forked from lix-project/lix
e4d4969ae9
useful way to transfer the closure of a store path to another machine. These commands provide functionality previously possible through `nix-push --copy'. However, they are much more convenient in many situations (though possibly less efficient). Example: $ nix-pack-closure /nix/store/hj232g1r...-subversion-1.3.0 > svn.closure (on another machine:) $ nix-unpack-closure < svn.closure Note that Subversion is added to the store, but not installed into a user environment. One should do `nix-env -i /nix/store/hj232g1r...-subversion-1.3.0' for that. Another example: copy the application Azureus to the machine `scratchy' through ssh: $ nix-pack-closure $(which azureus) | ssh scratchy nix-unpack-closure
68 lines
1.8 KiB
Plaintext
68 lines
1.8 KiB
Plaintext
#! @perl@ -w
|
|
|
|
# This tool computes the closure of a path (using "nix-store --query
|
|
# --requisites") and puts the contents of each path in the closure in
|
|
# a big NAR archive that can be installed on another Nix installation
|
|
# using "nix-unpack-closure".
|
|
|
|
# TODO: make this program "streamy", i.e., don't use a temporary
|
|
# directory.
|
|
|
|
use strict;
|
|
use POSIX qw(tmpnam);
|
|
|
|
my $binDir = $ENV{"NIX_BIN_DIR"};
|
|
$binDir = "@bindir@" unless defined $binDir;
|
|
|
|
my $tmpDir;
|
|
do { $tmpDir = tmpnam(); }
|
|
until mkdir $tmpDir, 0777;
|
|
END { system "rm -rf '$tmpDir'"; }
|
|
mkdir "$tmpDir/contents", 0777 or die;
|
|
mkdir "$tmpDir/references", 0777 or die;
|
|
mkdir "$tmpDir/derivers", 0777 or die;
|
|
|
|
|
|
|
|
my %storePaths;
|
|
|
|
|
|
while (@ARGV) {
|
|
my $storePath = shift @ARGV;
|
|
|
|
# Get the closure of this path.
|
|
my $pid = open(READ,
|
|
"$binDir/nix-store --query --requisites " .
|
|
"--force-realise '$storePath'|") or die;
|
|
|
|
while (<READ>) {
|
|
chomp;
|
|
die "bad: $_" unless /^\//;
|
|
$storePaths{$_} = "";
|
|
}
|
|
|
|
close READ or die "nix-store failed: $?";
|
|
}
|
|
|
|
|
|
foreach my $storePath (sort(keys %storePaths)) {
|
|
print STDERR "packing `$storePath'...\n";
|
|
|
|
$storePath =~ /\/([^\/]+)$/;
|
|
my $name = $1;
|
|
|
|
system("$binDir/nix-store --dump '$storePath' > $tmpDir/contents/$name") == 0
|
|
or die "nix-store --dump failed on `$storePath': $?";
|
|
|
|
system("$binDir/nix-store --query --references '$storePath' > $tmpDir/references/$name") == 0
|
|
or die "nix-store --query --references failed on `$storePath': $?";
|
|
|
|
system("$binDir/nix-store --query --deriver '$storePath' > $tmpDir/derivers/$name") == 0
|
|
or die "nix-store --query --deriver failed on `$storePath': $?";
|
|
}
|
|
|
|
|
|
# Write a NAR archive of everything to standard output.
|
|
system("nix-store --dump '$tmpDir'") == 0
|
|
or die "nix-store --dump failed";
|