niri: "config.kdl".path is not a nix store path

[kraftnix]

This may just be a problem with the docs which specify that config."config.kdl".path can be added to your path.

The path is generated from constructFiles.generatedConfig.path, but that provides a strange path not in the nix store /<hash/niri-config.kdl but a usable path is at constructFiles.generatedConfig.outPath.

i.e. to use the kdl file I used to use

# home-manager
xdg.configFile."niri/config.kdl".source = config.wrappers.niri."config.kdl".path;

but this causes an eval error in a flake for trying to use a path outside of the store, so now I use:

xdg.configFile."niri/config.kdl".source = config.wrappers.niri.constructFiles.generatedConfig.outPath;

which works fine.

Is this a documentation issue or user error?

[BirdeeHub]

This is a documentation issue for an issue which is hard to describe and/or user error. Kinda both.

config.wrappers.niri."config.kdl".path

^ the path at that location is a placeholder path.

It is a placeholder path because it is a file that we will be creating in the final wrapper derivation.

It will refer to the named output in whatever derivation it ends up in.

This is a large part of why we use constructFiles for these things, because it allows us to use placeholders inside our options, while also making the final path available to grab from outside of the derivation being built. Otherwise, we would have to "${config.wrappers.niri.wrapper}/wherever/it/is/located" rather than "${config.wrappers.niri.constructFiles.generatedConfig}" or config.wrappers.niri.constructFiles.generatedConfig.outPath

However I would question why you are trying to copy this path to ~/.config/niri

The wrapper should be providing it directly to niri, correct?

Is there a specific goal you are trying to achieve?