Upgrade to the wasmer rewrite about wasmex

[syrusakbary]

The PR https://github.com/wasmerio/wasmer-reborn/pull/135 finally landed in master today 🎉

Hope this unblocks the issue!

[tessi]

Update: Did some more work - tests are green now. If wasmer-reborn is released, we should be ready to go 🎉

❯ mix test
Compiling NIF crate :wasmex (native/wasmex)...
    Finished dev [unoptimized + debuginfo] target(s) in 0.07s
    Finished dev [unoptimized + debuginfo] target(s) in 0.00s
    Finished dev [unoptimized + debuginfo] target(s) in 0.00s
...............................................

Finished in 5.0 seconds
47 tests, 0 failures

Randomized with seed 959522

[tessi]

In the meantime the people at wasmerio progressed on their rewrite: Memory is now Send+Sync 🎉 It makes one compilation error less.

Can't wait for https://github.com/wasmerio/wasmer-reborn/pull/135 to land - it is work to make more structures Send+Sync. We depend on it as rustler needs everything to be Send+Sync. When this lands, we are close to be functioning with the rewrite.

[tessi]

Thanks @syrusakbary for the heads up. I hope to get some dev time soon when my daughter is asleep and I manage to stay awake :)

[tessi]

Update: It is compiling now and running mostly fine - the WIP code is pushed to the linked PR. What is still missing is access to memory from wrapped functions. The wasmer team has a neat trick to achieve this using function environments in their WASI implementation - given some time, I will copy and adapt their solution and see if it works for us.

[tessi]

I am about to release v0.3.0 which includes support for wasmer 1.0 🎉