On Mon, 1 Jul 2019 11:11:45 +0200
swedebugia <[email protected]> wrote:

> I'm doing the crate-adventure and stumbled on this:
> 
> starting phase `build'
> error: failed to select a version for the requirement `clippy = "^0.0.41"`
>    candidate versions found which didn't match: 0.0.302
>    location searched: directory source 
> `/tmp/guix-build-rust-blake2-rfc-0.2.18.drv-0/blake2-rfc-0.2.18/guix-vendor` 
> (which is replacing registry `https://github.com/rust-lang/crates.io-index`)
> required by package `blake2-rfc v0.2.18 
> (/tmp/guix-build-rust-blake2-rfc-0.2.18.drv-0/blake2-rfc-0.2.18)`
> 
> But the version we got is way above .41.
> 0.0.302 > 0.0.41!

https://doc.rust-lang.org/cargo/reference/specifying-dependencies.html says:

> The version 0.0.x is not considered compatible with any other version.

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