WASM support in iguana

[aaannz]

There is some development about adding podman (in this case using crun) to run WASM instead of containers. This can be interesting to iguana as WASM containers are generally smaller and even though they are AFAIK severely limited in what they can do, they may be very useful.

Resources:
https://wasmedge.org/book/en/use_cases/kubernetes/demo/wasi.html

[aaannz]

crun situation

Building crun with wasm support in OBS is challenging because wasmedge, used by crun as wasm runtime, depends on lld static library which is not shipped with llvm. Shipping static libraries is not by default accepted and needs an approval and special packaging (see https://en.opensuse.org/openSUSE:Packaging_guidelines#Static_Libraries).

There were attempts to build shared library for lld, but apparently that is explicit non-goal of lld (see https://reviews.llvm.org/D85278#2434383).