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Home Manager Modules
This note covers 18-home-manager-module/, which defines a small reusable Home Manager module in module.nix and verifies it by evaluating a throwaway Home Manager configuration.
1. What This Example Mirrors
This example is the Home Manager counterpart to 04-nixos-module/.
It has the same shape:
- one option namespace,
- one configuration effect, and
- one check that evaluates a temporary configuration.
The important difference is the target system. Home Manager modules work on home.* options rather than services.*, environment.*, or other NixOS module options.
2. Why the Check Reads a Config Value
The flake does not need to switch a real Home Manager configuration. It only needs to prove that the module evaluates and contributes the expected value.
That is why the check reads:
testConfig.config.home.file."welcome.txt".text
instead of trying to activate a real profile.
3. Commands to Try
cd 18-home-manager-module
nix flake show
nix flake check