GNU Time: Improve meta-information.

svn path=/nixpkgs/trunk/; revision=15288

pkgs/tools/misc/time/default.nix

@@ -2,11 +2,30 @@
 
 stdenv.mkDerivation {
   name = "time-1.7";
+
   src = fetchurl {
     url = mirror://gnu/time/time-1.7.tar.gz;
     sha256 = "0va9063fcn7xykv658v2s9gilj2fq4rcdxx2mn2mmy1v4ndafzp3";
   };
+
   meta = {
-    description = "Command for running programs and summarizing the system resources they use";
+    description = "GNU Time, a tool that runs programs and summarizes the system resources they use";
+
+    longDescription = ''
+      The `time' command runs another program, then displays
+      information about the resources used by that program, collected
+      by the system while the program was running.  You can select
+      which information is reported and the format in which it is
+      shown, or have `time' save the information in a file instead of
+      displaying it on the screen.
+
+      The resources that `time' can report on fall into the general
+      categories of time, memory, and I/O and IPC calls.  Some systems
+      do not provide much information about program resource use;
+      `time' reports unavailable information as zero values.
+    '';
+
+    license = "GPLv2+";
+    homepage = http://www.gnu.org/software/time/;
   };
 }