There are two problems with rapidyaml:

1. While installing this package with pip install git+https://github.com/symbiflow/python-fpga-interchange.git, there is an error that rapidyaml can't be found which is true since it's in the setup.py in install_requires but it's not a PIP package.
2. I'd simply solve it by adding git+https://github.com/litghost/rapidyaml.git@fixup_python_packaging#egg=rapidyaml&subdirectory=api/python before this package in https://github.com/SymbiFlow/fpga-tool-perf/blob/0888f31ca8855141a7648189167cacc2a6749755/conf/nextpnr/requirements.txt#L4 which should solve the problem of the unavailable rapidyaml package, BUT there's an error during its installation. It requires swig to be installed in the environment and adding swig to the Conda's environment.yml doesn't work. I guess it'd be needed to add it in the host OS or which doesn't seem to be the optimal solution.

For now I'll propose to simply lock revision in fpga-tool-perf's nextpnr/requirements.txt and symbiflow/requirements.txt to the last revision prior to using rapidyaml, i.e. e632a5e

BTW. @litghost I'd add the second point as an issue in https://github.com/litghost/rapidyaml/ but there's no Issues tab enabled.