use dontBuild instead of hacks

changes:
 * buildPhase = "true"
 * buildPhase = ":"

pkgs/tools/admin/sec/default.nix

@@ -10,14 +10,14 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ perl ];
 
-  configurePhase = ":";
-  buildPhase = ":";
+  dontBuild = false;
+  doCheck = false;
+
   installPhase = ''
     mkdir -p $out/bin $out/share/man/man1
     cp sec $out/bin
     cp sec.man $out/share/man/man1/sec.1
   '';
-  doCheck = false;
 
   meta = {
     homepage = "http://simple-evcorr.sourceforge.net/";
@@ -26,5 +26,4 @@ stdenv.mkDerivation rec {
     maintainers = [ stdenv.lib.maintainers.tv ];
     platforms = stdenv.lib.platforms.all;
   };
-
 }