On 17/11/2018 23:53, Grant Taylor wrote:
> On 11/17/2018 07:58 PM, Adam Carter wrote:
> 
> These are the packages that would be merged, in order:
> 
> Calculating dependencies... done!
> [ebuild  N     ] dev-util/cargo-0.30.0  USE="-debug -doc -libressl"
> ABI_X86="(64) -32 (-x32)"
> [ebuild  N     ] virtual/cargo-1.29.1
> [blocks B      ] dev-util/cargo ("dev-util/cargo" is blocking
> dev-lang/rust-1.30.1-r1)
> 
>  * Error: The above package list contains packages which cannot be
>  * installed at the same time on the same system.
> 
>   (dev-util/cargo-0.30.0:0/0::gentoo, ebuild scheduled for merge) pulled
> in by
>     =dev-util/cargo-0.30.0* required by
> (virtual/cargo-1.29.1:0/0::gentoo, ebuild scheduled for merge)
> 
>   (dev-lang/rust-1.30.1-r1:stable/1.30::gentoo, installed) pulled in by
>     =dev-lang/rust-1.30.1* required by (virtual/rust-1.30.1:0/0::gentoo,
> installed)

It looks like you need to unmask virtual/cargo because you need to have
virtual/cargo 1.30.1. These version numbers have to match. Are you
running a mixed keyworded system?

Once you unmask, you can install what you need for Firefox/Thunderbird
beforehand:

emerge -1 virtual/cargo dev-lang/rust

--
Andrew Udvare