nix-config/README.md

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# My NixOS configurations

Here's my NixOS/home-manager config files. Requires [Nix flakes](https://nixos.wiki/wiki/Flakes).

## Structure

- `flake.nix`: Entrypoint for hosts and home configurations. Also exposes a
  devshell for boostrapping (`nix develop` or `nix-shell`).
- `lib`: A few lib functions for making my flake cleaner
- `hosts`: NixOS Configurations, accessible via `nixos-rebuild --flake`.
  - `common`: Shared configurations consumed by the machine-specific ones.
    - `global`: Configurations that are globally applied to all my machines.
    - `optional`: Opt-in configurations my machines can use.
  - `floki`: Lenovo ThinkPad X1 Carbon Extreme Gen 5
- `home`: My Home-manager configuration, acessible via `home-manager --flake`
    - Each directory here is a "feature" each hm configuration can toggle, thus
      customizing my setup for each machine (be it a server, desktop, laptop,
      anything really).
- `modules`: A few actual modules (with options) I haven't upstreamed yet.
- `overlay`: Patches and version overrides for some packages. Accessible via
  `nix build`.
- `pkgs`: My custom packages. Also accessible via `nix build`. You can compose
  these into your own configuration by using my flake's overlay, or consume them through NUR.
- `templates`: A couple project templates for different languages. Accessible
  via `nix init`.


## About the installation

Home-manager is used in a standalone way, and because of opt-in persistence is
activated on every boot with `loginShellInit`.


## How to bootstrap

All you need is nix (any version). Run:
```
nix-shell
```

If you already have nix 2.4+, git, and have already enabled `flakes` and
`nix-command`, you can also use the non-legacy command:
```
nix develop
```

`nixos-rebuild --flake .` To build system configurations

`home-manager --flake .` To build user configurations

`nix build` (or shell or run) To build and use packages

`sops` To manage secrets, example:

```
export GPG_TTY=$(tty)
gpgconf --reload gpg-agent
EDITOR=vi sops --config .sops.yaml nixos/_mixins/secrets.yaml
```


## Secrets

For deployment secrets (such as user passwords and server service secrets), I'm
using the awesome [`sops-nix`](https://github.com/Mic92/sops-nix). All secrets
are encrypted with my personal PGP key (stored on a YubiKey), as well as the
relevant systems's SSH host keys.

On my desktop and laptop, I use `pass` for managing passwords, which are
encrypted using (you bet) my PGP key. This same key is also used for mail
signing, as well as for SSH'ing around.

## Tooling and applications I use

Most relevant user apps daily drivers:

- emacs
- fish
- kitty
- qutebrowser
- neomutt + mbsync
- khal + khard + todoman + vdirsyncer
- gpg + pass
- tailscale
- podman
- zathura
- wofi
- bat + fd + rg
- kdeconnect
- sublime-music

Some of the services I host:

- hydra
- navidrome
- deluge
- prometheus
- websites (such as https://burd.me ...)
- headscale

Nixy stuff:

- nix-colors
- sops-nix
- impermanence
- home-manager
- deploy-rs
- and NixOS and nix itself, of course :)

Let me know if you have any questions about them :)