How to install linux-headers package for Linux kernel 4.15.0-2 in Debian

Question

This will no doubt be an easy question for anyone who knows anything about Debian and Linux, but that apparently doesn't include me...

I need the header files for my kernel, namely 4.15.0-2-686-pae. But I can't find them anywhere in Debian's package repository. The only package resembling this is a "common" package in sid and that does not include all the headers.

Where can I find the headers for this kernel, and why does it seem like they aren't in the repository?

I should add that the kernel was installed from the testing repository originally.

Answer 1

Outdated software gets archived from the repos, but there's a copy of the headers you're looking for here at the Debian snapshot archive.

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Please use caution when running outdated software.