> when does GPL stop being infectious?

Either a) when the license has an explicit exemption (such as at glibc or the kernel's userspace interfaces) or b) when something ceases to be a "derivative work" in copyright terms (which is ultimately a legal question for lawyers).

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surajrmal 4 days ago | parent [-]

Or existing on the other end of ipc.

	▲	lmm 3 days ago \| parent [-]
		No. The FSF takes the position that a program that is deeply entangled with another is a derivative work and can be subject to the GPL, even if that deep entanglement takes place over IPC.