Error running qjs build on python or ruby wasm ext

[Munawwar]

So it is possible to compile qjuicks to wasm module. However when trying use it with python for example:

from wasmer import Instance

wasm_bytes = open('./build/qjs.wasm', 'rb').read()
instance = Instance(wasm_bytes)
print('#########')
print(instance.exports)

I get the following error:

> python3 test.py
Traceback (most recent call last):
  File "test.py", line 4, in <module>
    instance = Instance(wasm_bytes)
RuntimeError: Failed to instantiate the module:
    19 link errors: (1 of 19) Import not found, namespace: wasi_unstable, name: fd_prestat_get (2 of 19) Import not found, namespace: wasi_unstable, name: fd_prestat_dir_name (3 of 19) Import not found, namespace: wasi_unstable, name: environ_sizes_get (4 of 19) Import not found, namespace: wasi_unstable, name: environ_get (5 of 19) Import not found, namespace: wasi_unstable, name: args_sizes_get (6 of 19) Import not found, namespace: wasi_unstable, name: args_get (7 of 19) Import not found, namespace: wasi_unstable, name: fd_read (8 of 19) Import not found, namespace: wasi_unstable, name: fd_seek (9 of 19) Import not found, namespace: wasi_unstable, name: fd_write (10 of 19) Import not found, namespace: wasi_unstable, name: fd_close (11 of 19) Import not found, namespace: wasi_unstable, name: clock_time_get (12 of 19) Import not found, namespace: wasi_unstable, name: poll_oneoff (13 of 19) Import not found, namespace: wasi_unstable, name: proc_exit (14 of 19) Import not found, namespace: wasi_unstable, name: fd_fdstat_get (15 of 19) Import not found, namespace: wasi_unstable, name: path_open (16 of 19) Import not found, namespace: wasi_unstable, name: path_rename (17 of 19) Import not found, namespace: wasi_unstable, name: path_unlink_file (18 of 19) Import not found, namespace: wasi_unstable, name: path_remove_directory (19 of 19) Import not found, namespace: wasi_unstable, name: fd_fdstat_set_flags

How to go about this?

[Munawwar]

@syrusakbary ^ do you think it's a wasmer issue rather than quickjs issue?

[saghul]

Did you use the latest version of wasmer? Does it run the hello world example on wasmer? The REPL won't work yet because poll_oneoff is not yet implemented IIRC, but I don't know about the other 18 failues 😨

[Munawwar]

Latest wasmer 0.6.0, wasmer python library 0.3.0 (or ruby wasmer 0.2.0). quickjs runs succcesfully through wasmer-cli. But the python or ruby libraries cant initialize qjs.wasm. Maybe it's a issue with wasmer python/ruby libraries?

[saghul]

Maybe it's a issue with wasmer python/ruby libraries?

It's my only guess.

[syrusakbary]

@Munawwar to run WASI in Wasmer embedded you need the WASI imports as well in Python/Ruby. We are woking on making them available. Will post updates as we continue the work there :)

@syrusakbary ^ do you think it's a wasmer issue rather than quickjs issue?

Yeah, it's a Wasmer issue/feature (not an issue in quickjs) :)