Created attachment 561184 [details] my emerge info Per https://docs.python.org/3/howto/instrumentation.html, you can gain some very powerful python tracing tools by enabling the '--with-dtrace' option when building python. I have tested this with 'EXTRA_ECONF="--with-dtrace"' after installing dev-util/systemtap, and the USDT probes are enabled as expected. Would it be possible to add a use flag to python to enable this for me? I would be happy to contribute this if I get a little bit of guidance on naming/style.