Get list of active dependencies and their versions during "cargo build"

Asked Jan 12 '17 at 16:37

Active Jan 15 '17 at 16:31

Viewed 2,742 times

Some crates offer a pub const &str-version string, some do not. To have a general solution, I need a list of all dependencies and their versions as known to and used by cargo build during compilation so I can build my own const &str of This is my own version and all the versions I was compiled with-Debug output.

Is it possible to get a list of all dependencies and their version in build.rs ?

Cargo.lock seems to be a good source. Is it actually sound to parse Cargo.lock in build.rs? Is it guaranteed to have been updated to what Cargo actually uses and written to disk?

edited Jan 15 '17 at 16:31

Shepmaster

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asked Jan 12 '17 at 16:37

user2722968

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Maybe `cargo outdated` might be usefull? – phimuemue Jan 12 '17 at 16:41
The cargo lock file has all this information but I'm not sure at which point in the build process it is generated. – squiguy Jan 12 '17 at 19:31
`Cargo.lock` would be a good source but is it actually sound to parse `Cargo.lock` in `build.rs`? Is it guaranteed to be up to date and written to disk before `build.rs` is run? – user2722968 Jan 12 '17 at 20:34
That's something I'm unsure of and wouldn't really want to rely on :) – squiguy Jan 12 '17 at 20:39

Get list of active dependencies and their versions during "cargo build"

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