Leo Famulari <leo@famulari.name> writes:

> On Sun, Dec 13, 2020 at 12:02:50PM -0800, John Soo wrote:
>> Is there any chance this could make it to staging before the merge?
>>  
>> http://issues.guix.gnu.org/42295
>
> Can you clarify what it does (I'm not that familiar with Rust).
>
> Is it likely that things will "just work", or will we need to do a lot
> of clean-up work? The staging branch is for "non-disruptive" changes
> that cause between 300 and 1800 packages to be rebuilt.
>
> I counted 1175 instances of 'rust-build-system' in the packages, so if
> it rebuilds every Rust package, it's within the limits for staging. I'm
> not sure how many non-Rust packages depend on Rust transitively — ffmpeg
> is one.

It's a bit difficult to find, but following through from this Patchwork
series [1], you can find this list of affected packages
[2]. Unfortunately that page doesn't give a count, but clicking through
to the JSON representation of the data, gives an array with 1663
elements in it, so I think there are 1663 packages where the derivation
would change (at least for x86_64-linux).

1: https://patchwork.cbaines.net/project/guix-patches/patch/5407eb2f-b499-2520-e0e5-48ca7171e6bd@ftbfs.org/
2: https://data.guix-patches.cbaines.net/compare/package-derivations?base_commit=1485736b94706a29db3d3b3d7ff9f9e69bfaef67&target_commit=178c879ef04bfa876606ab1f849430b12b291b35&system=x86_64-linux&target=none&build_change=&after_name=&limit_results=&all_results=on