I’ ve purged nginx and installed nginx new from sources.
The Debian package seems to be compiled without gzip_static and seems
also fragile while removing the package with apt-get remove nginx. This
is not sufficient and results i a broken nginx (missing files)
installation after a new install. (IN MY CASE ON A 12 months old testing
installation - maybe thats to old) Do a apt-get --purge remove nginx and
a new installation should be no problem.