Hi @User, this is Wajeh (RA at MERL, Pakistan). We really appreciate the initiative by Google +efabless and skywater. We are working on our first tapeout of an SoC through the shuttle program with skywater pdk using OPENLANE. I needed a little guidance regarding the location of the variables like LIB_MIN, LIB_MAX etc. which are not in the configuration/synthesis.tcl. Where are these variables being set up?