can't read "dir": no such variable
    while executing
"file join $dir libbiotext1.0.so"
    (in namespace eval "::request" script line 5)
    invoked from within
"namespace eval ::request $script"
    ("::try" body line 12)
OUTPUT BUFFER:
#
# Tcl package index file
#
package ifneeded biotext 1.0 \
    "[list load [file join $dir libbiotext1.0.so]] ; [list source [file join $dir biotext.tcl]] ; puts \"2024 new biotext loaded\""