The `os_info` dependency takes a long time to compile

[Danil42Russia]

Problem

I started investigating where my project's build time was being spent. Currently, building 376 units takes 36 seconds, with the longest unit being objc2-foundation:

objc2-foundation itself is a dependency of os_info, which is used in this library.

I created a project with human-panic and took the code from the example, and here we also see that 90% of the build time is spent on objc2-foundation:

Possible solutions

Replace the os_info library with std::env::consts::OS from Rust itself.

[epage]

Can you try patching in the branch for #190 to see if switching deps improved the build times?

[i582]

Hey, @epage, that's amazing, this patch reduces compilation time from 46.6s to 39.0s (~16%), 376 compilation units to 366

Before:

After: