can't read "dir": no such variable
    while executing
"file join $dir practcl.tcl"
    (in namespace eval "::request" script line 3)
    invoked from within
"namespace eval ::request $script"
    ("::try" body line 12)
OUTPUT BUFFER:
###
if {![package vsatisfies [package provide Tcl] 8.6]} {return}
package ifneeded practcl 0.16.4 [list source [file join $dir practcl.tcl]]