2zyr
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2020-10-03 03:53:16 <kreyren> created swapfile with 2G and that made it to continue past the breakpoint so i guess there is an issue with resource allocating on linux
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2020-10-03 03:58:13 <c_wraith> there are a couple of libraries that do so much inlining that they take up ridiculous amounts of memory to compile
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2020-10-03 03:58:48 <dsal> I think I end up building those in parallel
2020-10-03 03:58:52 <c_wraith> vector-algorithms is the worst offender in my exerience, but there are probably some others.
2020-10-03 03:59:21 <dsal> kreyren: you may consider reducing concurrency
2020-10-03 03:59:52 <kreyren> dsal, i am not upstream can you elaborate?
2020-10-03 04:00:21 <dsal> You can limit jobs in ~/.stack/config.yaml
2020-10-03 04:00:58 <dsal> https://docs.haskellstack.org/en/stable/yaml_configuration/#jobs
2020-10-03 04:01:19 <kreyren> checking
2020-10-03 04:02:30 <dsal> -j1 will take longer, but use less memory
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2020-10-03 04:40:26 <hololeap> class Foo a where ; type Bar a ; foo :: Bar a -> Maybe Bool
2020-10-03 04:40:46 <hololeap> why is GHC trying to make me turn on AllowAmbiguousTypes for this?
2020-10-03 04:41:07 <c_wraith> because it has no way to infer `a' from a call to foo
2020-10-03 04:41:27 <ski> `Bar' is not injective
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