Bug#1121644: luanti-server: Add support for /usr/local/ for user provided content

[Simon McVittie]

On Sun, 01 Feb 2026 at 12:20:11 +0100, Tobias Frost wrote:
>According to the Filesystem Hierarchy Standard and Debian Policy,
>/usr/local is reserved exclusively for software and data installed by
>the local administrator and must remain outside the scope of Debian
>packages.

I'm with you so far.

>While Debian packages must not install files into /usr/local,
>they also should not define /usr/local as part of their intended runtime
>behaviour or interface.

I don't think that *necessarily* follows? /usr/local/bin is on the PATH by 
default, python3.13 looks for locally-installed Python code in 
/usr/local/lib/python3.13/dist-packages, every freedesktop.org 
specification that involves XDG_DATA_DIRS will look in locations like 
/usr/local/share/applications, and so on...

     smcv