build: avoid rebuilds when using clippy in a virtualenv#1557
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(Ah sorry just seen your other comment, I'll restore |
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If nobody has any objections, I'll probably merge this later today. I think it's a useful tidy up that can avoid some user frustration. |
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Closes #1551
The fix comes in two pieces:
VIRTUAL_ENVandCONDA_PREFIXvariables as possible ways to detect the Python interpreter; this logic is borrowed frommaturin.rerun-if-env-changedsystem to ensure we emit exactly the environment variables checked by the current run of the build script. This should avoid issues like Rerun if PYO3_CROSS env variable changes. #1552 .cc @jameshilliard I took out the (new, undocumented)PYO3_CROSSvariable - was there a specific need for its creation?