make niri-session POSIX compatible

[z-erica]

&> redirection is undefined in POSIX sh (should fix #969)

[YaLTeR]

As I mentioned in the issue, please leave /bin/sh and change the &> instead. It's supposed to be POSIX compatible

[z-erica]

sure thing! i also changed the bash invocation early on, since that was what made me assume it was intended to be a bash script

[YaLTeR]

sure thing! i also changed the bash invocation early on, since that was what made me assume it was intended to be a bash script

Hmm, so this is a good question. Looks like the -l argument to exec is also bash-specific:

If the -l option is supplied, the shell places a dash at the beginning of the zeroth argument passed to command. This is what login(1) does.

$ dash
$ exec -l bash -c 'echo $0'
dash: 1: exec: -l: not found

So maybe it's better to leave exec bash on that line?

cc @kchibisov, but I think this invocation was cargo culted from other similar scripts

[kchibisov]

The script pretty much does what the gnome shell wrapper does for the same thing, and was written the same way. There's generally no way to easy set the zero argument unless you use bash/zsh/etc.

You may try to pass the -l to shell directly though, if the goal is to use sh.

[YaLTeR]

Let's just leave exec bash then for now

[YaLTeR]

Thanks