fix: support WASM/webR builds

[eitsupi]

No description provided.

[eitsupi]

Builds successfully, but savvy-cli update does not work. (yutannihilation/savvy#333)

[eitsupi]

It works now.

> install.packages("rlang")
Downloading webR package: rlang
> install.packages("neopolars", repos = "https://eitsupi.r-universe.dev")
Downloading webR package: neopolars
> library(neopolars)
> as_polars_df(mtcars)$select("cyl", "am")
shape: (32, 2)
┌─────┬─────┐
│ cyl ┆ am  │
│ --- ┆ --- │
│ f64 ┆ f64 │
╞═════╪═════╡
│ 6.0 ┆ 1.0 │
│ 6.0 ┆ 1.0 │
│ 4.0 ┆ 1.0 │
│ 6.0 ┆ 0.0 │
│ 8.0 ┆ 0.0 │
│ …   ┆ …   │
│ 4.0 ┆ 1.0 │
│ 8.0 ┆ 1.0 │
│ 6.0 ┆ 1.0 │
│ 8.0 ┆ 1.0 │
│ 4.0 ┆ 1.0 │
└─────┴─────┘

[yutannihilation]

I'm suspecting the cc crate, which was updated within a day. I'm seeing a similar error.

https://github.com/rust-lang/cc-rs/releases/tag/cc-v1.2.8

[eitsupi]

Thank you for your comment.
Based on the comparison of the latest few commits, it looks like something pulled in by the cargo update in a4c2e28 is the cause, so your guess seems to be correct.