Try 2

pyproject.toml

@@ -35,7 +35,7 @@ name = "fpga-sim"  # REQUIRED, is the only field that cannot be marked as dynami
 # https://packaging.python.org/guides/single-sourcing-package-version/
 
 # dynamic = ["version"]
-version = "0.4.0a0"  # REQUIRED, although can be dynamic
+version = "0.4.0a1"  # REQUIRED, although can be dynamic
 
 # This is a one-line description or tagline of what your project does. This
 # corresponds to the "Summary" metadata field:

src/fpga_sim/fpga_sim.py

@@ -109,7 +109,7 @@ def fpga_sim_main():
             includes=incdirs,
             hdl_toplevel=test["toplevel"],
             build_dir=f"{test['base_path']}/sim_build",
-            #waves=test["waves"],
+            waves=test["waves"],
             defines=defines,
             build_args=build_args
         )