FTB because of NaCerl

[JiffB]

Hi,
chumak compilation fails to build because NaCerl is outdated (want : erl_interface that doesn't exist anymore) :

$ rebar3 compile
===> Verifying dependencies...
make: Entering directory '/usr/local/lib/erlang/lib/chumak/_build/default/lib/nacerl/c_src'
UNAME_SYS is GNU/Linux
C_SRC_OUTPUT is /usr/local/lib/erlang/lib/chumak/_build/default/lib/nacerl/c_src/../priv/nacerl_nif.so
cc -fPIC -I "/usr/lib/erlang/erts-13.1.5/include/" -I "/usr/lib/erlang/lib/erl_interface-5.3/include"   -c -o /usr/local/lib/erlang/lib/chumak/_build/default/lib/nacerl/c_src/tweetnacl.o /usr/local/lib/erlang/lib/chumak/_build/default/lib/nacerl/c_src/tweetnacl.c
cc -fPIC -I "/usr/lib/erlang/erts-13.1.5/include/" -I "/usr/lib/erlang/lib/erl_interface-5.3/include"   -c -o /usr/local/lib/erlang/lib/chumak/_build/default/lib/nacerl/c_src/nacerl_nif.o /usr/local/lib/erlang/lib/chumak/_build/default/lib/nacerl/c_src/nacerl_nif.c
cc -fPIC -I "/usr/lib/erlang/erts-13.1.5/include/" -I "/usr/lib/erlang/lib/erl_interface-5.3/include"   -c -o /usr/local/lib/erlang/lib/chumak/_build/default/lib/nacerl/c_src/randombytes.o /usr/local/lib/erlang/lib/chumak/_build/default/lib/nacerl/c_src/randombytes.c
cc -fPIC -I "/usr/lib/erlang/erts-13.1.5/include/" -I "/usr/lib/erlang/lib/erl_interface-5.3/include"   -c -o /usr/local/lib/erlang/lib/chumak/_build/default/lib/nacerl/c_src/main.o /usr/local/lib/erlang/lib/chumak/_build/default/lib/nacerl/c_src/main.c
cc /usr/local/lib/erlang/lib/chumak/_build/default/lib/nacerl/c_src/tweetnacl.o /usr/local/lib/erlang/lib/chumak/_build/default/lib/nacerl/c_src/nacerl_nif.o /usr/local/lib/erlang/lib/chumak/_build/default/lib/nacerl/c_src/randombytes.o /usr/local/lib/erlang/lib/chumak/_build/default/lib/nacerl/c_src/main.o -shared -L "/usr/lib/erlang/lib/erl_interface-5.3/lib" -lerl_interface -lei -o /usr/local/lib/erlang/lib/chumak/_build/default/lib/nacerl/c_src/../priv/nacerl_nif.so
/usr/bin/ld: cannot find -lerl_interface: No such file or directory
collect2: error: ld returned 1 exit status
make: *** [Makefile:77: /usr/local/lib/erlang/lib/chumak/_build/default/lib/nacerl/c_src/../priv/nacerl_nif.so] Error 1
make: Leaving directory '/usr/local/lib/erlang/lib/chumak/_build/default/lib/nacerl/c_src'
===> Hook for compile failed!

NaCerl seems the best solution as it is fully integrated into chumak, avoiding nodes communication, so it would be nice to be able to use it.

So, does somebody have a patch to avoid that or another Erlang git to substitute to replace it ?

Jean-Yves

[IslandUsurper]

We've been using enacl for a good while, but it's been abandoned and no one has made a new release to address some NIF-related issues. PreVeil/enacl is a good fork, but they don't control the Hex package. I have suggested they try to take over the name (and done so myself because I'm willing to) but I haven't gotten a response from them or Hex about it.

I'm working on a new NIF-binding library that I'd like to submit as an option for CHUMAK_CURVE_LIB, but it needs some TLC before I make that PR.

[IslandUsurper]

@JiffB, I have published a release candidate of Zodium, which uses Zigler to compile the NIFs for libsodium. The mentioned PR #61 teaches Chumak about it so you can specify CHUMAK_CURVE_LIB=zodium in your project's environment. If you need more from the libsodium API than Chumak needs, let me know and I can see about adding it.

[JiffB]

On Mon, 05 Jan 2026 10:14:01 -0800 Lyle Mantooth ***@***.***> wrote: IslandUsurper left a comment (zeromq/chumak#59) @JiffB, I have published a release candidate of Zodium, which uses Zigler to compile the NIFs for libsodium. The mentioned PR #61 teaches Chumak about it so you can specify `CHUMAK_CURVE_LIB=zodium` in your project's environment. If you need more from the libsodium API than Chumak needs, let me know and I can see about adding it.

Hi, I'll see that this WE (IT reorganization + failed disks to fix before anything else :/) and keep you aware. Jean-Yves

…

--

[JiffB]

I have published a release candidate of Zodium, which uses Zigler to compile the NIFs for libsodium.

I do not use hex (too much elixir pollution), so do you have a git URL for Zodium ?

To answer your question about my crypto needs, no, I do not have any more needs that those necessary to make Chumak work correctly.

BTW, a happy new year to you and your SO, and above all, a good health.

Jean-Yves

[IslandUsurper]

Thanks. Yes it's on GitHub too: https://github.com/IslandUsurper/zodium