anchor.diff:  , gnutls
   , gsettings-desktop-schemas
   , libproxy
  -, p11_kit
  +, p11-kit
   
   , channel
   }:
  
positive.code:     "--with-gnome-proxy"
      "--${boolWt (gnutls != null)}-gnutls"
      "--with-ca-certificates=/etc/ssl/certs/ca-certificates.crt"
      "--${boolWt (p11_kit != null)}-pkcs11"
    ];
  
    preBuild = ''
  
negative.code:     gnutls
      gsettings-desktop-schemas
      libproxy
      p11-kit
    ];
  
    configureFlags = [
  