1 files changed, 7 insertions, 1 deletions
diff --git a/pkgs/tools/networking/ntp/default.nix b/pkgs/tools/networking/ntp/default.nix
index 3b707bbb8a18..b84c9cccfeb0 100644
--- a/pkgs/tools/networking/ntp/default.nix
+++ b/pkgs/tools/networking/ntp/default.nix
@@ -1,4 +1,6 @@
-{stdenv, fetchurl}:
+{stdenv, fetchurl, libcap}:
+
+assert stdenv.isLinux -> libcap != null;
  
 stdenv.mkDerivation {
   name = "ntp-4.2.2p4";
@@ -6,4 +8,8 @@ stdenv.mkDerivation {
     url = http://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-4.2.2p4.tar.gz;
     md5 = "916fe57525f8327f340b203f129088fa";
   };
+  configureFlags = "
+    ${if stdenv.isLinux then "--enable-linuxcaps" else ""}
+  ";
+  buildInputs = if stdenv.isLinux then [libcap] else [];
 }