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gnu-maintenance: Avoid network access in 'gnu-package?'.

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* guix/gnu-maintenance.scm (gnu-package?): Add 'mirror-type' procedure.
  Resort to 'official-gnu-packages' only when 'mirror-type' returns #f.
This commit is contained in:
Ludovic Courtès 2014-04-29 18:02:16 +02:00
parent 0423b7847b
commit 187eb5f643
1 changed files with 14 additions and 5 deletions
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19
guix/gnu-maintenance.scm
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@ -167,13 +167,22 @@ (define gnu-package?
(lambda (package)
"Return true if PACKAGE is a GNU package. This procedure may access the
network to check in GNU's database."
;; TODO: Find a way to determine that a package is non-GNU without going
;; through the network.
(define (mirror-type url)
(let ((uri (string->uri url)))
(and (eq? (uri-scheme uri) 'mirror)
(if (member (uri-host uri) '("gnu" "gnupg" "gcc"))
'gnu
'non-gnu))))
(let ((url (and=> (package-source package) origin-uri))
(name (package-name package)))
(or (and (string? url) (string-prefix? "mirror://gnu" url))
(and (member name (map gnu-package-name (official-gnu-packages)))
#t)))))))
(case (and url (mirror-type url))
((gnu) #t)
((non-gnu) #f)
(else
;; Last resort: resort to the network.
(and (member name (map gnu-package-name (official-gnu-packages)))
#t))))))))
;;;