[OpenIndiana-discuss] Creative Suite + Office Suite + CAD on OpenIndiana

[gea at napp-it.org]

*More and more newer applications are made with Rust (RustFS, Artcraft), 
so the question is:
how good is Rust support in Illumos or Solaris?:*

Claude: "/Both are officially supported, but illumos is better supported 
than Solaris. /

  * *illumos* (|x86_64-unknown-illumos|), *Solaris x86*
    (|x86_64-pc-solaris|, Solaris 11.4) and *Solaris SPARC*
    (|sparcv9-sun-solaris|, Solaris 11.4) are all listed under “Tier 2
    with Host Tools”.
  * That means |rustc| and |cargo| are meant to run natively on all
    three, so each can serve as a development platform and not only as a
    cross-compilation target.
  * Tier 2 means the targets are guaranteed to build. Automated tests
    are not always run, so a working build is not guaranteed./"

    /

For ArtCraft/WordCraft on illumos, most of the dependency tree works 
without changes.
The problems are concentrated in the GUI and graphics stack. This comes 
from the build on .199. (Wordcraft)

*Size and sources*

  * The build has 679 crates. Most come from crates.io, the project’s
    own crates (|craft-ui|, |craft-pdf|, |craft-print|, |craft-i18n|,
    |krilla|) come from the storytold/craft-libs Git repository.
  * |winprint| and |craft-winprint-gdi| are Windows printing crates.
    They are not used on illumos.
  * The base layers support illumos upstream: |libc| has illumos code in
    12 source files, and |rustix| in 62. The C-backed |aws-lc-sys| also
    compiled here.

*Crates that needed a local illumos patch (6 of 679)*

Crate 	Problem 	Fix
|wayland-backend| 	does not compile on illumos 	patched copy
|rfd| 	no file dialog backend for illumos 	illumos added to the existing 
Linux/BSD |cfg| lists
|winit| 	|is_main_thread| only handles other OSes 	illumos and Solaris 
added
|wgpu| + |wgpu-core| + |wgpu-core-deps-windows-linux-android| 	OpenGL 
backend only enabled for Windows/Linux/Android/BSD 	illumos added in 
|build.rs| and |Cargo.toml|
|wgpu-core| 	indirect validation kills the device on software OpenGL 
falls back to “off”

None of the upstream versions (|rfd| 0.17.2, |winit| 0.30.13, |wgpu-hal| 
30.0.1, |wgpu-core| 30.0.1) mention illumos or Solaris in their sources. 
Each patch adds illumos to an existing Linux/BSD code path. |arboard| 
(clipboard) also has no illumos code but compiled without a patch, 
probably through its generic Unix path.

*What this means in practice*

  * *Fragile:* The patches are tied to the exact versions in
    |Cargo.lock|. After a crate update (for example a newer |wgpu|), the
    build script copies the new sources and re-applies them. The |sed|
    anchors can break, and then you get a clear “patch did not apply”
    warning instead of a silent failure.
  * *Upstreaming:* The |rfd|, |winit| and |wgpu| changes are small and
    would be reasonable pull requests. |wgpu| has already dropped some
    illumos-specific code before, so it’s worth asking them first.
  * *Not tested:* I did not run anything beyond the smoke test on
    software OpenGL. Printing, the file dialogs and the other features
    that depend on these crates are untested here.


So the best solution would be:
add Git Issue reports/ feature requests to the critical Crates and hope 
for better Illumos support especially around the Artcraft project - best 
from members of the Illumos/OpenIniana project

Gea


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