substitute: Parse '_NIX_OPTIONS' once.

* guix/scripts/substitute.scm (find-daemon-option): Arrange to call
'daemon-options' only once.
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Ludovic Courtès 2023-01-09 10:27:54 +01:00
parent 47c1de22df
commit 007e697560
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@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013-2022 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2013-2023 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2014 Nikita Karetnikov <nikita@karetnikov.org>
;;; Copyright © 2018 Kyle Meyer <kyle@kyleam.com>
;;; Copyright © 2020 Christopher Baines <mail@cbaines.net>
@ -706,10 +706,12 @@ (define %not-newline
(string-drop option=value (+ 1 equal-sign))))))
(string-tokenize newline-separated %not-newline)))))
(define (find-daemon-option option)
"Return the value of build daemon option OPTION, or #f if it could not be
(define find-daemon-option
(let ((options (delay (daemon-options))))
(lambda (option)
"Return the value of build daemon option OPTION, or #f if it could not be
found."
(assoc-ref (daemon-options) option))
(assoc-ref (force options) option))))
(define %default-substitute-urls
(match (and=> (or (find-daemon-option "untrusted-substitute-urls") ;client