bug#74217: Bootstrapping Zig with no Binary Blobs

[Ekaitz Zarraga]

Hi,

In order to include modern versions of Zig (Zig 0.12+) in Guix, we need 
to remove the binary blobs.

I open this issue to track this effort and store information about the 
process.

Some Guix user is trying to achieve the same goal:

https://git.jakstys.lt/motiejus/zig-repro

And discussing about it here:

https://ziggit.dev/t/building-self-hosted-from-the-original-c-implementation/6607/11

We could use that effort as a reference and package it to Guix.