* Don't decompress the manifests in /nix/var/nix/manifest. This saves

  disk space, and, since they're typically only decompressed once (to
  fill the manifest cache), doesn't make things slower.

1 files changed, 8 insertions, 2 deletions

diff --git a/perl/lib/Nix/Manifest.pm b/perl/lib/Nix/Manifest.pm
index 21c61d284f..9c891abb8b 100644
--- a/perl/lib/Nix/Manifest.pm
+++ b/perl/lib/Nix/Manifest.pm
@@ -53,8 +53,14 @@ sub addPatch {
 sub readManifest_ {
     my ($manifest, $addNAR, $addPatch) = @_;
 
-    open MANIFEST, "<$manifest"
-        or die "cannot open `$manifest': $!";
+    # Decompress the manifest if necessary.
+    if ($manifest =~ /\.bz2$/) {
+        open MANIFEST, "$Nix::Config::bzip2 -d < $manifest |"
+            or die "cannot decompress `$manifest': $!";
+    } else {
+        open MANIFEST, "<$manifest"
+            or die "cannot open `$manifest': $!";
+    }
 
     my $inside = 0;
     my $type;