kbs means Tclkit Kitgen Build System
RZ I don´t know this but will have a look. Currently the patches are included in the Package definitions.
UKo Do you have an example? I haven't found any mention of patch in defs.kbs or kbs.tcl.
RZ Now a Patch function is included in kbs.tcl. Also a Kit function to simplify building of *.kit files and a Tcl function to help building tcl-only extensions.