iftop: improve meta attributes

- The description attribute is very long, so rename it to
  longDescription and add a short text in the description attribute.
- Use licenses.gpl2Plus instead of free form text "GPLv2+".
- Add platforms attribute so that hydra will build the package.

1 files changed, 9 insertions, 4 deletions

diff --git a/pkgs/tools/networking/iftop/default.nix b/pkgs/tools/networking/iftop/default.nix
index 3a9c0e10a78..a1f5026fb28 100644
--- a/pkgs/tools/networking/iftop/default.nix
+++ b/pkgs/tools/networking/iftop/default.nix
@@ -18,10 +18,15 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ncurses libpcap];
 
-  meta = {
-    description = "iftop does for network usage what top(1) does for CPU usage. It listens to network traffic on a named interface and displays a table of current bandwidth usage by pairs of hosts.";
-
-    license = "GPLv2+";
+  meta = with stdenv.lib; {
+    description = "Display bandwidth usage on a network interface";
+    longDescription = ''
+      iftop does for network usage what top(1) does for CPU usage. It listens
+      to network traffic on a named interface and displays a table of current
+      bandwidth usage by pairs of hosts.
+    '';
+    license = licenses.gpl2Plus;
     homepage = http://ex-parrot.com/pdw/iftop/;
+    platforms = platforms.linux;
   };
 }