Lancern's Treasure Chest

https://github.com/rust-lang/cargo/issues/1982

给一个 crate 底下的 library, executable, example, test 目标分别在 Cargo.toml 里面指定 dependency 这件事，rust 社区便秘一般地搞了六年，而且还没搞完

隔壁 C++ 委员会那帮老头搞一个新 feature 都没这么便秘的

GitHub

Allow dependencies that only apply to specific cargo targets (bin, example, etc.) · Issue #1982 · rust-lang/cargo

Use case: I have a library that also produces an executable. The executable needs env_logger in order to be able to log, the library shouldn't carry that dependency though, as it pulls in all s...