anchor.diff:  , fetchurl
   , intltool
   , lib
  +# , meson
  +# , ninja
   
   , glib
   , gnutls
  
positive.code:     libproxy
      p11-kit
    ];
  
    configureFlags = [
      "--disable-maintainer-mode"
  
negative.code:     "--with-ca-certificates=/etc/ssl/certs/ca-certificates.crt"
      "--${boolWt (p11-kit != null)}-pkcs11"
    ];
  
    # mesonFlags = [
    #   "-Dlibproxy_support=${boolTf (libproxy != null)}"
    #   "-Dgnome_proxy_support=true"
    #   "-Dtls_support=${boolTf (gnutls != null)}"
    #   # FIXME IMPURE
    #   "-Dca_certificates_path=/etc/ssl/certs/ca-certificates.crt"
    #   "-Dpkcs11_support=${boolTf (p11-kit != null)}"
    #   "-Dinstalled_tests=false"
    # ];
  
    preBuild = ''
      sed -i $(find . -name Makefile) \
  