#ocaml on 2017-11-03 — irc logs at freenode.irclog.whitequark.org

2017-07-13 10:09 companion_cube changed the topic of #ocaml to: Discussions about the OCaml programming language | http://www.ocaml.org | OCaml 4.05.0 release notes: https://caml.inria.fr/pub/distrib/ocaml-4.05/notes/Changes | Try OCaml in your browser: http://try.ocamlpro.com | Public channel logs at http://irclog.whitequark.org/ocaml

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00:31 <Denommus> hey guys, I've been working the past few weeks in this library: https://github.com/Denommus/react-react

00:32 <Denommus> I don't know how many people here are interested in Reason or in ReasonReact, but this allows one to use signals to produce components, abstracting away ReasonReact's reduce-style programming

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03:31 <SomeDamnBody> Does anybody know how to use core_kernel's seq with Ocamlgraph's iter_vertex's?

03:31 <SomeDamnBody> I would like to be able to terminate iter_vertex or some other function, and make it lazy with Seq.

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06:18 <rgrinberg> orbifx[m]: can the exception be caught when you start the server?

06:18 <rgrinberg> Don't think it can occur at any other time

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08:10 <orbifx[m]> rgrinberg: that happens at app.start right?

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10:10 <rgrinberg> orbifx[m]: yup

10:10 <orbifx[m]> rgrinberg: do you have an example where it's done?

10:11 <rgrinberg> I don't, but it seems fairly easy. Did you give it a try? If so, I can take a look if it's not working.

10:11 <orbifx[m]> I looked into it yesterday and got there, but Lwt's `catch` requires a function where unit is passed, where as App.start needs something else

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20:31 <barcabuona> hey guys i'm having some trouble with opam (installing lwt)

20:31 <barcabuona> https://pastebin.com/sy65uzP7

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20:33 <Drup> barcabuona: can you pastebin the output of `opam config report` ?

20:33 <barcabuona> https://pastebin.com/SnD123Zb

20:34 <barcabuona> this is the stderr: https://pastebin.com/kYGJy8cC

20:34 <Drup> which distribution ?

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20:35 <barcabuona> and this finally is the log indicated by DEBUG: https://pastebin.com/WTgBgG9Y (it is what i can assume to be the compilation error)

20:36 <barcabuona> Drup: archlinux

20:38 <Drup> I think the simplest solution is to avoid the "system" switch

20:38 <reynir> Yea, the system switch on archlinux is just breakage waiting to happen

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20:40 <barcabuona> i'm afraid i don't really know what that is

20:40 <reynir> opam switch --help

20:41 <barcabuona> it says i'm using System compiler 4.05.0

20:42 <barcabuona> but the latest is 4.06.0

20:42 <barcabuona> so i should switch to the latest one you say?

20:45 <reynir> no, I would suggest you use opam switch install to install whatever version. Then all your opam packges won't break every time the system/pacman compiler is upgraded

20:51 <barcabuona> this is because archlinux compiler is often broken?

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20:51 <reynir> no

20:52 <reynir> it's because opam doesn't expect the compiler changing under its feet so to speak

20:52 <barcabuona> so I need to reset opam's state?

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20:52 <barcabuona> or install a manual compiler

20:53 <reynir> uh yea, I guess you could reinstall all packages after each system compiler upgrade

20:54 <reynir> But a 'manual' compiler is far more convenient, I would say

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21:13 <barcabuona> i guess if you use a lot of packages, but i can bear reinstalling utop each time

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21:14 <barcabuona> is there a way to reset opam's state?

21:16 <barcabuona> now i get other errors with the new compiler XD https://pastebin.com/LrMS9fwG

21:19 <barcabuona> i'm just removing .opam, see if that works...

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21:31 <reynir> is 4.06 released yet?

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21:32 <reynir> barcabuona: there's been a transition from mutable strings to immutable strings. 4.06 makes immutable strings the default IIRC, and I guess zed isn't up to date on that

21:33 <barcabuona> i figured it was something like that thanks

21:33 <lobo> reynir: i've just seen the new switch on "opam update" today and there is http://caml.inria.fr/pub/distrib/ocaml-4.06/

21:33 <barcabuona> why such a big transition?

21:33 <reynir> lobo: cool!

21:34 <barcabuona> guys i tried removing all state and lwt still has problems

21:35 <barcabuona> but if i use the new ocaml i get a breakage with zed

21:35 <barcabuona> so wat now? :(

21:35 <barcabuona> (and aspcud is broken again...)

21:37 <barcabuona> https://pastebin.com/01XY6v90 this is the real error

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21:51 <barcabuona> well i just installed 4.05.0 with opam switch and now it workd

21:52 <barcabuona> thanks guys

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21:53 <octachron> barcabuona, "4.05" is probably a good choice; 4.06 is being officially released right now … so it is a bit early to use this version and expect stability

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