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nix-channel: Use binary caches advertised by channels

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Channels can now advertise a binary cache by creating a file
<channel-url>/binary-cache-url.  The channel unpacker puts these in
its "binary-caches" subdirectory.  Thus, the URLS of the binary caches
for the channels added by root appear in
/nix/var/nix/profiles/per-user/eelco/channels/binary-caches/*.  The
binary cache substituter reads these and adds them to the list of
binary caches.
This commit is contained in:
Eelco Dolstra 2012-08-01 17:56:11 -04:00
parent 79bba3782c
commit 5170c5691a
4 changed files with 49 additions and 20 deletions
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10
scripts/download-from-binary-cache.pl.in
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@ -176,6 +176,16 @@ sub getAvailableCaches {
($Nix::Config::config{"binary-caches"}
// ($Nix::Config::storeDir eq "/nix/store" ? "http://nixos.org/binary-cache" : ""));
my $urlsFiles = $Nix::Config::config{"binary-cache-files"}
// "/nix/var/nix/profiles/per-user/root/channels/binary-caches/*";
foreach my $urlFile (glob $urlsFiles) {
next unless -f $urlFile;
open FILE, "<$urlFile" or die "cannot open ‘$urlFile’\n";
my $url = <FILE>; chomp $url;
close FILE;
push @urls, strToList($url);
}
# Allow Nix daemon users to override the binary caches to a subset
# of those listed in the config file. Note that ‘untrusted-*’
# denotes options passed by the client.