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install-grub: Make more robust against GC'ed system profile entries

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Previously this barfed with:

  updating GRUB 2 menu...
  fileparse(): need a valid pathname at /nix/store/zldbbngl0f8g5iv4rslygxwp0dbg1624-install-grub.pl line 391.
  warning: error(s) occured while switching to the new configuration
This commit is contained in:
Eelco Dolstra 2015-12-30 12:53:36 +01:00
parent 468f698f60
commit 1ba2015450
1 changed files with 4 additions and 0 deletions
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4
nixos/modules/system/boot/loader/grub/install-grub.pl
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@ -387,6 +387,10 @@ sub addProfile {
my $curEntry = 0;
foreach my $link (@links) {
last if $curEntry++ >= $configurationLimit;
if (! -e "$link/nixos-version") {
warn "skipping corrupt system profile entry ‘$link’\n";
next;
}
my $date = strftime("%F", localtime(lstat($link)->mtime));
my $version =
-e "$link/nixos-version"