![Eelco Dolstra](/assets/img/avatar_default.png)
I.e. do what git does. I'm too lazy to keep the builtin help text up to date :-) Also add ‘--help’ to various commands that lacked it (e.g. nix-collect-garbage).
58 lines
1.4 KiB
Plaintext
Executable file
58 lines
1.4 KiB
Plaintext
Executable file
#! @perl@ -w @perlFlags@
|
|
|
|
use strict;
|
|
use Nix::Config;
|
|
|
|
my $profilesDir = "@localstatedir@/nix/profiles";
|
|
|
|
|
|
# Process the command line arguments.
|
|
my @args = ();
|
|
my $removeOld = 0;
|
|
my $dryRun = 0;
|
|
|
|
for my $arg (@ARGV) {
|
|
if ($arg eq "--delete-old" || $arg eq "-d") {
|
|
$removeOld = 1;
|
|
} elsif ($arg eq "--dry-run") {
|
|
$dryRun = 1;
|
|
} elsif ($arg eq "--help") {
|
|
exec "man nix-collect-garbage" or die;
|
|
} else {
|
|
push @args, $arg;
|
|
}
|
|
}
|
|
|
|
|
|
# If `-d' was specified, remove all old generations of all profiles.
|
|
# Of course, this makes rollbacks to before this point in time
|
|
# impossible.
|
|
|
|
sub removeOldGenerations;
|
|
sub removeOldGenerations {
|
|
my $dir = shift;
|
|
|
|
my $dh;
|
|
opendir $dh, $dir or die;
|
|
|
|
foreach my $name (sort (readdir $dh)) {
|
|
next if $name eq "." || $name eq "..";
|
|
$name = $dir . "/" . $name;
|
|
if (-l $name && (readlink($name) =~ /link/)) {
|
|
print STDERR "removing old generations of profile $name\n";
|
|
system("$Nix::Config::binDir/nix-env", "-p", $name, "--delete-generations", "old", $dryRun ? "--dry-run" : ());
|
|
}
|
|
elsif (! -l $name && -d $name) {
|
|
removeOldGenerations $name;
|
|
}
|
|
}
|
|
|
|
closedir $dh or die;
|
|
}
|
|
|
|
removeOldGenerations $profilesDir if $removeOld;
|
|
|
|
|
|
# Run the actual garbage collector.
|
|
exec "$Nix::Config::binDir/nix-store", "--gc", @args unless $dryRun;
|