Consider adding a license and/or CLA about napkin

[vEnhance]

Thanks for your input!

Based on what you wrote, my inclination is to just license the book under GPL. I'm happy to omit a CLA on the basis that, I actually think if someone makes a meaningful contribution to Napkin, e.g. writing a chapter for me, they should be allowed to keep the rights to that chapter.

Anyway, as far as I know, no one has (yet) made a meaningful (copyright-wise --- I do appreciate the typos!) contribution to the book itself --- the thing that comes closest might be #17 where @aDotInTheVoid had helped me set up Travis CI. I'll check if he has any objections to having the .travis.yml thrown in with the GPL and then go forward with that.

[vEnhance]

Why not license text under CC By-SA and GPL only for tex code?

Thanks for the suggestion. That sounds like a good idea, I'll probably follow this advice. (Once I finally finishing getting rid of diagrams.sty, anyways --- but that's a long ways off.)

[vEnhance]

With diagrams.sty finally removed, the license is up now: https://github.com/vEnhance/napkin/blob/main/LICENSE.mkd

Thanks everyone for the advice.

[aDotInTheVoid]

No objections, happy for you to do it under any GPL

[aDotInTheVoid]

You'll probably also want to mension that diagrams.sty isn't gpl

[vEnhance]

Agh, right. I've been honestly meaning to eliminate altogether diagrams.sty and use tikz-cd everywhere instead because diagrams.sty causes issues in quite a few ways (closed source, has time bomb, etc.).

I guess it's finally time.

[mikepierce]

@vEnhance Are you going to take care of the diagrams.sty to tikz-cd conversion yourself, or make it an issue for someone else to tackle? ;) How many diagrams are there?

[vEnhance]

Seems to be about 70 diagrams left. I did a bunch last week, and then promptly punted it to June on my to-do list because it was such a chore :)

If anyone here wants to convert any number of diagrams for me, please be my guest! Just file a pull request and reference this issue. I probably won't get to converting more until mid-June at earliest.

[YodaEmbedding]

I won't mind doing some diagram conversions after this semester ends (mid-December). I wanted some more practice with these anyways. :P

[************]

Why not license text under CC By-SA and GPL only for tex code?

CC By-SA is generally more suited for content, and GPL for code.

E.g. if GPL is used I think someone could legally fork your text and serve it on their blog with non GPL modifications because the GPL talks specifically about "distributing binaries", which is not what websites do.

And CC By-SA would be compatible with Wikipedia and Stack Exchange, which is a huge plus on both ways.