The source code history of Itcl is kept by a distributed version control system called Fossil. The master copy of Itcl sources are kept here at
https://core.tcl-lang.org/itcl
and a mirror server is kept at
http://mirror1.tcl.tk/itcl/
in case anything goes wrong with the master.
Tracking or contributing to the Itcl sources requires a release of Fossil that supports the
fossil open --nested
option. Use
fossil version
to determine the vintage of your fossil client program, and confirm that it is no older than 2011-02-08. Upgrade as necessary.
Then start by cloning the repositories for Itcl and tclconfig, a set of TEA build support files that Itcl makes use of.
fossil clone https://core.tcl-lang.org/itcl /path/to/itcl.fossil
fossil clone https://core.tcl-lang.org/tclconfig/ /path/to/tclconfig.fossil
Then construct your workspace:
cd /my/work/space
mkdir itcl
cd itcl
fossil open /path/to/itcl.fossil trunk
mkdir tclconfig
cd tclconfig
fossil open --nested /path/to/tclconfig.fossil trunk
And at that point you have in /my/work/space/itcl the current development state of the source files of Itcl and tclconfig, which you can build, install, edit, etc.