Depending on how things are linked it might be simpler than you imagine and not involve any kernel modifications, you can do a lot of cool and/or horrifying stu

Depending on how things are linked it might be simpler than you imagine and not involve any kernel modifications, you can do a lot of cool and/or horrifying stuff with a few environment variables: https://unix.stackexchange.com/questions/24811/changing-linked-library-for-a-given-executable-centos-6 https://unix.stackexchange.com/questions/24811/changing-link... If anything this would discourage more programs from adopting the xdg spec though.