"cargo install" doesn't read the "rustflags" setting in .cargo/config

[xelephas]

Problem

Cargo install command doesn't read the rustflags setting in .cargo/config

Steps

In order to fix a linker issue on macOS (https://github.com/alexcrichton/git2-rs/issues/180), i have to use something like: RUSTFLAGS='-L /usr/lib' cargo build.

And I put this flag inside {project-folder}/.cargo/config file:

[build]
rustflags = ["-L", "/usr/lib"]

This works for cargo build, but not cargo install

It looks like cargo install ignores that setting.
I have to use RUSTFLAGS='-L /usr/lib' cargo install --path . to make it work again.

i also tried something like:

[targer.x86_64-apple-darwin]
rustflags = ["-L", "/usr/lib"]

No luck either.

Notes

Output of cargo version:

$ cargo version
cargo 1.31.0 (339d9f9c8 2018-11-16)

Operating System: macOS High Sierra, 10.13.6

I have edition = "2018" in Cargo.toml

[Eh2406]

This was changed in #6026. This was changed because we had a lot of reports of cargo install thing-from-crates.io cross compiling because the cwd happend to be in a embedded project.

cc @alexcrichton fall out from your PR.

[dwijnand]

As suggested in #6026 (comment) cargo install --path . should read .cargo/config in my, and Mark's, opinion.

[xelephas]

Thanks for the pointer @Eh2406 .

Yes, I agree with @dwijnand and @Mark-Simulacrum , that there should be a way to provide "local configuration"

Just created a feature request (#6498) to keep it tracked.

[dwijnand]

Nice work. Thank you, @xaon. Are you happy to close this ticket in favour of that tracking issue?

[xelephas]

Yes @dwijnand , closing this one.