/etc/fonts/conf.d/65-fonts-texgyre.conf is in fonts-texgyre 20150923-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /etc/fonts/conf.d/../conf.avail/65-fonts-texgyre.conf
/etc/fonts/conf.d/../conf.avail/65-fonts-texgyre.conf