nextpnr-generic 0.4-1 (s390x binary) in ubuntu lunar

 nextpnr is a FPGA place and route tool. Its purpose is to turn a
 topological description of digital hardware produced by an FPGA logic
 synthesis tool such as yosys into an elaborate map of connections between
 the hardwired functional units available inside the FPGA's fabric.
 .
 In order to verify the fully implemented design for proper operation at
 speed timing-analysis of the design is also supported.
 .
 nextpnr-generic supports nextpnr's synthetic "generic" FPGA.