ocaml/opam

OPAM is a source-based package manager for OCaml. It supports multiple simultaneous compiler installations, flexible package constraints, and a Git-friendly development workflow.

Sylvain Le Gall

@gildor478

Is this channel an official channel to discuss OPAM ?

Pavel Argentov

@argent-smith

Gitter search didn’t give me an alternative ;)

Sylvain Le Gall

@gildor478

I suppose the mailing list is a better way to get answer

Pavel Argentov

@argent-smith

hi ppl. is there a way to do opam install of a specific github version of, say, core_kernel?

Pavel Argentov

@argent-smith

found it (opam pin add), nevermind )

kiti_Nomad

@Kiti-Nomad

i have a trouble

I installed camlzip, but when I make opa, I always have no hints.

Matthieu Sozeau

@mattam82

Is there any resource describing how to make a single package with different build/sources depending on another package? In my example I have a Coq package which works with Coq 8.8 or 8.9 with different sources for the two versions.

Maybe it should just work out-of-the-box using conditionals, but I wanted to check if this was an accepted usage

Also, up-to now I was using +8.8 or +8.9 versions, but it seems the package manager should be able to handle this variability

Matthieu Sozeau

@mattam82

Given that the url field only takes a string not depending on a filter, I guess it's not possible

simplyblago

@simplyblago

(very new to ocaml, but pretty frustrated) Hey guys, I'm trying to run a simple ocaml file through docker. I'm super confused why this is seemingly so complicated. I've tried

FROM ocaml/opam2:latest

RUN opam depext -i core ssl tls cohttp-lwt cohttp-lwt-unix

COPY test_smoke.ml ./

RUN ocamlc -o test_smoke test_smoke.ml && ./test_smoke

but there is no ocamlc in the image? This was surprising to me. What' would be the equivalent of e.g.

FROM rust:latest
COPY . .
RUN cargo run

for rust

kiti_Nomad

@Kiti-Nomad

I want to ask you a question, are JIT and AOT the characteristics of the VM language? I never encountered such a concept when I was learning C ++ and D

kiti_Nomad

@Kiti-Nomad

Someone told me that the jvm language takes AOT when compiled into bytecode, and JIT when run in a virtual machine. Languages like cpp directly generate executables, so it takes AOT
is it right！

Although this has nothing to do with the subject you discussed, I know you are all professionals

ret394

@ret394

OCaml for Windows

intended to be used from within cygwin

remove cygwin dep.

ret394

@ret394

msys2 could help here.

really sorry. native(no msys2 req) would be better than msys2.

ret394

@ret394

I still can't build this. Sorry

Kenneth Adam Miller

@KennethAdamMiller

Suppose I am migrating to a new version of ocaml, and I would like all my existing pinned packages to be repinned in the net switch. Is there something I could use that would quickly give me that?

kiti_Nomad

@Kiti-Nomad

I think maybe it is a very smart choice to give up the windows platform.

Kenneth Adam Miller

@KennethAdamMiller

Is it possible to publish to a site other than github?

Like, say I have my own git server, gitlab or whatever, with a fork of opam-repository. I want to publish to that.

(With opam publish I mean)

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remove cygwin dep.

really sorry. native(no msys2 req) would be better than msys2.