Add abstraction for the default /tmp/lima directory ?

[afbjorklund]

Description

It doesn't work so great in a multi-user environment, and doesn't work on Windows (compared with e.g. C:\TEMP)

i.e. when several users are sharing a server, they will see the files from the other users in the shared /tmp/lima

Hosts based on Fedora put /tmp in RAM, so you need to use /var/tmp if you want to use a normal disk directory.

Should we have some placeholder value for the default.yaml, instead of the "/tmp/lima"? Similar to LIMA_HOME.

• Convert limayaml functions to use pointer #2337 (comment)

[afbjorklund]

One possible solution is that "/tmp/lima" is the placeholder, and replace it with $TMPDIR/lima.

i.e. something like filepath.Join(os.TempDir(), "lima"), so that it works also on Windows

---

systemd would try to use some complex scheme:

https://systemd.io/TEMPORARY_DIRECTORIES/

But it should be optional (opt-in), since it breaks things.

https://0pointer.de/blog/projects/tmp.html re: /tmp