Figure out if pypy3 is really needed for nextpnr-xilinx repo

SymbiFlow / conda-packages

Conda build recipes for the toolchains needed by LiteX / MiSoC firmware

https://github.com/mithro/HDMI2USB-litex-firmware

Apache License 2.0

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Figure out if pypy3 is really needed for nextpnr-xilinx repo #90

Open mithro opened 4 years ago

mithro commented 4 years ago

The dependency on pypy3.6 worries me a little. Let's merge and log an issue to follow up on that.

Originally posted by @mithro in https://github.com/SymbiFlow/conda-packages/pull/89

mithro commented 4 years ago

FYI - @acomodi

acomodi commented 4 years ago

I think it might work without pypy, but it would require much more time to compile the data files (nextpnr instructions). Also cpython should be an option.

daveshah1 commented 4 years ago

PyPy3 is not needed but there was a very significant difference in database build runtime (something like 5x iirc) so it is strongly recommended. I have a speedup planned in the future that will make it less needed.