libressl: move netcat stuff to '.nc' output

I still feel weird about doing this because it seems a little hacky
but this was requested by @Mic92 and seems understandable to not want
to mix up libressl outputs with netcat stuff.

pkgs/development/libraries/libressl/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl }:
+{ stdenv, fetchurl, lib }:
 
 let
 
@@ -15,11 +15,16 @@ let
 
     enableParallelBuilding = true;
 
-    outputs = [ "bin" "dev" "out" "man" ];
+    outputs = [ "bin" "dev" "out" "man" "nc" ];
+
+    postFixup = ''
+      moveToOutput "bin/nc" "$nc"
+      moveToOutput "share/man/man1/nc.1${lib.optionalString (!dontGzipMan) ".gz"}" "$nc"
+    '';
 
     dontGzipMan = if stdenv.isDarwin then true else null; # not sure what's wrong
 
-    meta = with stdenv.lib; {
+    meta = with lib; {
       description = "Free TLS/SSL implementation";
       homepage    = "http://www.libressl.org";
       platforms   = platforms.all;