Support for 2018 edition? about ructe HOT 3 CLOSED

Thank you!

I havn't really looked at the 2018 edition concept yet, but yes, ideally ructe should recognize if the project it is a build dependency of has enabled the 2018 edition, and if so generate the new-style use lines. I don't know if that is possible.

If it can't be done "automagically", it could be either a parameter set in the build script or a feature defined on the dependency. I guess a future would be the best way then?

I'll look into it.

from ructe.

I have asked for an environment variable to use at https://users.rust-lang.org/t/detect-edition-2018-from-cargo-build-rs/21134 .

Failing that, I now think it would be better to actually look for an edition setting in $CARGO_MANIFEST_DIR/Cargo.toml than to require a feature flag or a call parameter in build.rs itself.

from ructe.

It seems that it is possible to formulate the use lines in such a way that they are compatible with both edition 2015 and edition 2018, so my current hope is that detecting edition 2018 should not be necessary. There are still some details that fails, but I hope to get back to it in a few hours.

from ructe.