bug#66279: Unexporting <user-account>

[Ludovic Courtès]

Hi,

Maxim Cournoyer <maxim.cournoyer@gmail.com> skribis:

> Ludovic Courtès <ludo@gnu.org> writes:
>
>> Hi Maxim,
>>
>> Commit 03795e2ba27424fc98957da00f6c71325e7ae425 exports the
>> <user-account> record type descriptor (RTD).
>>
>> Common practice is to keep RTDs private because by publishing them, we
>> make it harder to change the ABI (because users might be matching fields
>> positionally) and we make it trivial for users to forge records of that
>> type, bypassing any checks we may have in the official constructor (such
>> as “sanitizers”).
>
> Perhaps we should document this?  More power to the users!

Done in commit 7b710836a1c7cb921f54ead64f465bcc5333d076, based on what I
wrote above.

>> What do you think of reverting this commit?  I don’t see references to
>> <user-account> outside of its module.
>
> I'd like to note there are also valid usages requiring a record type,
> such as 'match-record' from (guix records).  Otherwise, I don't feel
> strongly about it, but if if's done I think the rationale you gave above
> should be documented in our contributing guidelines.

Alright, done as well in commit
97927608cb4f9c5d721115f1cb638de17ac38e62.

Thanks,
Ludo’.