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* When doing a nix-pull, remove old manifests downloaded from the same

Browse source 
URL.  This prevents lots of old cruft accumulating in
  /nix/var/nix/manifests.
This commit is contained in:
Eelco Dolstra 2009-12-09 19:36:54 +00:00
parent c4c84d1edb
commit 7ca9972636
2 changed files with 23 additions and 8 deletions
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5
scripts/nix-channel.in
View file

@ -88,11 +88,6 @@ sub update {
# source.
if (-W "$stateDir/manifests") {
# Remove all the old manifests.
for my $manifest (glob "$stateDir/manifests/*.nixmanifest") {
unlink $manifest or die "cannot remove `$manifest': $!";
}
# Pull cache manifests.
foreach my $url (@channels) {
#print "pulling cache manifest from `$url'\n";

26
scripts/nix-pull.in
View file

@ -51,7 +51,7 @@ sub processURL {
# First see if a bzipped manifest is available.
if (system("@curl@ --fail --silent --head '$url'.bz2 > /dev/null") == 0) {
print "obtaining list of Nix archives at `$url.bz2'...\n";
print "fetching list of Nix archives at `$url.bz2'...\n";
my $bzipped = downloadFile "$url.bz2";
$manifest = "$tmpDir/MANIFEST";
@ -92,11 +92,31 @@ sub processURL {
my $hash = `$binDir/nix-hash --flat '$manifest'`
or die "cannot hash `$manifest'";
chomp $hash;
my $urlFile = "$manifestDir/$baseName-$hash.url";
open URL, ">$urlFile" or die "cannot create `$urlFile'";
print URL "$url";
close URL;
my $finalPath = "$manifestDir/$baseName-$hash.nixmanifest";
system("@coreutils@/ln", "-sfn", "$manifest", "$finalPath") == 0
unlink $finalPath if -e $finalPath;
symlink("$manifest", "$finalPath")
or die "cannot link `$finalPath to `$manifest'";
# Delete all old manifests downloaded from this URL.
for my $urlFile2 (glob "$manifestDir/*.url") {
next if $urlFile eq $urlFile2;
open URL, "<$urlFile2" or die;
my $url2 = <URL>;
chomp $url2;
close URL;
next unless $url eq $url2;
my $base = $urlFile2; $base =~ s/.url$//;
unlink "${base}.url";
unlink "${base}.nixmanifest";
}
}
while (@ARGV) {