refactor: migrate from yosys to yowasp-yosys

yowasp-yosys can be installed from pip, so we no longer require the user to install yosys separately.

also freeze requirements.txt versions for reproducible builds

project.py

@@ -46,7 +46,7 @@ class Project():
         source_list = " ".join(sources)
 
         json_file = 'ports.json'
-        yosys_cmd = f"yosys -qp 'read_verilog -lib -sv {source_list}; hierarchy -top {top} ; proc; write_json {json_file}'"
+        yosys_cmd = f"yowasp-yosys -qp 'read_verilog -lib -sv {source_list}; hierarchy -top {top} ; proc; write_json {json_file}'"
         p = subprocess.run(yosys_cmd, shell=True)
         if p.returncode != 0:
             logging.error(f"yosys port read failed for {self}")

requirements.txt

@@ -1,7 +1,29 @@
-pytz
-gdstk
-stripe
-GitPython
-cairosvg
-requests
-PyYAML
+appdirs==1.4.4
+cairocffi==1.6.0
+CairoSVG==2.7.0
+certifi==2023.5.7
+cffi==1.15.1
+charset-normalizer==3.1.0
+click==8.1.3
+cssselect2==0.7.0
+defusedxml==0.7.1
+gdstk==0.9.42
+gitdb==4.0.10
+GitPython==3.1.31
+idna==3.4
+importlib-resources==5.12.0
+numpy==1.24.3
+Pillow==9.5.0
+pycparser==2.21
+pytz==2023.3
+PyYAML==6.0
+requests==2.31.0
+smmap==5.0.0
+stripe==5.4.0
+tinycss2==1.2.1
+urllib3==2.0.3
+wasmtime==9.0.0
+webencodings==0.5.1
+yowasp-runtime==1.22
+yowasp-yosys==0.30.0.0.post538
+zipp==3.15.0