/usr/share/tcltk/critcl-class1.0.6/pkgIndex.tcl is in critcl 3.1.9-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 | package ifneeded critcl::class 1.0.6 [list source [file join $dir class.tcl]]
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