[bug#50814] [PATCH] guix: git-authenticate: Also authenticate the channel intro commit.

[Attila Lendvai]

what should happen if a channel-introduction commit does not update the 
.guix-authorizations file?

this means that this single commit will get through the authentication (channel 
intro commits are always trusted), but any later commits signed with the same 
key will be rejected.

this is the situation that got me confused, and thrust me into attempting to 
fix this (trying to `guix pull` from a local git checkout of guix containing my 
patches).

i wrote the code for this, but i don't know what should be its UI. how should 
this be reported to the user?

using `(warning ...)` will just print something to stderr.

i was hoping to raise a continuable condition of type &warning, that i can even 
check for in the tests, but i have failed to put that together. the 
scheme/guile condition system is a bit messy/convoluted.

can someone help me out with a hint/outline about how to report this that best 
fits the rest of guix?

note that it's not really an error, because until another commit is added with 
the new key, this channel is valid.

- attila
PGP: 5D5F 45C7 DFCD 0A39