Add support for uncompressed NARs in binary caches

Issue NixOS/hydra#102.

3 files changed, 12 insertions, 8 deletions

diff --git a/scripts/download-from-binary-cache.pl.in b/scripts/download-from-binary-cache.pl.in
index abd1f7b712c4..ab72e83e8f35 100644
--- a/scripts/download-from-binary-cache.pl.in
+++ b/scripts/download-from-binary-cache.pl.in
@@ -513,8 +513,9 @@ sub downloadBinary {
         next unless defined $info;
 
         my $decompressor;
-        if ($info->{compression} eq "bzip2") { $decompressor = "$Nix::Config::bzip2 -d"; }
-        elsif ($info->{compression} eq "xz") { $decompressor = "$Nix::Config::xz -d"; }
+        if ($info->{compression} eq "bzip2") { $decompressor = "| $Nix::Config::bzip2 -d"; }
+        elsif ($info->{compression} eq "xz") { $decompressor = "| $Nix::Config::xz -d"; }
+        elsif ($info->{compression} eq "none") { $decompressor = ""; }
         else {
             print STDERR "unknown compression method ‘$info->{compression}’\n";
             next;
@@ -522,7 +523,7 @@ sub downloadBinary {
         my $url = "$cache->{url}/$info->{url}"; # FIXME: handle non-relative URLs
         print STDERR "\n*** Downloading ‘$url’ to ‘$storePath’...\n";
         checkURL $url;
-        if (system("$Nix::Config::curl --fail --location --insecure '$url' | $decompressor | $Nix::Config::binDir/nix-store --restore $destPath") != 0) {
+        if (system("$Nix::Config::curl --fail --location --insecure '$url' $decompressor | $Nix::Config::binDir/nix-store --restore $destPath") != 0) {
             warn "download of `$url' failed" . ($! ? ": $!" : "") . "\n";
             next;
         }
diff --git a/scripts/download-using-manifests.pl.in b/scripts/download-using-manifests.pl.in
index 0471a9e1fac4..9d4b89bac9a2 100755
--- a/scripts/download-using-manifests.pl.in
+++ b/scripts/download-using-manifests.pl.in
@@ -344,17 +344,18 @@ while (scalar @path > 0) {
         checkURL $narFile->{url};
 
         my $decompressor =
-            $narFile->{compressionType} eq "bzip2" ? "$Nix::Config::bzip2 -d" :
-            $narFile->{compressionType} eq "xz" ? "$Nix::Config::xz -d" :
+            $narFile->{compressionType} eq "bzip2" ? "| $Nix::Config::bzip2 -d" :
+            $narFile->{compressionType} eq "xz" ? "| $Nix::Config::xz -d" :
+            $narFile->{compressionType} eq "none" ? "" :
             die "unknown compression type `$narFile->{compressionType}'";
 
         if ($curStep < $maxStep) {
             # The archive will be used a base to a patch.
-            system("$curl '$narFile->{url}' | $decompressor > $tmpNar") == 0
+            system("$curl '$narFile->{url}' $decompressor > $tmpNar") == 0
                 or die "cannot download and unpack `$narFile->{url}' to `$v'\n";
         } else {
             # Unpack the archive to the target path.
-            system("$curl '$narFile->{url}' | $decompressor | $Nix::Config::binDir/nix-store --restore '$destPath'") == 0
+            system("$curl '$narFile->{url}' $decompressor | $Nix::Config::binDir/nix-store --restore '$destPath'") == 0
                 or die "cannot download and unpack `$narFile->{url}' to `$v'\n";
         }
 
diff --git a/scripts/nix-push.in b/scripts/nix-push.in
index 7a6670f67bd3..2c392c4155d7 100755
--- a/scripts/nix-push.in
+++ b/scripts/nix-push.in
@@ -34,6 +34,8 @@ for (my $n = 0; $n < scalar @ARGV; $n++) {
         exec "man nix-push" or die;
     } elsif ($arg eq "--bzip2") {
         $compressionType = "bzip2";
+    } elsif ($arg eq "--none") {
+        $compressionType = "none";
     } elsif ($arg eq "--force") {
         $force = 1;
     } elsif ($arg eq "--dest") {
@@ -202,7 +204,7 @@ for (my $n = 0; $n < scalar @storePaths2; $n++) {
     $compressedHash =~ /^[0-9a-z]+$/ or die "invalid hash";
     close HASH;
 
-    my $narName = "$compressedHash.nar." . ($compressionType eq "xz" ? "xz" : "bz2");
+    my $narName = "$compressedHash.nar" . ($compressionType eq "xz" ? ".xz" : $compressionType eq "bzip2" ? ".bz2" : "");
 
     my $narFile = "$narDir/$narName";
     (-f $narFile) or die "NAR file for $storePath not found";