[Low priority, but I keep forgetting about it.]

Guix,

What the subject says.  The Linux command line isn't bash.

Use, e.g., ‘root=’ instead of the Guix-specific and unintuitive 
‘--root=’.  It's surrounded by normal ‘nomodeset’ & ‘quiet’ 
arguments anyway.

For things like ‘--repl’ we might substitute ‘rd.repl’, or 
‘rd.rescue’ which has the advantage of being used by systemd 
[users] as well.

Kind regards,

T G-R