Added extra context in the nested string interpolation example

[ellyxir]

the string + operator was not previously introduced and it wasn't clear that you can have more than just a variable within ${}
im doing a video series for learning the nix programming language and when i saw this part of the language tutorial, i had a hard time parsing what i was seeing. perhaps this could make it more clear. thank you!

[fricklerhandwerk]

Yeah the tutorial is deliberately not going into depth about operators, because they're largely unsurprising -- except of course for string/path concatenation.

Thanks for pointing it out.

Instead of prefixing the note,
I suggest moving it into a collapsible "detailed explanation" block like it's done elsewhere, and link to the right place in the Nix manual for details on that particular operator.

Could you please do that? If not, I'll keep a reminder to finish it up.

[ellyxir]

Yes I'd be happy to but won't get to it until Monday. Hope that's ok!

[ellyxir]

I've moved it to a detailed explanation block and added a little more detail. Also linked to manual and the functional libraries section because standard operators and functions are mentioned there. Let me know if this is ok. Thank you!

[fricklerhandwerk]

Thanks a lot @ellyxir. This prompted me to fix a small discoverability issue in the Nix manual.

I expanded a bit on the explanation.