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Illumos has some incredible technology packed into it but lots of those have been ported, re-implemented, or turned into billion dollar companies. The extra special parts like being able to debug v8 in mdb have this strange alignment issue: How many node developers are going to fire up an alternative operating system and learn a new debugger to be able to find a memory leak?

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> How many node developers are going to fire up an alternative operating system and learn a new debugger to be able to find a memory leak?

I don't think this is much of a barrier, especially when "fire up" means: run a VM instance. Using various VMs and/or containers for development is already a common workflow.

I think the unfamiliarity of Illumos for most developers would be more of a barrier.

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