[Rust] Recent version of arrow crate does not compile into wasm target

[asfimport]

arrow 0.16 compiles successfully into wasm32-unknown-unknown, but recent git version does not. it would be nice to fix that.

compiler errors:

 

error[E0433]: failed to resolve: could not find `unix` in `os`
    --> /home/regl/.cargo/registry/src/github.com-1ecc6299db9ec823/dirs-1.0.5/src/lin.rs:41:18
     |
  41 |     use std::os::unix::ffi::OsStringExt;
     |                  ^^^^ could not find `unix` in `os`
  
  error[E0432]: unresolved import `unix`
   --> /home/regl/.cargo/registry/src/github.com-1ecc6299db9ec823/dirs-1.0.5/src/lin.rs:6:5
    |
  6 | use unix;
    |     ^^^^ no `unix` in the root

the problem is that prettytable-rs dependency depends on term->dirs which causes this error

consider making  prettytable-rs as dev dependency

 

Reporter: Sergey Todyshev
Assignee: Neville Dipale / @nevi-me

Related issues:

• [Rust] Make array_value_to_string available in all Arrow builds (is related to)

PRs and other links:

• GitHub Pull Request #7400

_{Note: This issue was originally created as ARROW-9088. Please see the migration documentation for further details.}

[asfimport]

Neville Dipale / @nevi-me:
I've made prettytable-rs optional, so once the PR is merged, you should be able to turn it off. I forgot that we removed libc at some point, so it didn't dawn on me that we can now compile arrow to wasm.

[asfimport]

Neville Dipale / @nevi-me:
Issue resolved by pull request 7400
#7400