I would like to typeset some listings in Libertine/Libertinus Mono, but I've set the listings package to typeset the (octave/spice) language keywords in boldface, and these fonts (otherwise excellent, by the way) lack a Mono Bold face.
My question is: Is there any way to "fake" a bold version of Libertine/Libertinus Mono? I am thinking, for instance, on picking the Regular Bold types and printing them equally spaced, but perhaps this is too crude and won't work. Also, I don't know how to do that.
If it's too difficult, no problem: I can use DejaVu Mono or other monospaced font. I was being curious, simply.