Ubuntu

Binary package “libtcl8.6” in ubuntu bionic

  1. Bionic (18.04)
  2. libtcl8.6

Tcl (the Tool Command Language) v8.6 - run-time library files

 Tcl is a powerful, easy to use, embeddable, cross-platform interpreted
 scripting language. This package contains the Tcl library and auxiliary
 code which allows one to run Tcl-enabled applications. This version
 includes thread support.

Source package