Tcl is the de facto scripting standard for EDA (it's in thr name!), it's a quirky language, but what Xilinx has done is allow portability and compatability betw

Tcl is the de facto scripting standard for EDA (it's in thr name!), it's a quirky language, but what Xilinx has done is allow portability and compatability between it and major HW design tools. The low levels commands themselves are similar to ones ASIC designers would use, e.g. report_timing is the same as you would see in countless other EDA tools. Perhaps supporting python and TCL for scripting would be good, but not supprting TCL would have been a big mistake