rules_vivado: FPGA Synthesis and Place-and-Route in Bazel

rules_vivado drives the AMD/Xilinx Vivado FPGA toolchain from Bazel: VHDL and Verilog compile, elaborate, simulate, synthesize, place-and-route, generate a bitstream, and program the device, all as hermetic Bazel build actions rather than clicks in a GUI or a pile of ad-hoc TCL. This is the module that turns the Cocoapuffs board flow into bazel build. This post kicks off a short series. Over the…