Re: A better way to access records.

[Ludovic Courtès]

Hi,

Brendan Tildesley <mail@brendan.scot> skribis:

> In the guix codebase, on many occasions there appear things like this:
>
> (match-lambda
>     (($ <agetty-configuration> agetty tty term baud-rate auto-login
>         login-program login-pause? eight-bits? no-reset? remote?
> flow-control?
>         host no-issue? init-string no-clear? local-line extract-baud?
>         skip-login? no-newline? login-options chroot hangup?
> keep-baud? timeout
>         detect-case? wait-cr? no-hints? no-hostname? long-hostname?
>         erase-characters kill-characters chdir delay nice extra-options)
>      (list
>       ....

This has officially been Bad Practice for a while.  Instead, the
recommended approach is to use ‘match-record’ from (guix records).
There are examples of that primarily in (gnu services …).

Does that help?

Thanks,
Ludo’.