NixOS Module System - Public Room Timeline

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Sender	Message	Time
17 Apr 2024
ibizaman	Aaah yes. Got it. I agree I missed something to do that a few times. My only way is like you said, to use the module somewhere else and run nix build on it or something	14:34:04
ibizaman	* Aaah yes. Got it. I agree. I missed something to do that a few times. My only way is like you said, to use the module somewhere else and run nix build on it or something	14:34:28
	JoelMcCracken joined the room.	16:28:10
djacu	In reply to @nbp:mozilla.org djacu: That might be one of the most in-depth module presentation I've seen which does not present `mkIf`. hah thanks! If I had more time, `mkIf` would have probably been the next topic. Also link to all the lessons if you want to share -> https://nixos-modules.nix.みんな/	19:40:02
18 Apr 2024
nbp	I guess, I might be completely biais into introducing `mkIf` early, as it feels like a must have for implementing modules in NixOS, but I think your plan might actually make more sense from a user point of view and might be better to target non-developer, who might appreciate the lack of conditional.	00:44:32
nbp	* I guess, I might be completely biais into introducing `mkIf` early, as it feels like a must have for implementing modules in NixOS. On the other hand I think your plan might actually make more sense from a user point of view and might be better to target non-developer, who might appreciate the lack of conditional.	00:45:09
djacu	In reply to @nbp:mozilla.org I guess, I might be completely biais into introducing `mkIf` early, as it feels like a must have for implementing modules in NixOS. On the other hand I think your plan might actually make more sense from a user point of view and might be better to target non-developer, who might appreciate the lack of conditional. I'd say everything I have in the "Getting Started" section must come first as it lays the foundation for how a module can be created. Anything after that is fair game. Does documentation need to come so early? Nah but it's a quick one and a good thing to reinforce that people should document their modules well. I had the types section in there because I wanted to get to submodules as it is the most ubiquitous and a very powerful type. `mkIf` could probably go next; it was in the Future section. I was putting lessons there that I wanted to talk about soon.	02:05:29
djacu	The only issue I see with introducing `mkIf` early is that there needs to be a sufficient foundation so that you don't introduce anything extra. All the lessons are in an order such that only 1 or 2 new things are introduced. My hope is that this keeps the reader focused on what is currently trying to be taught and they don't have to juggle any extra information in their head.	02:07:23
19 Apr 2024
hexa	infinisil: https://github.com/NixOS/nixpkgs/pull/305334#issuecomment-2067069655 can you answer this?	18:44:37
infinisil	In reply to @hexa:lossy.network infinisil: https://github.com/NixOS/nixpkgs/pull/305334#issuecomment-2067069655 can you answer this? ☑️	18:50:31
hexa	thansk!	18:50:36
hexa	* thanks!	18:50:41
22 Apr 2024
djacu	Is there a way I can circumvent the `The option <option> is used but not defined` error? I am playing around with a silly idea of nix modules to html. You can see the code for the `<a>` tag module here: https://github.com/djacu/nix2html/blob/main/a.nix Two attributes I've implemented so far are `download` and `href`. If you run the `run.sh` script, you get an output that should look like this `"<a download=new-filename href=#top></a>"`. But I don't want a user to have to set the `download` or `href` attributes every time. Trying to think of a good solution but coming up empty. Any ideas?	06:19:34
Migrated to @infinidoge:inx.moe	You probably want either the anything option type, or to define your own types	08:29:40
nbp	Why using submodules if you have only a single instance of each attribute?	10:28:26
nbp	You can declare options to be unused: https://github.com/NixOS/nixpkgs/blob/8e54038847aa80ee2b1ffa9e313b0ab918f1903c/lib/options.nix#L228-L244 But I do not think this answer your problem. One example of usage of it is from this PR: https://github.com/NixOS/nixpkgs/pull/152785/files	10:36:38
nbp	Maybe you can use the type `nullOr` and have a default value of `null`.	10:37:54
nbp	`mkDefault` should be delayed, like `mkIf`, so `mapAttrs (name: mkDefault)` should be replaceable by `mkDefault`. https://github.com/NixOS/nixpkgs/blob/master/lib/modules.nix#L882	12:24:56

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