bug#36457: Guix does not match point-versions correctly

[swedebugia]

On 2019-07-01 11:11, swedebugia wrote:
> Hi
>
> 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!
>
> WDYT?

Oops maybe this output is from cargo.

According to https://semver.npmjs.com/ the ^ (hat) means: include 
everything greater than a particular version in the same major range. 
cargo should thus accept up to 0.0.999 in this case as valid but does not.

Should I relax the version requirement? To what?

--
Cheers Swedebugia