export OPENLANE_ROOT=~/opt/silicon/openlane # you need to export this whenever you start a new shell

export PDK_ROOT=~/opt/silicon/pdks # you need to export this whenever you start a new shell
export PDKPATH=$PDK_ROOT/sky130A


# export the PDK variant depending on your shuttle, if you don't know leave it to the default

# for sky130 MPW shuttles....
export PDK=sky130A