anchor.diff:    patches = [ ./dont-keep-configure-flags.patch ./remove-mkdir-var.patch ] ++
       stdenv.lib.optional stdenv.isDarwin ./darwin-openssl-linking-fix.patch;
   
  -  buildInputs = [ openssl libtool perl libxml2 ];
  +  buildInputs = [ openssl libtool perl libxml2 ] ++
  +    stdenv.lib.optional stdenv.isLinux libseccomp;
   
     configureFlags = [
       "--localstatedir=/var"
  
positive.code:     "--without-pkcs11"
      "--without-purify"
      "--without-python"
    ];
  
    postInstall = ''
  
negative.code: { stdenv, fetchurl, openssl, libtool, perl, libxml2
  , libseccomp ? null }:
  
  let version = "9.10.4-P3"; in
  
  