<d_bot>
<mimoo> I'm a bit confused by the field `targets` in a dune file
<d_bot>
<mimoo> it doesn't seem useful, at least for a number of usecases, yet it seems mandatory?
<d_bot>
<mimoo> (in a `(rule`)
<d_bot>
<mimoo> you'd think `dune build` would take care of installing dependencies for you, but for some reason it doesnt 😐
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<d_bot>
<mimoo> any idea what that error could be?
<d_bot>
<mimoo>
<d_bot>
<mimoo> ```
<d_bot>
<mimoo> Undefined symbols for architecture x86_64:
<d_bot>
<mimoo> "_caml_startup", referenced from:
<d_bot>
<mimoo> std::sync::once::Once::call_once::_$u7b$$u7b$closure$u7d$$u7d$::h90304a8759fb12e3 (.llvm.14433646130140889871) in librust_thing.a(ocaml_interop-07099bb348900dff.ocaml_interop.42icvaiy-cgu.12.rcgu.o)
<d_bot>
<mimoo> core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::ha8e1ce97a6835316 (.llvm.14433646130140889871) in librust_thing.a(ocaml_interop-07099bb348900dff.ocaml_interop.42icvaiy-cgu.12.rcgu.o)
<d_bot>
<mimoo> (maybe you meant: _caml_startup_code_exn, _caml_startup_aux , _caml_startup_code )
<d_bot>
<mimoo> ```
<d_bot>
<mimoo>
<d_bot>
<mimoo> here librust_thing.a is a rust library
<d_bot>
<mimoo> ok I got it, `rules` behave like a Makefile inside of a `dune` file: a rule will cache result unless a file in `(deps` has changed. And `(target(s)` is supposed to be the result of the rule
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<d_bot>
<mimoo> looks like I can't open a library that uses external functions (in my case rust, not C) in utop (using `dune utop .`)
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<d_bot>
<rgrinberg> Yeah, dune utop has some problems loading stubs.
<d_bot>
<rgrinberg> Are you trying to use a rust lib in OCaml?
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<fluxm>
hmm, just looked up on the topic and this exists: https://docs.rs/ocaml/0.22.0/ocaml/ . how safe that is, surely safer than the direct C interface?
<fluxm>
I mean I guess you can just use wrong parametes/types, but if you don't do that level mistakes, how hard does it hold your hand.. :)
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<kluk>
Hi, I am using OCaml version 4.12.0+multicore, I saw a presentation ( https://www.youtube.com/watch?v=z8SI7WBtlcA ) where the effects appear in the type signature, but that is not the case for me; do I have to enable something, or was it just a trick during the presentation?
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<octachron>
The presentation is for a prototype of a typed effect system which is not part of the multicore branch.
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<kluk>
octachron thank you!
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<adrien>
heh : ##ocaml on freenode (to which people were redirected until a few minutes ago) is solely administred by staffers
<adrien>
the access list has not been copied from #ocaml
<adrien>
talk about doing things nicely
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<adrien>
I just fixed my IRC bot so (well, derived from calculon, itself derived from irc-client) so it builds and soon it'll randomly spam people until they leave freenode
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<companion_cube>
:D
<companion_cube>
there's a patch for SASL btw
<companion_cube>
if you want to connect it here
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<adrien>
I don't need it since my server is at home ;-)
<adrien>
but I'll update soon-ish anyway ;-)
<adrien>
first thing I've done so far is to make the bot detect the current wave of spam that occurs on some channels/networks
<companion_cube>
oh nice
<companion_cube>
my bots are on a DO VPS, so I needed SASL even for connecting
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<d_bot>
<Boris Povolotsky> Hello everyone, I'm sorry if that's not appropriate to ask here...
<d_bot>
<Boris Povolotsky> Can you build auto-clicker style scripts/apps with OCaml?
<companion_cube>
what's that? :p
<adrien>
I guess, GUI automation stuff
<adrien>
I'm not aware of anything cross-platform for that so that would be the first topic
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<reynir>
I think I saw a browser automation thing somewhat recently
<reynir>
yes, brr
<reynir>
ok I might have misunderstood what that package is about..
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<superherointj>
Is there some consensus from where distributions should download OCaml compiler package? From github releases or caml.inria.fr? Where is the ideal place to download it?
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<superherointj>
octachron ^
<octachron>
superherointj, github is the far more reliable source. If this is an issue, don't hesitate to bring it up on the issue tracker.
<octachron>
The caml.inria.fr site is hosted on the Gallium/Cambium's team server at Inria Paris.
<octachron>
And there is no one on call to ensure that it is always available. (there was at 12 hours outage last week for example)
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<superherointj>
The problem with GitHub is it doesn't have the older releases.
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<neiluj>
Hello! If an 'include A' is used in a module B, do I have to copy the signature of A into B's signature?
<neiluj>
In the mli file.
<Fardale>
You can do "include module type of A" in the mli file for B
<neiluj>
Thank you very much Fardale, exactly what I needed!
<vsiles>
I have a macro for that now :D Best thing I learned this year
<superherointj>
I was considering to update the ocaml Nix(OS) package and on the meta.downloadPage I wasn't sure what to set. As you said, GitHub offers better infrastructure. Would be desirable if OCaml project could reach some decision on this (however that works), better defining on what distributions should rely on.
<superherointj>
*on what single source of truth distributions should rely on.
<superherointj>
Btw, thanks for clarifying the situation.
<superherointj>
I will open an issue on this.
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<octachron>
superherointj, the github's release archives go back to Caml Special Light 1.06. Surely, you don't release older than that?
<superherointj>
octachron, I have looked wrong then. Sorry.
<octachron>
The current decision is clearly github.
<companion_cube>
opam needs a mechanism to cache all the archives in a reliable places
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<companion_cube>
github isn't especially reliable, archives can have their checksums change, etc.
<superherointj>
Thanks. That is what I wanted to know. I'm considering migrating NixOS package to download from github.
<Armael>
companion_cube: that's not true for releases, is it?
<companion_cube>
it can be
<companion_cube>
if you rename your repo for example
<companion_cube>
(it does a forward, but the checksums change)
<companion_cube>
(ask me how I know…)
<superherointj>
octachron, should I open the issue or not to better define where it should be downloaded from?
<dstolfa>
github's also a proprietary platform that has previously been forced to ban entire countries from participating in projects, so maybe it isn't the best idea
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<octachron>
superherointj, if you only wish to know what should be the default download, it is not necessary : github + caml.inria.fr as fallback if possible (for people that might be banned from github) is the current pragmatic choice.
<superherointj>
Right.
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<superherointj>
I'll open the issue to document this so I can reference it on upstream issue. It might be relevant to others too.
<superherointj>
The pragmatic solution you offered is fine.
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<neiluj>
I've got the following problem: given some record R, I apply a function which returns an Lwt.result out of it, that is then passed to an other function with a bind.
<neiluj>
But I'd like to pass the record R to the next function too.
<neiluj>
Is there a monadic operator that kind of does that ?
<octachron>
It sounds simpler to name the intermediary record and use `f r >>= g r`
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<neiluj>
Thanks, how to name the record? Here is the relevant bit of code: https://tpaste.us/jn7e
<neiluj>
the record is conn here
<neiluj>
huh it seems that conn is still in scope? After the >>=? bind I mean.
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<octachron>
Yes, conn is in scope in the whole lambda.
<neiluj>
great, thanks!
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<superherointj>
octachron, by release I meant a GitHub release and not having a branch for a certain version. What did you mean? In GitHub interfaces I can only find latest releases.