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gnupdate: Add `--dry-run' option.

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* maintainers/scripts/gnu/gnupdate.scm (%options): Add `dry-run'.
  (main): Handle `--dry-run'.

svn path=/nixpkgs/trunk/; revision=21716
This commit is contained in:
Ludovic Courtès 2010-05-10 21:26:53 +00:00
parent 5dd1036a04
commit 5583d516d2
1 changed files with 13 additions and 4 deletions
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17
maintainers/scripts/gnu/gnupdate.scm
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@ -658,9 +658,13 @@
(format #t "~%")
(format #t " -x, --xml=FILE Read XML output of `nix-instantiate'~%")
(format #t " from FILE.~%")
(format #t " -d, --dry-run Don't actually update Nix expressions~%")
(format #t " -h, --help Give this help list.~%~%")
(format #t "Report bugs to <ludo@gnu.org>~%")
(exit 0)))
(option '(#\d "dry-run") #f #f
(lambda (opt name arg result)
(alist-cons 'dry-run #t result)))
(option '(#\x "xml") #t #f
(lambda (opt name arg result)
@ -695,8 +699,13 @@
old-version old-hash
new-version new-hash
location)
(update-nix-expression (location-file location)
old-version old-hash
new-version new-hash))
(if (assoc-ref opts 'dry-run)
(format #t "`~a' would be updated from ~a to ~a (~a -> ~a)~%"
name old-version new-version
old-hash new-hash)
(update-nix-expression (location-file location)
old-version old-hash
new-version new-hash)))
(_ #f)))
updates)))
updates)
#t))