How did I miss this thread? I was wondering how to run that game a while ago.
I figured last night that the game also runs with steam-run (I learned about that on this forum this week).
Thanks for the derivation 
I’m trying it but I get:
$ ./result/bin/starsector
mkdir: cannot create directory '/starsector': Permission denied
Is it normal that I need to create that directory? Shouldn’t it uses one in $HOME?
Also when I alt-tab to get back on my desktop, I still have the game cursor and I can’t click anything (I have the same problem with steam-run). I wonder if this happens with most games and if we can do anything about it.