$ tclsh8.5  /usr/local/lib/tcl8.5/clock.tcl
can't find package msgcat 1.4
    while executing
"package require msgcat 1.4"
    ("uplevel" body line 2)
    invoked from within
"uplevel \#0 {
    package require msgcat 1.4
    if { $::tcl_platform(platform) eq {windows} } {
	if { [catch { package require registry 1.1 }] } {
	 ..."
    (file "/usr/local/lib/tcl8.5/clock.tcl" line 23)