<d_bot>
<Président daren le pétrolier> is there any way to dynamically load a module compiled in bytecode with `Dynlink` and include it in a sub-module and not in the global space ?
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<d_bot>
<VPhantom> Hi! I'm not sure which channel this would be best in, so I'm here. I used to use switch `4.11.1+musl+flambda` and I'm trying to upgrade to the latest, 4.13.1, and I notice that those options are no longer available since 4.12.0. The closest I got to installing the equivalent is similar to the release notes for opam 2.1, although not exactly. Below is without flambda to reduce variables.
<d_bot>
<VPhantom> This fails however, despite my having installed `musl`, `musl-dev` and `musl-tools` as was necessary for using `4.11.1+musl`:
<d_bot>
<VPhantom> ```text
<d_bot>
<VPhantom> ### output ###
<d_bot>
<VPhantom> # [...]
<d_bot>
<VPhantom> # /usr/bin/ld: domain.bpic.o: relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a shared object; recompile with -fPIC
<d_bot>
<VPhantom> ...
<d_bot>
<VPhantom> # Makefile:295: recipe for target 'libcamlrun_shared.so' failed
<d_bot>
<VPhantom> ```
<d_bot>
<VPhantom> In the <4.12 releases musl "just worked" so I'm not sure how to resolve this. Has anyone used `ocaml-option-musl` since 4.12 successfully? Also, should I open a bug report about the extra `-` in the release notes?
<reynir>
@VPhantom this channel is probably fine, but please note that it's bridged to IRC, and code blocks tend to be rather noisy on the irc end. We see the source markdown with each line as a separate message.
<d_bot>
<VPhantom> Ouch, sorry about that!
<reynir>
No worries :)
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<d_bot>
<octachron> Hm, `opam switch create 4.13.1+musl ocaml-variants.4.13.1+options ocaml-option-musl` works for me on Unbuntu 21.10.
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<d_bot>
<VPhantom> And you have musl musl-dev musl-tools installed?
<d_bot>
<octachron> Yes (version 1.2.2-1)
<d_bot>
<VPhantom> Hm, apparently the host I'm trying this on is on Debian Stretch. Maybe its GCC is too old.
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<d_bot>
<VPhantom> Nope, exact same error on Debian Buster. 🤔
<d_bot>
<VPhantom> Argh wrong terminal window, that was Stretch again. Compiling on my Buster host now…
<d_bot>
<VPhantom> Ah ha! It's successful on Debian Buster so yeah, GCC 8.3.0 is fine but 6.3.0 must be too old for this. Given that Stretch is in Long Term Support and will retire in a few months (June 2022), I probably shouldn't investigate that further.
<d_bot>
<VPhantom>
<d_bot>
<VPhantom> Should I notify someone over at OCaml about that incorrect '-' in the 4.13.x release notes though?
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<d_bot>
<octachron> Well, I am already notified. You could also send a PR to ocaml.org, or wait for me to find the time to send the fix.
<d_bot>
<VPhantom> I see that big pencil on the upper right corner so I'll give it a shot. 😉
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<d_bot>
<octachron> @VPhantom thanks a lot for the PR!
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<d_bot>
<nath> Hello every one can somebody help me about an exercice in camel ? I have to draw a cross with matrice and I don’t understand how 😕
<d_bot>
<octachron> What is the context? "Drawing with matrice" is quite unclear. Do you mean that you have a function that draws a matrix (aka a two-dimensional array) and you don't know how to create a matrix representing a cross?
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<d_bot>
<monk> what is the general approach to pretty printing? is it all ppx?
<d_bot>
<monk> one of those things i wish ocaml was a bit less difficult about up front
<companion_cube>
personally it's manual printers, although recently I've been using ppx_deriving.show more and more
<d_bot>
<monk> ppx_deriving is tempting because that's basically what rust gives you for free, haha
<d_bot>
<monk> "free"
<companion_cube>
yeah…
<companion_cube>
I wish it shipped with the compiler
<d_bot>
<monk> if it were possible to provide a simpler API to `Format` for naive pretty printers, that would work to
<d_bot>
<monk> i can understand why pretty printing is complicated
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<d_bot>
<monk> but if it were possible to find a reduced surface for just basic things and make that its own function/sub-module, that would be an improvement imo
<d_bot>
<monk> was overwhelming seeing all the `@` formatting codes and the various sub-arguments you can provide to each, the notion of cutting, open/closing a box, etc
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<d_bot>
<monk> then again, maybe that's why `ppx_deriving.show` became a thing to start with...
<companion_cube>
you cn use the `fmt` library
<companion_cube>
or CCFormat :p
<d_bot>
<monk> haha
<companion_cube>
but yeah, it's good to know about boxes
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<d_bot>
<mimoo> is there a nicer looking alternative to odoc for html docs?
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<d_bot>
<octachron> odoc with customized css?
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<d_bot>
<monk> cs3110 text touches on pretty printing a bit in §5.4.3 but it closes on a weak note by stating:
<d_bot>
<monk> > For more information, see the toplevel manual (search for #install_printer), the Format module, and this OCaml Github issue. The latter seems to be the only place that documents the use of extra arguments, as in pp_val above, to print values of polymorphic types.
<companion_cube>
meanwhile seems like my syntax highlighting on the blog is fucked
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<d_bot>
<monk> just looks like the syntax theme is too light, yeah?
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<d_bot>
<andreypopp> I’ve found pprint to be much more approachable. For debug purposes (dumping internals) I’m using ppx_sexp_conv
<d_bot>
<andreypopp> pprint over fmt, I meant
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<reynir>
self blag
<companion_cube>
but pprint seems super verbose
<companion_cube>
fixed the theme, ugh
<companion_cube>
I thought Zola would be stable, but no, they also break shit for no reason
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<d_bot>
<monk> haha, as someone maintaining a somewhat popular zola theme i am very thankful to the PR's that have kept it functioning with each new version
<d_bot>
<monk> the breaking changes haven't been too bad but they do exist and boy do i not care to keep up on it lol
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<d_bot>
<Alistair> Is there an OCaml library that provides a vector (dynamic array)?
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<d_bot>
<andreypopp> CCVector, vec, pvec
<d_bot>
<Bluddy> (but it should really be in the standard library)
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<companion_cube>
@monk which theme?
<companion_cube>
Yeah +1 @bluddy
<companion_cube>
I had to move the syntax highlighting stuff to a new "markdown" section...