* New kind of manifest object: "localPath", which denotes that a store

path can be created by copying it from another location in the file
  system.  This is useful in the NixOS installation.
This commit is contained in:
Eelco Dolstra 2007-01-23 16:50:19 +00:00
parent 36d9258c0d
commit bae75ca5a1
8 changed files with 73 additions and 22 deletions

View file

@ -34,17 +34,31 @@ print "\n*** Trying to download/patch `$targetPath'\n";
# Load all manifests.
my %narFiles;
my %localPaths;
my %patches;
for my $manifest (glob "$manifestDir/*.nixmanifest") {
# print STDERR "reading $manifest\n";
if (readManifest($manifest, \%narFiles, \%patches) < 3) {
if (readManifest($manifest, \%narFiles, \%localPaths, \%patches) < 3) {
print STDERR "you have an old-style manifest `$manifest'; please delete it\n";
exit 1;
}
}
# If we can copy from a local path, do that.
my $localPathList = $localPaths{$targetPath};
foreach my $localPath (@{$localPathList}) {
my $sourcePath = $localPath->{copyFrom};
if (-e $sourcePath) {
print "\n*** Step 1/1: copying from $sourcePath\n";
system("@bindir@/nix-store --dump $sourcePath | @bindir@/nix-store --restore $targetPath") == 0
or die "cannot copy `$sourcePath' to `$targetPath'";
exit 0;
}
}
# Build a graph of all store paths that might contribute to the
# construction of $targetPath, and the special node "start". The
# edges are either patch operations, or downloads of full NAR files.

View file

@ -28,16 +28,18 @@ print "TEMP = $tmpDir\n";
#END { rmdir $tmpDir; }
my %srcNarFiles;
my %srcLocalPaths;
my %srcPatches;
my %dstNarFiles;
my %dstLocalPaths;
my %dstPatches;
readManifest "$srcDir/MANIFEST",
\%srcNarFiles, \%srcPatches;
\%srcNarFiles, \%srcLocalPaths, \%srcPatches;
readManifest "$dstDir/MANIFEST",
\%dstNarFiles, \%dstPatches;
\%dstNarFiles, \%dstLocalPaths, \%dstPatches;
sub findOutputPaths {

View file

@ -7,11 +7,12 @@ use readcache;
# Read the manifests.
my %narFiles;
my %localPaths;
my %patches;
foreach my $manifest (@ARGV) {
print STDERR "loading $manifest\n";
if (readManifest($manifest, \%narFiles, \%patches, 1) < 3) {
if (readManifest($manifest, \%narFiles, \%localPaths, \%patches, 1) < 3) {
# die "manifest `$manifest' is too old (i.e., for Nix <= 0.7)\n";
}
}

View file

@ -6,11 +6,12 @@ use readcache;
my %allNarFiles;
my %allLocalPaths;
my %allPatches;
foreach my $manifest (glob "/data/webserver/dist/*/*/MANIFEST") {
print STDERR "loading $manifest\n";
readManifest($manifest, \%allNarFiles, \%allPatches, 1);
readManifest($manifest, \%allNarFiles, \%allLocalPaths, \%allPatches, 1);
}

View file

@ -28,6 +28,7 @@ umask 0022;
# Process the URLs specified on the command line.
my %narFiles;
my %localPaths;
my %patches;
my $skipWrongStore = 0;
@ -42,7 +43,7 @@ sub processURL {
"'$url' > '$manifest'") == 0
or die "curl failed: $?";
if (readManifest($manifest, \%narFiles, \%patches) < 3) {
if (readManifest($manifest, \%narFiles, \%localPaths, \%patches) < 3) {
die "manifest `$url' is too old (i.e., for Nix <= 0.7)\n";
}
@ -80,7 +81,7 @@ while (@ARGV) {
}
my $size = scalar (keys %narFiles);
my $size = scalar (keys %narFiles) + scalar (keys %localPaths);
print "$size store paths in manifest\n";
@ -90,19 +91,32 @@ print STDERR "registering substitutes...\n";
my $pid = open(WRITE, "|$binDir/nix-store --register-substitutes")
or die "cannot run nix-store";
foreach my $storePath (keys %narFiles) {
my $narFileList = $narFiles{$storePath};
foreach my $narFile (@{$narFileList}) {
sub writeRegistration {
my $storePath = shift;
my $object = shift;
print WRITE "$storePath\n";
print WRITE "$narFile->{deriver}\n";
print WRITE "$object->{deriver}\n";
print WRITE "$libexecDir/nix/download-using-manifests.pl\n";
print WRITE "0\n";
my @references = split " ", $narFile->{references};
my @references = split " ", $object->{references};
my $count = scalar @references;
print WRITE "$count\n";
foreach my $reference (@references) {
print WRITE "$reference\n";
}
}
foreach my $storePath (keys %narFiles) {
my $narFileList = $narFiles{$storePath};
foreach my $narFile (@{$narFileList}) {
writeRegistration $storePath, $narFile;
}
}
foreach my $storePath (keys %localPaths) {
my $localPathList = $localPaths{$storePath};
foreach my $localPath (@{$localPathList}) {
writeRegistration $storePath, $localPath;
}
}

View file

@ -34,6 +34,7 @@ sub addPatch {
sub readManifest {
my $manifest = shift;
my $narFiles = shift;
my $localPaths = shift;
my $patches = shift;
my $allowConflicts = shift;
$allowConflicts = 0 unless defined $allowConflicts;
@ -57,6 +58,7 @@ sub readManifest {
my $references;
my $deriver;
my $hashAlgo;
my $copyFrom;
while (<MANIFEST>) {
chomp;
@ -125,9 +127,25 @@ sub readManifest {
}, $allowConflicts;
}
elsif ($type eq "localPath") {
$$localPaths{$storePath} = []
unless defined $$localPaths{$storePath};
my $localPathsList = $$localPaths{$storePath};
# !!! remove duplicates
push @{$localPathsList},
{ copyFrom => $copyFrom, references => $references
, deriver => ""
};
}
}
elsif (/^\s*StorePath:\s*(\/\S+)\s*$/) { $storePath = $1; }
elsif (/^\s*CopyFrom:\s*(\/\S+)\s*$/) { $copyFrom = $1; }
elsif (/^\s*Hash:\s*(\S+)\s*$/) { $hash = $1; }
elsif (/^\s*URL:\s*(\S+)\s*$/) { $url = $1; }
elsif (/^\s*Size:\s*(\d+)\s*$/) { $size = $1; }
@ -158,6 +176,7 @@ sub writeManifest
my $manifest = shift;
my $narFiles = shift;
my $patches = shift;
my $copySources = shift;
open MANIFEST, ">$manifest.tmp"; # !!! check exclusive

View file

@ -6,13 +6,12 @@ use readmanifest;
for my $p (@ARGV) {
my %narFiles;
my %localPaths;
my %patches;
readManifest $p,
\%narFiles, \%patches;
readManifest $p, \%narFiles, \%localPaths, \%patches;
%patches = ();
writeManifest $p,
\%narFiles, \%patches;
writeManifest $p, \%narFiles, \%patches;
}

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@ -8,9 +8,10 @@ die unless scalar @ARGV == 2;
my $cache = $ARGV[0];
my $manifest = $ARGV[1];
my %narFiles;
my %localPaths;
my %patches;
readManifest $manifest, \%narFiles, \%patches;
readManifest $manifest, \%narFiles, \%localPaths, \%patches;
foreach my $storePath (keys %narFiles) {
my $narFileList = $narFiles{$storePath};