/usr/share/mime/packages/ is in gtkwave 3.3.66-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/mime/packages/x-gtkwave-extension-ae2.xml
/usr/share/mime/packages/x-gtkwave-extension-aet.xml
/usr/share/mime/packages/x-gtkwave-extension-evcd.xml
/usr/share/mime/packages/x-gtkwave-extension-fst.xml
/usr/share/mime/packages/x-gtkwave-extension-ghw.xml
/usr/share/mime/packages/x-gtkwave-extension-gtkw.xml
/usr/share/mime/packages/x-gtkwave-extension-lx2.xml
/usr/share/mime/packages/x-gtkwave-extension-lxt.xml
/usr/share/mime/packages/x-gtkwave-extension-lxt2.xml
/usr/share/mime/packages/x-gtkwave-extension-vcd.xml
/usr/share/mime/packages/x-gtkwave-extension-vzt.xml