sys.platform of wasm32-wasi build to wasi instead of unknown #4539
Description
actual:
$ cargo build --release --target wasm32-wasi --no-default-features --features stdlib,encodings,threading,freeze-stdlib
$ wasmer run --env RUST_BACKTRACE=full --dir . target/wasm32-wasi/release/rustpython.wasm -- -c 'import sys; print(sys.platform)'
unknown
expected:
wasi