7dd91d3779
sharing package directories (i.e., the result of building a Nix descriptor). `nix-pull-prebuilts' obtains a list of all known prebuilts by consulting the paths and URLs specified in $prefix/etc/nix/prebuilts.conf. The mappings ($pkghash, $prebuilthash) and ($prebuilthash, $location) are registered with Nix so that it can use the prebuilt with hash $prebuilthash when installing a package with hash $pkghash by downloading and unpacking $location. `nix-push-prebuilts' creates prebuilts for all packages for which no prebuilt is known to exist. It can then optionally upload these to the network through rsync. `nix-[pull|push]-prebuilts' just provide a policy. Nix provides the mechanism through the `nix [export|regprebuilt|regurl]' commands.
41 lines
1 KiB
Perl
Executable file
41 lines
1 KiB
Perl
Executable file
#! /usr/bin/perl -w
|
|
|
|
my $prefix = $ENV{"NIX"} || "/nix"; # !!! use prefix
|
|
my $etcdir = "$prefix/etc/nix";
|
|
my $exportdir = "$prefix/var/nix/prebuilts/exports";
|
|
my $knowns = "$prefix/var/nix/known-prebuilts";
|
|
|
|
# For performance, put the known hashes in an associative array.
|
|
my %knowns = ();
|
|
open KNOWNS, "<$knowns";
|
|
while (<KNOWNS>) {
|
|
next unless /([0-9a-z]{32})/;
|
|
$knowns{$1} = 1;
|
|
}
|
|
close KNOWNS;
|
|
|
|
# For each installed package, check whether a prebuilt is known.
|
|
|
|
open PKGS, "nix listinst|";
|
|
open KNOWNS, ">>$knowns";
|
|
|
|
while (<PKGS>) {
|
|
chomp;
|
|
next unless /([0-9a-z]{32})/;
|
|
my $pkghash = $1;
|
|
if (!defined $knowns{$1}) {
|
|
# No known prebuilt exists for this package; so export it.
|
|
print "exporting $pkghash...\n";
|
|
system "nix export '$exportdir' $pkghash";
|
|
if ($?) { die "`nix export' failed"; }
|
|
print KNOWNS "$pkghash\n";
|
|
}
|
|
}
|
|
|
|
close KNOWNS;
|
|
close PKGS;
|
|
|
|
# Push the prebuilts to the server. !!! FIXME
|
|
|
|
system "rsync -av -e ssh '$exportdir' losser:/home/eelco/public_html/nix-prebuilts/";
|