Lets take a step back here... I don't really care about the kernel use case, but more whether this could be more generally used. Here are other examples I came up with. Font caches: A package could drop a config file in /etc/font/conf.d/ to add another directory that is to be used when building font caches. They would also want to add a .trigger file for the hook. OK... I just came up with one other example! But I did not look too hard at what hooks on my system actually do. Back to the question of whether we support this. A quick skim of the patch shows me it is quite long, but relatively simple. (it seems to be doing more than just adding .trigger support - also adding drop in directories - and this seems two patches to me...) So, I am leaning in the direction of this being a useful addition. Further discussion of the usefulness should not focus around the kernel approach, but rather the general idea of the feature. Allan