diff --git a/release.nix b/release.nix
index 2f69c7d8f..b1c4c64c8 100644
--- a/release.nix
+++ b/release.nix
@@ -82,8 +82,10 @@ let
         ''; # */
 
         hydraPath = stdenv.lib.concatStringsSep ":" (map (p: "${p}/bin") [
-          libxslt sqlite subversion nix coreutils
-          gzip bzip2 gnused graphviz
+          libxslt sqlite subversion nix coreutils findutils
+          gzip bzip2 lzma gnutar unzip
+          gnused graphviz
+          rpm dpkg
         ]);
 
         installPhase = ''
diff --git a/src/lib/Hydra/Controller/Build.pm b/src/lib/Hydra/Controller/Build.pm
index e6cddeb4a..bcef22a87 100644
--- a/src/lib/Hydra/Controller/Build.pm
+++ b/src/lib/Hydra/Controller/Build.pm
@@ -90,7 +90,7 @@ sub showLog {
 }
 
 
-sub download : Chained('build') PathPart('download') {
+sub download : Chained('build') PathPart {
     my ($self, $c, $productnr, @path) = @_;
 
     my $product = $c->stash->{build}->buildproducts->find({productnr => $productnr});
@@ -125,6 +125,60 @@ sub download : Chained('build') PathPart('download') {
 }
 
 
+sub contents : Chained('build') PathPart {
+    my ($self, $c, $productnr, @path) = @_;
+
+    my $product = $c->stash->{build}->buildproducts->find({productnr => $productnr});
+    notFound($c, "Build doesn't have a product $productnr.") if !defined $product;
+
+    my $path = $product->path;
+    
+    notFound($c, "Product $path has disappeared.") unless -e $path;
+
+    my $res;
+
+    if ($product->type eq "nix-build") {
+        $res = `cd $path && find . -print0 | xargs -0 ls -ld --`;
+        error($c, "`ls -lR' error: $?") if $? != 0;
+    }
+
+    elsif ($path =~ /\.rpm$/) {
+        $res = `rpm --query --info --package "$path"`;
+        error($c, "RPM error: $?") if $? != 0;
+        $res .= "===\n";
+        $res .= `rpm --query --list --verbose --package "$path"`;
+        error($c, "RPM error: $?") if $? != 0;
+    }
+
+    elsif ($path =~ /\.deb$/) {
+        $res = `dpkg-deb --info "$path"`;
+        error($c, "`dpkg-deb' error: $?") if $? != 0;
+        $res .= "===\n";
+        $res .= `dpkg-deb --contents "$path"`;
+        error($c, "`dpkg-deb' error: $?") if $? != 0;
+    }
+
+    elsif ($path =~ /\.tar(\.gz|\.bz2|\.lzma)?$/ ) {
+        $res = `tar tvfa "$path"`;
+        error($c, "`tar' error: $?") if $? != 0;
+    }
+
+    elsif ($path =~ /\.zip$/ ) {
+        $res = `unzip -v "$path"`;
+        error($c, "`unzip' error: $?") if $? != 0;
+    }
+
+    else {
+        error($c, "Unsupported file type.");
+    }
+
+    die unless $res;
+    
+    $c->stash->{'plain'} = { data => $res };
+    $c->forward('Hydra::View::Plain');
+}
+
+
 sub runtimedeps : Chained('build') PathPart('runtime-deps') {
     my ($self, $c) = @_;
     
diff --git a/src/root/product-list.tt b/src/root/product-list.tt
index 5076a8b5e..6b90c54a1 100644
--- a/src/root/product-list.tt
+++ b/src/root/product-list.tt
@@ -10,6 +10,8 @@
           _ (product.name ? "/" _ product.name : "")
           _ (product.defaultpath ? "/" _ product.defaultpath : "") %]
       
+      [% contents = c.uri_for('/build' build.id 'contents' product.productnr) %]
+      
       [% SWITCH product.type %]
 
       [% CASE "nix-build" %]
@@ -20,7 +22,7 @@
           <img src="/static/images/nix-build.png" alt="Source" />
           One-click install of Nix package <tt>[% build.nixname %]</tt>
         </a>
-        [<a class="productDetailsToggle" href="javascript:">help</a>]
+        [<a class="productDetailsToggle" href="javascript:">help</a>, <a href="[% contents %]">contents</a>]
         <div class="help productDetails">
           <p>If you have Nix installed on your machine, you can
           install this package and all its dependencies automatically
@@ -96,7 +98,7 @@
             File <tt>[% product.name %]</tt> of type <tt>[% product.subtype %]</tt>
           [% END %]
         </a>
-        [<a class="productDetailsToggle" href="javascript:">details</a>]
+        [<a class="productDetailsToggle" href="javascript:">details</a>, <a href="[% contents %]">contents</a>]
         <div class="productDetails">
           <table>
             <tr>