It is not necessary to install Home Manager as it is the default package of this flake. Running nix run . -- will execute Home Manager, and all arguments following -- will be passed to it. Home Manager provides a --flake option that allows you to select an attribute to be used as the configuration. The . refers to the first attribute in packages.homeConfigurations.

• build configuration: nix run . -- build --flake .
• switch to configuration: nix run . -- switch --flake .
• use $SHELL instead of bash: nix develop -c $SHELL

• https://home-manager-options.extranix.com
• https://nixos.wiki/wiki/Zsh#Zplug
• https://github.com/adobe-fonts/source-code-prow

• https://www.chrisportela.com/posts/home-manager-flake/
• https://github.com/jonringer/nixpkgs-config/tree/master

• https://github.com/mitchellh/nixos-config