GNU bug report logs - #34948
[PATCH 0/3] Turn 'essential-services' into an <operating-system> field

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Package: guix-patches;

Reported by: Ludovic Courtès <ludo <at> gnu.org>

Date: Fri, 22 Mar 2019 17:22:02 UTC

Severity: normal

Tags: patch

Done: Ludovic Courtès <ludo <at> gnu.org>

Bug is archived. No further changes may be made.

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From: Ludovic Courtès <ludo <at> gnu.org>
To: Ricardo Wurmus <rekado <at> elephly.net>
Cc: 34948 <at> debbugs.gnu.org
Subject: [bug#34948] [PATCH 1/3] records: Allow thunked fields to refer to 'this-record'.
Date: Sat, 23 Mar 2019 17:05:10 +0100

I should mention that there are other craaaazzy applications of this!

For example, the ‘self-native-input?’ field of <package> becomes
useless, because now you can write:

  (package
    ;; …
    (native-inputs
      ;; Add self as a native input when cross-compiling.
      `(,@(if (%current-target-system)
              `(("this" ,this-record))
              '())
        ;; …
        )))

I think there are other cases in package definitions where this can be
useful, possibly things like the ‘make-lua-*’ procedures that we have.

Ludo’.
This bug report was last modified 6 years and 53 days ago.

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