fix #753, use try import rather than importlib to test module presence. #755
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petersilva
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tysonkaufmann
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Sep 11, 2023
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Formerly used importlib, but that only tested if the module itself was installed. As per #753, It turns out that import can fail because of transitive deps: a package is installed, but something that it depends on is missing, so it's clearer to just try an import surrounded by try/except.