Yosys fails fatally on empty designs

[smunaut]

Description

It's basically #218 that got broken by transition to python.
Looks like a python exception is not generated on empty design, instead it just plain dies ...

5. Generating Graphviz representation of design.
ERROR: Nothing there to show.

Expected Behavior

That it doesn't fails fatally.

Environment report

kernel: Linux
kernel_version: 5.10.0-19-cloud-amd64
supported: True
distro: debian
distro_version: 11
python_version: 3.11.9
python_path:
  - /nix/store/7zzjg5xn93b8ayvjkfim1055f8wa9v3d-python3.11-openlane-2.3.8/bin
  - /nix/store/7hnr99nxrd2aw6lghybqdmkckq60j6l9-python3-3.11.9/lib/python311.zip
  - /nix/store/7hnr99nxrd2aw6lghybqdmkckq60j6l9-python3-3.11.9/lib/python3.11
  - /nix/store/7hnr99nxrd2aw6lghybqdmkckq60j6l9-python3-3.11.9/lib/python3.11/lib-dynload
  - /nix/store/7hnr99nxrd2aw6lghybqdmkckq60j6l9-python3-3.11.9/lib/python3.11/site-packages
  - /nix/store/b2fqmmfp6skikqxbjls7744izxsykaqb-python3-3.11.9-env/lib/python3.11/site-packages
  - /nix/store/7zzjg5xn93b8ayvjkfim1055f8wa9v3d-python3.11-openlane-2.3.8/lib/python3.11/site-packages
  - /nix/store/4flhri1nwh8n0d8a4bx2yjnyigpz00bg-python3.11-click-8.1.7/lib/python3.11/site-packages
  - /nix/store/ralzzlb48f9dn7dcd5hlbf80vi3vfpdm-python3.11-cloup-3.0.5/lib/python3.11/site-packages
  - /nix/store/v05ziwqwbfnrgdd7bgqaygj4wj2asfgs-python3.11-pyyaml-6.0.1/lib/python3.11/site-packages
  - /nix/store/d89klpm40xqs0wr4csjfdwzvir3aly43-python3.11-yamlcore-0.0.2/lib/python3.11/site-packages
  - /nix/store/gkfkq6d57dran0fkgz81738zc8wc3w13-python3.11-rich-13.7.1/lib/python3.11/site-packages
  - /nix/store/klj6938h32ra3mlwkavcr285d2387h38-python3.11-markdown-it-py-3.0.0/lib/python3.11/site-packages
  - /nix/store/kalmrzx2fllfk713lm0m1yb1p5rqw1ly-python3.11-mdurl-0.1.2/lib/python3.11/site-packages
  - /nix/store/cid5kxmrjdgikliwbhry3wq6j0117595-python3.11-pygments-2.17.2/lib/python3.11/site-packages
  - /nix/store/nicjg1xpimrn3zfbndwix25gphv88zlx-python3.11-requests-2.31.0/lib/python3.11/site-packages
  - /nix/store/cf9j4x1ka7s6aajgswvw23d36q4d2a2y-python3.11-brotlicffi-1.1.0.0/lib/python3.11/site-packages
  - /nix/store/n4dzhaf8ybxmmk4v47mx00mlllrmg0f0-python3.11-cffi-1.16.0/lib/python3.11/site-packages
  - /nix/store/i65kg4y70qxgw8sb1s35yg1sssc6qxa4-python3.11-pycparser-2.22/lib/python3.11/site-packages
  - /nix/store/qgglxpjjja3qpxi6mayabj417n16d3lh-python3.11-certifi-2024.02.02/lib/python3.11/site-packages
  - /nix/store/jrr6l56xssk4szz6xxk9mxhk8pxwghhg-python3.11-charset-normalizer-3.3.2/lib/python3.11/site-packages
  - /nix/store/y84qvvzrarmks4k7qb9ras6qfsxksnds-python3.11-idna-3.7/lib/python3.11/site-packages
  - /nix/store/2sd6mncv58k6065w8cf9b5pmagf2jc2f-python3.11-urllib3-2.2.1/lib/python3.11/site-packages
  - /nix/store/8xal91yxlsjs1128i5qzn0zs602x6a6d-python3.11-pcpp-1.30/lib/python3.11/site-packages
  - /nix/store/bv15jwy81gldv6iv9mx6rln5xrnvwz84-python3.11-volare/lib/python3.11/site-packages
  - /nix/store/3jpad8nm52qp0c9wa2hjn129jppksc53-python3.11-httpx-0.27.0/lib/python3.11/site-packages
  - /nix/store/zgxhw6fw9imv7csy78d3226zgf0bcv7a-python3.11-anyio-4.3.0/lib/python3.11/site-packages
  - /nix/store/bvvfsk50fxqrh84siy70i48ycmsprak1-python3.11-sniffio-1.3.1/lib/python3.11/site-packages
  - /nix/store/yi418b5lldai2c0adkczs8is60c5d8ns-python3.11-httpcore-1.0.5/lib/python3.11/site-packages
  - /nix/store/61nxkwrszkj7kq8d5fp4ch1q8206nlry-python3.11-h11-0.14.0/lib/python3.11/site-packages
  - /nix/store/462fi500v0yppj7fz5f46dpqg99i3g3z-python3.11-zstandard-0.22.0/lib/python3.11/site-packages
  - /nix/store/kzhc4zn56nhsbxh6bri4db7r2g56pkdq-python3.11-truststore-0.8.0/lib/python3.11/site-packages
  - /nix/store/5wbpm0svz289hyvrhbjws54bd6n55gy1-python3.11-aiohttp-3.9.5/lib/python3.11/site-packages
  - /nix/store/vhmaphzfp7gz0yshamq728f6z312gfx9-python3.11-attrs-23.2.0/lib/python3.11/site-packages
  - /nix/store/6hh90hjln36y3gxvdjdgsjvxzp45ii36-python3.11-multidict-6.0.5/lib/python3.11/site-packages
  - /nix/store/xlkim03yac6jyf93p3s531gq1cwark6y-python3.11-async-timeout-4.0.3/lib/python3.11/site-packages
  - /nix/store/k920s30a5dqzndfj4ic23p7rs0pc927k-python3.11-typing-extensions-4.11.0/lib/python3.11/site-packages
  - /nix/store/hrq35mrgv32iiakb09k2f3pvaic5pyps-python3.11-yarl-1.9.4/lib/python3.11/site-packages
  - /nix/store/vwvxnkxdjqnsy10qb010d6l0yj6rlham-python3.11-frozenlist-1.4.1/lib/python3.11/site-packages
  - /nix/store/1i2x9gv9svw9xdp5zzinnyd4gpjkbw9v-python3.11-aiosignal-1.3.1/lib/python3.11/site-packages
  - /nix/store/fglfx6csv8zpif1pfn95rwwb168lbila-python3.11-aiodns-3.2.0/lib/python3.11/site-packages
  - /nix/store/1y7aypwp6a0pjdkl2favnfqi30vylagv-python3.11-pycares-4.4.0/lib/python3.11/site-packages
  - /nix/store/mj6hbmhs6s4ki6bs8y05mdgnk9brlr89-python3.11-brotli-1.1.0/lib/python3.11/site-packages
  - /nix/store/zsq2bhixjp3y9qzkjkvndhn6n6s7ixx4-python3.11-cryptography-42.0.5/lib/python3.11/site-packages
  - /nix/store/kvslfql2hk3v2h7xnymjwbaq88mnch0c-python3.11-pyopenssl-24.1.0/lib/python3.11/site-packages
  - /nix/store/jwva5ipsh6gm9xfnhdl6y25dc13gq0n5-python3.11-trustme-1.1.0/lib/python3.11/site-packages
  - /nix/store/f89l49aw0ia57dx28h74hzppyjbn5ykn-python3.11-socksio-1.0.0/lib/python3.11/site-packages
  - /nix/store/pv5vvspngggbxqdndyhrs4dhrbr2bwg4-python3.11-tkinter-3.11.9/lib/python3.11/site-packages
  - /nix/store/915v7rm20wlanij3sax1p0kzadqg6cbv-python3.11-lxml-5.1.0/lib/python3.11/site-packages
  - /nix/store/dmdqig719d3i2r9qyl4bz13dl6c5rd7n-python3.11-deprecated-1.2.14/lib/python3.11/site-packages
  - /nix/store/n70y9hzjmlv9g5aj4sg7lnbivkhl3qy5-python3.11-wrapt-1.16.0/lib/python3.11/site-packages
  - /nix/store/frmrhcq8q5vvy63maj21nqjshlnvnl3k-python3.11-libparse/lib/python3.11/site-packages
  - /nix/store/4vd46gwk0iglcwr3rjpbn3yvnq99wshm-python3.11-psutil-5.9.8/lib/python3.11/site-packages
  - /nix/store/31dpq7m9xbmj7gdrbr8i1bn7ymdivi7z-python3-3.11.9-klayout/lib/python3.11/site-packages
  - /nix/store/vmkhknivrpf85h7mlkmhqg7fazcaahdq-python3.11-rapidfuzz-3.9.1/lib/python3.11/site-packages
  - /nix/store/rn939davfw38amn5vyj2rzw26mj8hxjr-python3.11-ioplace_parser/lib/python3.11/site-packages
  - /nix/store/4r88288v854hjn621n8dif282vfiqxvl-python3.11-antlr-python3-runtime-4.9.3/lib/python3.11/site-packages
  - /nix/store/907i1rq6cjjbgjbai49cnwzdk586cf3r-python3.11-semver-3.0.2/lib/python3.11/site-packages
tkinter: True
container_info:
  engine: docker
  version: 27.3.1
  conmon: False
  rootless: False
nix_info:
  version_string: nix (Nix) 2.24.5
  channels:
  nix_command: True
  flakes: True

Reproduction material

openlane.steps create-reproducible didn't work :/

Relevant log output

5. Generating Graphviz representation of design.
ERROR: Nothing there to show.