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What do you mean by "incrementally compile"? an addition of a single line of code results in a 60s build? never experienced anything like that, only the first compile is slow for me.

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Incremental compilation results are subjective. If you just changed the file with "main" in it and there was nothing else in there, I'd expect it to be faster than changing a file at the bottom of the dependency tree as you then have to recompile a lot more.

Perhaps they're changing some fundamentals of the codebase and (unsurprisingly) the compiler seems slower than you might expect.

Yes, unfortunately, most of my work is on low-level shared libraries and it often wants to rebuild everything.

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