Make rebuilds without code changes take less time#1086
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toshok
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Jan 22, 2024
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shouldn't normal ninja deps ensure this already?
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I'm not sure, I don't remember adding this part 😬
jazzdan
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Jan 22, 2024
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I'm not sure, I don't remember adding this part 😬
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Nice! |
…them if they've changed. drops local mac arm build (on no local change, with no driver change) from 45s to 15s
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build.jsis unconditionally writing/touching source files, which results in some unnecessary recompilation locally. instead let's compare old/new contents and only write if we need to/touch if things have changed.Drops the rebuild time (with no code changes) from ~45s to ~15s on my m2 mbp.
probably something best done via buck longer term, but this felt like a pretty easy change.