This is a simple approach to managing your configuration.
No magic. No Home Manager. No direnv.
nix profile install .#noMagic
Now you have GNU Stow, Helix and Jujutsu available in your PATH.
This tool is a symlink farm. Here's how to use it with this repo.
stow --dotfiles --target "$HOME" helix
stow --dotfiles --target "$HOME" jj-vcs
Now your configuration is symlinked to ~/.config/helix/config.toml and ~/.config/jj/config.toml.