lomiri: env is not entirely passed to apps

Describe your issue

The entire environment is not passed to applications. This is most notably seen through the missing $HOME variable, causing apps to attempt to run with / as the home.

I am unsure if this is related, but it seems that sudo also does not get passed environment variables, but sudo -i still works.

(See https://gitlab.com/ubports/development/core/lomiri-app-launch/-/issues/18)

What's the expected behaviour?

Opening an app gives it the user's $PATH.

What's the current behaviour?

Opening an app gives it only partial portions of the user's $PATH

How to reproduce your issue?

Open any application. This is best seen through terminals, which cannot find a shell.

What device are you using?

motorola-harpia (But this should affect all devices.)

On what postmarketOS version did you encounter the issue?

• edge (feature/lomiri branch)

• v23.12

• v23.06

• I confirm that the issue still is present after running sudo apk upgrade -a

On what environment did you encounter the issue?

Environments

• GNOME Shell on Mobile
• Phosh
• Plasma Mobile
• Sxmo (Wayland/Sway) Please post the output of sxmo_version.sh
• Other: Lomiri

How did you get postmarketOS image?

• from https://images.postmarketos.org
• I built it using pmbootstrap
• It was preinstalled on my device

Additional information

This is most likely an issue with lomiri-app-launch's POSIX implementation not being as complex as the systemd implementation.

This also causes morph-browser to crash on startup with Failed to create profile directory,unable to ensure a single instance of the application.