/usr/share/tcltk/tcl8.5/Tix8.4.3/pkgIndex.tcl is in tix 8.4.3-4ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | if {[catch {package require Tcl 8.4}]} return
package ifneeded Tix 8.4.3 \
[list load [file join /usr/lib libTix8.4.3.so.1] Tix]
|