refactor: moved secure boot and disko

.gitattributes

@@ -0,0 +1 @@
+hosts/lithium/semi-secret-vars.nix filter=git-agecrypt diff=git-agecrypt

.sops.yaml

@@ -0,0 +1,13 @@
+keys:
+  - &admin_jay age1mv8xtvkuuw3hphq5ytaekz7p8a4kht79uajyhy534uy9e5472fhqj5zpxu
+  - &server_lithium age148yre4vaxp6lm59rft24te46szawqyguf8znkrtpq7ud8tpteauqxkwyjl 
+creation_rules:
+  - path_regex: secrets/[^/]+\.(yaml|json|env|ini)$
+    key_groups:
+      - age:
+        - *admin_jay
+        - *server_lithium
+  - path_regex: secrets/lithium/[^/]+\.(yaml|json|env|ini)$
+    key_groups:
+      - age:
+        - *server_lithium

README.md

@@ -0,0 +1,120 @@
+# nixos-config
+
+> Declarative, reproducible configuration for all my NixOS systems
+> Covers workstation/gaming, laptop, and homelab/server use cases.
+
+## Overview
+
+This repository maanges **multiple NixOS systems** using a shared modular configuration.
+It's designed to be **secure, composable, and automated** using modern Nix tooling.
+
+- **Laptop ("neon")**: Portable KVM/Swiss-Army Knife
+- **Homelab Server ("lithium")**: Identity, Backups, Forgejo, Jellyfin
+- **Workstation / Gaming ("titanium")**: Dev and Gaming /w Steam/Proton
+- Secrets managed via `sops-nix`
+- Deployable with `nixos-rebuild` (and soon `deploy-rs` or `nixos-anywhere`)
+
+
+```mermaid
+---
+title: How it all fits together
+---
+graph TD
+    subgraph Entrypoint
+        flake
+        mkSystem
+    end
+    subgraph System Configuration
+        hosts
+        hosts_conf
+        hosts_hardware
+    end
+    subgraph User Configuration
+        users_default
+        users_home
+    end
+    subgraph Shared Modules
+      nixos_mods
+      home_mods
+    end
+    flake["flake.nix"] --> mkSystem["lib/mkSystem"]
+    
+    mkSystem --> hosts["hosts/{hostname}/default.nix"]
+    mkSystem --> users_default["users/{username}/default.nix"]
+    mkSystem -.->|if file exists| users_home["users/{username}/home.nix"]
+    
+    hosts --> nixos_mods@{ shape: docs, label: "modules/nixos/*"}
+    hosts --> hosts_conf["configuration.nix"]
+    hosts --> hosts_hardware["hardware.nix"]
+    
+    users_home --> home_mods@{ shape: docs, label: "modules/home/*"}
+```
+
+## How to use this? (Deployment)
+
+With [home-manager](https://github.com/nix-community/home-manager) included as
+an input to the flake, and pulled into the hosts along with their users, this
+will automatically apply updates to both the system and user environments.
+
+
+```bash
+# This will show what the flake has to offer.
+nix flake show
+
+# Build a VM to test config
+nixos-rebuild build-vm --flake .#hostname
+
+# Preview and apply changes on a nixOS system
+nixos-rebuild dry-run --flake .#hostname
+sudo nixos-rebuild switch --flake .#hostname
+
+# Preview and apply changes on a macOS system
+darwin-rebuild dry-run --flake .#hostname
+darwin-rebuild switch --flake .#hostname
+
+# Generate an Install ISO
+nix build .#nixosConfigurations.installIso.config.system.build.images.iso
+
+# Verify the ISO contents
+sudo mount -o loop result/iso/nixos-*.iso mnt
+ls mnt
+umount mnt
+```
+
+## Design Goals
+
+- **Reproducibility**: All systems can be rebuilt from this repo
+- **Modularity**: Every services is a reusable module
+- **Security**: Minimal trust, secrets managed explicitly
+- **Composability**: Roles + services enable rapid provisioning
+
+## Directory Layout / Organization
+
+```
+├── flake.nix  # sets inputs, imports lib functions, wires hosts and users
+├── lib        # functions to build flake outputs
+├── hosts
+│   ├── <hostname>
+│   │   ├── configuration.nix  # imports from ../../modules/nixos
+│   │   ├── hardware.nix       # host specific hardware configuration
+│   │   └── default.nix        # entrypoint for host configuration
+├── users
+│   ├── <username>
+│   │   ├── default.nix  # entrypoint for user configuration
+│   │   └── home.nix     # imports from ../../modules/home/
+├── modules    # Reusable NixOS and Home-Manager Modules
+│   ├── nixos  # host configuration modules
+│   └── home   # home-manager modules
+├── overlays   # Custom Nixpkgs overlays that modify existing pacakges.
+└── pkgs       # Custom Nix packages (not in nixpkgs)
+
+```
+
+## References
+
+- [@shazow](https://github.com/shazow/) and https://github.com/shazow/nixfiles/
+- [@ryan4yin] and the contributors and co-authors of [nixos-and-flakes-book](https://nixos-and-flakes.thiscute.world/)
+- [@Mic92] for https://github.com/Mic92/sops-nix and https://blog.thalheim.io/
+- Various GitHub Projects found with searches [similar to this](https://github.com/search?q=language%3ANix+sops-nix.nixosModules.sops&type=code)
+- https://nix.dev/ and https://search.nixos.org/
+- https://edolstra.github.io/pubs/phd-thesis.pdf

configuration.nix

@@ -1,156 +0,0 @@
-# Edit this configuration file to define what should be installed on
-# your system.  Help is available in the configuration.nix(5) man page
-# and in the NixOS manual (accessible by running ‘nixos-help’).
-
-{ config, pkgs, nixos-hardware, ... }:
-
-{
-  imports =
-    [ # Include the results of the hardware scan.
-      #nixos-hardware.nixosModules.gpd-pocket-3
-      ./hardware-configuration.nix
-    ];
-
-  # Bootloader.
-  boot.loader.systemd-boot.enable = true;
-  boot.loader.efi.canTouchEfiVariables = true;
-
-  networking.hostName = "neon"; # Define your hostname.
-  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
-
-  # Enable networking
-  networking.networkmanager.enable = true;
-
-  # Set your time zone.
-  time.timeZone = "America/Chicago";
-
-  # Select internationalisation properties.
-  i18n.defaultLocale = "en_US.UTF-8";
-
-  i18n.extraLocaleSettings = {
-    LC_ADDRESS = "en_US.UTF-8";
-    LC_IDENTIFICATION = "en_US.UTF-8";
-    LC_MEASUREMENT = "en_US.UTF-8";
-    LC_MONETARY = "en_US.UTF-8";
-    LC_NAME = "en_US.UTF-8";
-    LC_NUMERIC = "en_US.UTF-8";
-    LC_PAPER = "en_US.UTF-8";
-    LC_TELEPHONE = "en_US.UTF-8";
-    LC_TIME = "en_US.UTF-8";
-  };
-
-  # Enable the X11 windowing system.
-  services.xserver.enable = true;
-
-  # Enable the GNOME Desktop Environment.
-  services.xserver.displayManager.gdm.enable = true;
-  services.xserver.desktopManager.gnome.enable = true;
-
-  # Configure keymap in X11
-  services.xserver.xkb.layout = "us";
-
-  # Enable CUPS to print documents.
-  # services.printing.enable = true;
-
-  # Enable sound with pipewire.
-  # sound.enable = true;
-  hardware.pulseaudio.enable = false;
-  security.rtkit.enable = true;
-  services.pipewire = {
-    enable = true;
-    alsa.enable = true;
-    alsa.support32Bit = true;
-    pulse.enable = true;
-    # If you want to use JACK applications, uncomment this
-    #jack.enable = true;
-
-    # use the example session manager (no others are packaged yet so this is enabled by default,
-    # no need to redefine it in your config for now)
-    #media-session.enable = true;
-  };
-
-  # Enable touchpad support (enabled default in most desktopManager).
-  # services.xserver.libinput.enable = true;
-
-  # Define a user account. Don't forget to set a password with ‘passwd’.
-  users.users.jml = {
-    isNormalUser = true;
-    description = "Jay Looney";
-    extraGroups = [ "networkmanager" "wheel" ];
-    packages = with pkgs; [
-      firefox
-    ];
-  };
-
-  # Enable automatic login for the user.
-  services.displayManager.autoLogin.enable = true;
-  services.displayManager.autoLogin.user = "jml";
-
-  # Workaround for GNOME autologin: https://github.com/NixOS/nixpkgs/issues/103746#issuecomment-945091229
-  systemd.services."getty@tty1".enable = false;
-  systemd.services."autovt@tty1".enable = false;
-
-  # Allow unfree packages
-  nixpkgs.config.allowUnfree = true;
-  
-  nix.settings = {
-    experimental-features = [ "nix-command" "flakes" ];
-  #  substituters = ["https://hyprland.cachix.org"];
-  #  trusted-public-keys = ["hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="];
-  };
-
-  # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
-  environment.systemPackages = with pkgs; [
-    home-manager
-    neovim
-    git
-    yubikey-personalization
-    kitty # hyprland default term
-    swww # wallpaper
-    xdg-desktop-portal-gtk
-    xdg-desktop-portal-hyprland
-    xwayland
-  ];
-
-  services.udev.packages = with pkgs; [
-  ];
-
-  programs.neovim.enable = true;
-  programs.neovim.defaultEditor = true;
-  environment.variables = {
-    EDITOR = "nvim";
-    VISUAL = "nvim";
-  };
-
-  # Some programs need SUID wrappers, can be configured further or are
-  # started in user sessions.
-  programs.hyprland = {
-    enable = true;
-    # following along with stackademic installing nixos with hyprland
-    xwayland.enable = true;
-    #xwayland.hidpi = true;
-  };
-  # Hint electron apps to use wayland
-  environment.sessionVariables = {
-    NIXOS_OZONE_WL = "1";
-  };
-  # screen sharing /w hyp 
-  services.dbus.enable = true;
-
-  # Enable the OpenSSH daemon.
-  services.openssh.enable = true;
-
-  # Open ports in the firewall.
-  # networking.firewall.allowedTCPPorts = [ ... ];
-  # networking.firewall.allowedUDPPorts = [ ... ];
-  # Or disable the firewall altogether.
-  # networking.firewall.enable = false;
-
-  # This value determines the NixOS release from which the default
-  # settings for stateful data, like file locations and database versions
-  # on your system were taken. It‘s perfectly fine and recommended to leave
-  # this value at the release version of the first install of this system.
-  # Before changing this value read the documentation for this option
-  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
-  system.stateVersion = "23.05"; # Did you read the comment?
-}

flake.lock

@@ -1,15 +1,111 @@
 {
   "nodes": {
-    "home-manager": {
+    "crane": {
+      "locked": {
+        "lastModified": 1731098351,
+        "narHash": "sha256-HQkYvKvaLQqNa10KEFGgWHfMAbWBfFp+4cAgkut+NNE=",
+        "owner": "ipetkov",
+        "repo": "crane",
+        "rev": "ef80ead953c1b28316cc3f8613904edc2eb90c28",
+        "type": "github"
+      },
+      "original": {
+        "owner": "ipetkov",
+        "repo": "crane",
+        "type": "github"
+      }
+    },
+    "disko": {
       "inputs": {
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": [
+          "nixpkgs"
+        ]
       },
       "locked": {
-        "lastModified": 1731535640,
+        "lastModified": 1757508292,
-        "narHash": "sha256-2EckCJn4wxran/TsRiCOFcmVpep2m9EBKl99NBh2GnM=",
+        "narHash": "sha256-7lVWL5bC6xBIMWWDal41LlGAG+9u2zUorqo3QCUL4p4=",
+        "owner": "nix-community",
+        "repo": "disko",
+        "rev": "146f45bee02b8bd88812cfce6ffc0f933788875a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "disko",
+        "type": "github"
+      }
+    },
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": [
+          "lanzaboote",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1730504689,
+        "narHash": "sha256-hgmguH29K2fvs9szpq2r3pz2/8cJd2LPS+b4tfNFCwE=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "506278e768c2a08bec68eb62932193e341f55c90",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "lanzaboote",
+          "pre-commit-hooks-nix",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1709087332,
+        "narHash": "sha256-HG2cCnktfHsKV0s4XW83gU3F57gaTljL9KNSuG6bnQs=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
+    "home-manager": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1749499854,
+        "narHash": "sha256-V1BgwiX8NjbRreU6LC2EzmuqFSQAHhoSeNlYJyZ40NE=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "35b055009afd0107b69c286fca34d2ad98940d57",
+        "rev": "1df816c407d3a5090c8496c9b00170af7891f021",
         "type": "github"
       },
       "original": {
@@ -18,13 +114,39 @@
         "type": "github"
       }
     },
+    "lanzaboote": {
+      "inputs": {
+        "crane": "crane",
+        "flake-compat": "flake-compat",
+        "flake-parts": "flake-parts",
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "pre-commit-hooks-nix": "pre-commit-hooks-nix",
+        "rust-overlay": "rust-overlay"
+      },
+      "locked": {
+        "lastModified": 1737639419,
+        "narHash": "sha256-AEEDktApTEZ5PZXNDkry2YV2k6t0dTgLPEmAZbnigXU=",
+        "owner": "nix-community",
+        "repo": "lanzaboote",
+        "rev": "a65905a09e2c43ff63be8c0e86a93712361f871e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "ref": "v0.4.2",
+        "repo": "lanzaboote",
+        "type": "github"
+      }
+    },
     "nixos-hardware": {
       "locked": {
-        "lastModified": 1731403644,
+        "lastModified": 1749195551,
-        "narHash": "sha256-T9V7CTucjRZ4Qc6pUEV/kpgNGzQbHWfGcfK6JJLfUeI=",
+        "narHash": "sha256-W5GKQHgunda/OP9sbKENBZhMBDNu2QahoIPwnsF6CeM=",
         "owner": "nixos",
         "repo": "nixos-hardware",
-        "rev": "f6581f1c3b137086e42a08a906bdada63045f991",
+        "rev": "4602f7e1d3f197b3cb540d5accf5669121629628",
         "type": "github"
       },
       "original": {
@@ -35,41 +157,112 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1731139594,
+        "lastModified": 1749285348,
-        "narHash": "sha256-IigrKK3vYRpUu+HEjPL/phrfh7Ox881er1UEsZvw9Q4=",
+        "narHash": "sha256-frdhQvPbmDYaScPFiCnfdh3B/Vh81Uuoo0w5TkWmmjU=",
-        "owner": "NixOS",
+        "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "76612b17c0ce71689921ca12d9ffdc9c23ce40b2",
+        "rev": "3e3afe5174c561dee0df6f2c2b2236990146329f",
         "type": "github"
       },
       "original": {
-        "owner": "NixOS",
+        "owner": "nixos",
         "ref": "nixos-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
-    "nixpkgs_2": {
+    "nixpkgs-stable": {
       "locked": {
-        "lastModified": 1731139594,
+        "lastModified": 1730741070,
-        "narHash": "sha256-IigrKK3vYRpUu+HEjPL/phrfh7Ox881er1UEsZvw9Q4=",
+        "narHash": "sha256-edm8WG19kWozJ/GqyYx2VjW99EdhjKwbY3ZwdlPAAlo=",
-        "owner": "nixos",
+        "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "76612b17c0ce71689921ca12d9ffdc9c23ce40b2",
+        "rev": "d063c1dd113c91ab27959ba540c0d9753409edf3",
         "type": "github"
       },
       "original": {
-        "owner": "nixos",
+        "owner": "NixOS",
-        "ref": "nixos-unstable",
+        "ref": "nixos-24.05",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
+    "pre-commit-hooks-nix": {
+      "inputs": {
+        "flake-compat": [
+          "lanzaboote",
+          "flake-compat"
+        ],
+        "gitignore": "gitignore",
+        "nixpkgs": [
+          "lanzaboote",
+          "nixpkgs"
+        ],
+        "nixpkgs-stable": "nixpkgs-stable"
+      },
+      "locked": {
+        "lastModified": 1731363552,
+        "narHash": "sha256-vFta1uHnD29VUY4HJOO/D6p6rxyObnf+InnSMT4jlMU=",
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "rev": "cd1af27aa85026ac759d5d3fccf650abe7e1bbf0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
+        "disko": "disko",
         "home-manager": "home-manager",
+        "lanzaboote": "lanzaboote",
         "nixos-hardware": "nixos-hardware",
-        "nixpkgs": "nixpkgs_2"
+        "nixpkgs": "nixpkgs",
+        "sops-nix": "sops-nix"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "nixpkgs": [
+          "lanzaboote",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1731897198,
+        "narHash": "sha256-Ou7vLETSKwmE/HRQz4cImXXJBr/k9gp4J4z/PF8LzTE=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "0be641045af6d8666c11c2c40e45ffc9667839b5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
+    "sops-nix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1747603214,
+        "narHash": "sha256-lAblXm0VwifYCJ/ILPXJwlz0qNY07DDYdLD+9H+Wc8o=",
+        "owner": "Mic92",
+        "repo": "sops-nix",
+        "rev": "8d215e1c981be3aa37e47aeabd4e61bb069548fd",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Mic92",
+        "repo": "sops-nix",
+        "type": "github"
       }
     }
   },

flake.nix

@@ -4,16 +4,58 @@
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
     nixos-hardware.url = "github:nixos/nixos-hardware";
     home-manager.url = "github:nix-community/home-manager";
+    home-manager.inputs.nixpkgs.follows = "nixpkgs";
+    lanzaboote.url = "github:nix-community/lanzaboote/v0.4.2";
+    lanzaboote.inputs.nixpkgs.follows = "nixpkgs";
+    sops-nix.url = "github:Mic92/sops-nix";
+    sops-nix.inputs.nixpkgs.follows = "nixpkgs";
+    disko.url = "github:nix-community/disko";
+    disko.inputs.nixpkgs.follows = "nixpkgs";
   };
-  outputs = inputs@{self, nixpkgs, nixos-hardware, ...}:
+  # https://nix.dev/tutorials/nix-language.html#named-attribute-set-argument
+  outputs = inputs@{self, nixpkgs, nixos-hardware, home-manager, sops-nix, lanzaboote, disko, ...}:
+  let
+    mkSystem = (import ./lib {
+      inherit nixpkgs home-manager inputs;
+    }).mkSystem;
+  in
   {
+    # NOTE: Run `nix flake show` to see what this flake has to offer.
+    # TODO: Enable automated formatting with something like numtide/treefmt-nix
     nixosConfigurations = {
-      neon = nixpkgs.lib.nixosSystem {
+      neon = mkSystem {
+        hostname = "neon";
+        users = [ "jml" ];
+      };
+      lithium = mkSystem {
+        hostname = "lithium";
+        # extraModules = [ inputs.sops-nix.nixosModules.sops ];
+        users = [
+          "jml"
+          "breakglass"
+        ];
+      };
+      titanium = mkSystem {
+        hostname = "titanium";
+        users = [
+          "jml"
+        ];
+        extraModules = [];
+      };
+      # `nix build .#nixosConfigurations.installIso.config.system.build.isoImage`
+      # https://github.com/nix-community/nixos-generators
+      installIso = nixpkgs.lib.nixosSystem {
         system = "x86_64-linux";
         modules = [
-          # https://github.com/NixOS/nixos-hardware/blob/master/README.md#using-nix-flakes-support
+          "${nixpkgs}/nixos/modules/installer/cd-dvd/installation-cd-minimal.nix"
-          nixos-hardware.nixosModules.gpd-pocket-3
+        ];
-          ./configuration.nix
+        specialArgs = {inherit inputs;};
+      };
+    }; 
+    homeConfigurations = {
+      "jml" = home-manager.lib.homeManagerConfiguration {
+        modules = [
+          ./users/jml/home.nix
         ];
       };
     };

git-agecrypt.toml

@@ -0,0 +1,2 @@
+[config]
+"hosts/lithium/semi-secret-vars.nix" = ["ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIP2SVmZ3iJF/rviKhTgkZOvu1fWr6G29K4u6yaxjZn4H jay@lithium"]

hosts/lithium/README.md

@@ -0,0 +1,26 @@
+# lithium
+
+This is my primary homelab host/NAS, previously powered by TrueNAS Scale/k3s.
+
+## Manual Actions
+
+Even with fully declarative Nix/Nixpkgs/NixOS at the end of the day there are
+still some actions that need to be taken manually.
+
+- secrets configuration (both for SOPS and git-agecrypt semi-secrets)
+- kanidm user management
+- tailscale auth key
+- jellyfin configuration via web-ui
+
+## Semi-Secrets
+
+`semi-secret-vars.nix` is using [git-agecrypt](https://github.com/vlaci/git-agecrypt)
+and following a pattern I discovered here:
+ - https://github.com/nyawox/arcanum/blob/4629dfba1bc6d4dd2f4cf45724df81289230b61a/var/README.md
+ - https://github.com/vlaci/git-agecrypt
+
+Essentially there are some details I won't want exposed in the repository, but
+I do want them available to all my nix modules. The main one being the domain.
+
+While it's not really a secret in the way a password is, consider this effort a
+mitigation against ddos attacks and automated requests and login attempts.

hosts/lithium/configuration.nix

@@ -0,0 +1,13 @@
+{ config, pkgs, ... }:
+{
+  sops.defaultSopsFile = ./secrets/common.yaml;
+  networking.hostName = "lithium";
+  networking.domain = config.vars.domain;
+  environment.systemPackages = with pkgs; [
+    zfs
+  ];
+  services.openssh.enable = true;
+  programs.mosh.enable = true; 
+  system.stateVersion = "25.05";
+}
+

hosts/lithium/default.nix

@@ -0,0 +1,16 @@
+{ inputs, ... }:
+{
+  imports = [
+    ../../modules/nixos/base.nix
+    inputs.sops-nix.nixosModules.sops
+    ./hardware.nix
+    ./configuration.nix
+    ./semi-secret-vars.nix
+    ./services/caddy.nix
+    ./services/tailscale.nix
+    ./services/kanidm.nix
+    ./services/jellyfin.nix
+    ./services/uptime-kuma.nix
+    ./services/file-shares.nix
+  ];
+}

hosts/lithium/hardware.nix

@@ -0,0 +1,63 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "mpt3sas" "nvme" "usbhid" "usb_storage" "sd_mod" "sr_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/12861f9f-ca29-444d-9af1-330699a79a78";
+      fsType = "btrfs";
+      options = [ "subvol=root" ];
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/2B64-2D7E";
+      fsType = "vfat";
+      options = [ "fmask=0077" "dmask=0077" ];
+    };
+
+  fileSystems."/home" =
+    { device = "/dev/disk/by-uuid/12861f9f-ca29-444d-9af1-330699a79a78";
+      fsType = "btrfs";
+      options = [ "subvol=home" ];
+    };
+
+  fileSystems."/nix" =
+    { device = "/dev/disk/by-uuid/12861f9f-ca29-444d-9af1-330699a79a78";
+      fsType = "btrfs";
+      options = [ "subvol=nix" ];
+    };
+
+  swapDevices =
+    [ { device = "/dev/disk/by-uuid/df457998-5ffc-422b-a3c9-6e5734c88a41"; }
+      { device = "/dev/disk/by-uuid/f970449e-2eee-450b-b19f-6361f4fb3c16"; }
+    ];
+
+  # Required despite not booting from zfs, in order to make zfs.ko available to modprobe.
+  # https://openzfs.github.io/openzfs-docs/Getting%20Started/NixOS/index.html#installation
+  boot.supportedFilesystems = [ "zfs" ];
+  boot.zfs.forceImportRoot = false;
+  networking.hostId = "97fd89d8";
+  boot.zfs.extraPools = [ "tank" ];
+  services.zfs.autoScrub.enable = true;
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.eno1.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp6s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}

hosts/lithium/secrets/caddy.env

@@ -0,0 +1,9 @@
+CLOUDFLARE_API_TOKEN=ENC[AES256_GCM,data:fNkufR8Zzubh1+sJWfEFwfB/YckqeNdxbYKZCZ0qWGDOjanfzjUzKQ==,iv:6FEzPk4OUxqywIz3ChxCvs9RsBK7ypkrLiY2VFCwWzA=,tag:BBvcCXr0BRevU13SfDOLeg==,type:str]
+sops_age__list_0__map_enc=-----BEGIN AGE ENCRYPTED FILE-----\nYWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBCSldSdUdMYk9uQzZuS0tr\nTStEZ3owSE5xdndRVjYrdUN5SVc3cmZiM1VJCjhBa1ExL3hBWEZOWjVxU1ZMcUJR\nUTJJN0lyU2xCNUFzeUdtdDZOaWFMVEEKLS0tIEI2emxCbUxVYVl4a20ySFhab0dC\nZUxkNXhpTXRhZ1pPU0sybnRPakhuOGsKJ3wUExxovoJSAOz+A6lNsCquGgTconmP\ng3XSNwxPhqtKUdVrw4CvDFH2AuU0RCKSbOzO2SNe72pyuEhtME/01g==\n-----END AGE ENCRYPTED FILE-----\n
+sops_age__list_0__map_recipient=age1mv8xtvkuuw3hphq5ytaekz7p8a4kht79uajyhy534uy9e5472fhqj5zpxu
+sops_age__list_1__map_enc=-----BEGIN AGE ENCRYPTED FILE-----\nYWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBNSFlMZmdsOUlldnF5dENn\nRVBkMThsMEg5dHQ5UFhhK0RtbVJuWU5ZMURrCjNFTWo4K0w5SUpGMVd2c3NQODhR\nQlMrc3BYY0Z6VldvNVdiQ2ZFZ3V6OGcKLS0tIC8vcWNuYXp3NmF3MmdNRVgvbUdu\nZGxwdU12M1lTa1VLMGx2bVRheVc3c1EKFGvr6wx2CyDyT3QxkpFnw8p10AQz+FwT\n+vCmueVLskc9UZavETzbif2LIWewuPtNjqGNGZwrWFMUZcy8kyVXUQ==\n-----END AGE ENCRYPTED FILE-----\n
+sops_age__list_1__map_recipient=age148yre4vaxp6lm59rft24te46szawqyguf8znkrtpq7ud8tpteauqxkwyjl
+sops_lastmodified=2025-06-07T02:03:12Z
+sops_mac=ENC[AES256_GCM,data:Uw17J9ZYOhNENlfGnFUsjvVm/9IT+hrDDt8UvIIWSMhT54gXIejEDv1IWtNho6JlSN0Wrnl5hEeDFUkHFJ4Ae9EW1FwSpGH2dy6iZ6OUMQMI2hgE28J9wk8c5kSKirhXEPvmCaTBIypQnL0NcKHCuaovKnt1PRRwLrqANLoo9iw=,iv:87f5cCHjqPby2VRhLBJThgCvkGp6sajxYnS/Oyb3hdo=,tag:Gn6a20W1WHVr/Zyvyyk5TQ==,type:str]
+sops_unencrypted_suffix=_unencrypted
+sops_version=3.10.2

hosts/lithium/secrets/common.yaml

@@ -0,0 +1,27 @@
+kanidm:
+    admin-password: ENC[AES256_GCM,data:wNE9qWAjfp8tf29sn1Q6GYrbw8g=,iv:uzg971jGIVyEkEbcOm2W8dy4wVgWiL+4Ph/f/bnieI0=,tag:/yY1okvnJLYGw2OLBd2Zdg==,type:str]
+    idm-admin-password: ENC[AES256_GCM,data:jIWaXUgHjhp0bP/DrF1m+plzcvE=,iv:nNpIkg9FTbCncih1/pAk4o7teuk7Gf/nPXyrnpFx4no=,tag:WhhsjtEdyS3Zw4F7uF9APg==,type:str]
+sops:
+    age:
+        - recipient: age1mv8xtvkuuw3hphq5ytaekz7p8a4kht79uajyhy534uy9e5472fhqj5zpxu
+          enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSB5cFlReGMxV1R3QW1Vd1RU
+            WTgzNm5tbGhld3RMTGpMU1M2eVdoU0hmZGtNCmZLSTNOMk9IMDh6K2svRmRveGw3
+            dlFUZ2lzTDBJWnBSTEhVTmVDOHVTdW8KLS0tIDhLWVZWSVJYM2x4YTlZWWZZZVNh
+            T2drb0p6TjZrZldpU0VUd0xmcVJUSk0KMjX3vr/74/HU7fmulefUHiNzwX8LcAes
+            ob3fabhMk9lmbuQk21rpoWbz3PNTfCQH63q+h7gLJTCCW2ISTvh/KQ==
+            -----END AGE ENCRYPTED FILE-----
+        - recipient: age148yre4vaxp6lm59rft24te46szawqyguf8znkrtpq7ud8tpteauqxkwyjl
+          enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBpK3VvNUhHNmJUQVZlREJl
+            c1oyZWx4ekNEM0VqL3NKanNmSmZtQXNpcWdVCmpWcklLVnhWUisvcGZzV1NHN3p4
+            bW4wL09wL01XaHpveGdmbU4rbEp5NmsKLS0tIElhQVRmS05xUmJIZlI0S1dyWGhV
+            OGtKdHVwbWY2akJTQkF4YzlnNWQzNU0K81PyJ1tOvwOohNu9iUkS8vE7UXFRnJab
+            8OLHtzX7FrkIH8rO2D5vEL9gPmxUtNKc9Ad3sndQls/yfg4wJAYedA==
+            -----END AGE ENCRYPTED FILE-----
+    lastmodified: "2025-06-07T02:02:46Z"
+    mac: ENC[AES256_GCM,data:7mWOon8Hs2oU40l1dx4tVE8yXgcKoxfUAzY8zbtTzXqCOhzTzhY4OZAZiu4RiUSIOm7dMdQbH9zSx0j+5e2k9QflfJDDM3rWfunTa7L8Bm8k9b/WjS0Fnb7OV0InO6tLxQwkTamMcc7ORrKxwHB5PwuXD+efeWNXveHo5GYgF+M=,iv:seh2Pzt+AmmxyD5hwh3VkLQTDMq0Gh9mV6J3QrtxcmM=,tag:jpXn2fht8wArB2KD/ZmbyA==,type:str]
+    unencrypted_suffix: _unencrypted
+    version: 3.10.2

hosts/lithium/semi-secret-vars.nix

@@ -0,0 +1,8 @@
+age-encryption.org/v1
+-> ssh-ed25519 rhvgyQ 8V5ehsrqPR8s2joIfdpZRYDQpwH5BXI1GgQ/Qcb/Wg4
+ZKRZkXT0uPbXzuXLsteW31GsKzZy1deUl1GdWeQB+4U
+-> "f<f<DW--grease AQ] z5_)RUB7 2>&DjVar
+Lhe9DbPHOqqKQ9HDhJB2xbIkrsxFGm39Yzr1J+ZbJnWYx5FCdGCCIexmv3GJy94t
+
+--- qKkjS2aEWavCLldEwi4MUTlDoQuIu9tSRr5yoeZVQhs
+b¾Z~l…ŠU"Uãp­µ¥ vÉñ¿³$?ƒ<EFBFBD>æ;:Z›ÖuÒ…^öËÅŠQ/MBɉf]Ξ)4PYáî-ß…äê«Ü» <EFBFBD>áØŸl¨Á¯&e‡âû2”©ÈOUqXóMD<EFBFBD>SÜä7ÁE¿ð”ÀÉæ&us–¿ð<EFBFBD>ÁU÷#Êdø#Ø‚ÿÀÂWõ9Øãó^k.ÜÝ0áü7«ðhŸ°©s4CRIwUÅa‚ʯMÀw‰i·‡U<EFBFBD>riÿkªb}yVÒÈÜüÏ>©¿rŽ°[ƒÝ8s

hosts/lithium/services/caddy.nix

@@ -0,0 +1,41 @@
+{ config, pkgs, ... }:
+{
+  sops.secrets.caddy_env = {
+    sopsFile = ../secrets/caddy.env;
+    format = "dotenv";
+    mode = "0440";
+    owner = config.services.caddy.user;
+    group = config.services.caddy.group;
+    restartUnits = [ "caddy.service" ];
+  };
+  services.caddy = {
+    enable = true;
+    package = pkgs.caddy.withPlugins {
+      # NOTE: Occasionally specify @latest and update the new versions, and the result hash.
+      plugins = [
+        "github.com/mholt/caddy-dynamicdns@v0.0.0-20250430031602-b846b9e8fb83"
+        "github.com/caddy-dns/cloudflare@v0.2.1"
+      ];
+
+      # NOTE: Built on 6/4/2025
+      hash = "sha256-swskhAr7yFJX+qy0FR54nqJarTOojwhV2Mbk7+fyS0I=";
+    };
+    # NOTE: Use Staging CA while testing, check `systemctl status caddy`
+    # to see if everything is working.
+    # acmeCA = "https://acme-staging-v02.api.letsencrypt.org/directory";
+
+    # TODO: Add Metrics with Prometheus & Grafana
+    environmentFile = config.sops.secrets.caddy_env.path;
+    globalConfig = ''
+      # acme_dns cloudflare {env.CLOUDFLARE_API_TOKEN}
+      dynamic_dns {
+        provider cloudflare {env.CLOUDFLARE_API_TOKEN}
+        domains {
+          ${config.networking.domain} @
+        }
+        dynamic_domains
+      }
+    '';
+  };
+  networking.firewall.allowedTCPPorts = [ 80 443 ];
+}

hosts/lithium/services/file-shares.nix

@@ -0,0 +1,78 @@
+{ ... }:
+{
+  # NOTE: We do need to guarantee this group exists.
+  # and manually provision users with `sudo smbpasswd -a $username`
+  users.groups.samba = {};
+  services.samba = {
+    enable = true;
+    openFirewall = true;
+
+    nmbd.enable = false;  # NOTE: Disable NetBIOS responses.
+    # usershares.enable = true;  # NOTE: Members of group "samba" can create usershares.
+
+    # NOTE: Refer to https://www.samba.org/samba/docs/current/man-html/smb.conf.5.html
+    # to configure this service.
+    settings = {
+      global = {
+        workgroup = "WORKGROUP";
+        "hosts allow" = "192.168.50.";
+        "hosts deny" = "ALL";
+        "guest account" = "nobody";
+        "map to guest" = "bad user";
+
+        "log file" = "/var/log/samba/%m.log";
+        "max log size" = 1000;
+
+        "create mask" = "0660";
+        "directory mask" = "2770";
+      };
+
+      # NOTE: usershares enables users to create their own shares. This creates
+      # a share per-user.
+      homes = {
+        browseable = "no";
+        writable = "yes";
+        "read only" = "no";
+        "guest ok" = "no";
+        "valid users" = "%S"; 
+        path = "/tank/shares/personal/%S";
+      };
+
+      staging = {
+        comment = "Temp Upload Area";
+        path = "/tank/shares/staging";
+        browseable = "yes";
+        writable = "yes";
+        "guest ok" = "yes";
+        "force user" = "nobody";
+        "force group" = "nogroup";
+        "create mask" = "0666";
+        "directory mask" = "0777";
+      };
+
+      backups = {
+        comment = "Device Backups";
+        path = "/tank/shares/backups";
+        browseable = "no";
+        writable = "yes";
+        "valid users" = "@samba";
+        "guest ok" = "no";
+      };
+
+      ## TODO: Time Machine Configuration
+      # http://wiki.nixos.org/wiki/Samba#Apple_Time_Machine
+    };
+  };
+
+  # NOTE: This is used to advertise shares to Windows hosts.
+  services.samba-wsdd = {
+    enable = true;
+    openFirewall = true;
+  };
+  #services.avahi = {
+    #enable = true;
+    #openFirewall = true;
+    #publish.enable = true;
+    #publish.userServices = true;
+  #};
+}

hosts/lithium/services/jellyfin.nix

@@ -0,0 +1,20 @@
+{ config, pkgs, ... }:
+let
+  svcDomain = "tv.${config.networking.domain}";
+in
+{
+  services.caddy.virtualHosts."${svcDomain}".extraConfig = ''
+    reverse_proxy :8096
+  '';
+  services.jellyfin = {
+    enable = true;
+    # NOTE: Keeping this open for now, for internal network use.
+    # ports 8096 for http and 8920 for https
+    openFirewall = true;
+  };
+  environment.systemPackages = [
+    pkgs.jellyfin
+    pkgs.jellyfin-web
+    pkgs.jellyfin-ffmpeg
+  ];
+}

hosts/lithium/services/kanidm.nix

@@ -0,0 +1,126 @@
+{ config, pkgs, lib, ... }:
+let
+  svcDomain = "id.${config.networking.domain}";
+  caddyCertsRoot = "${config.services.caddy.dataDir}/.local/share/caddy/certificates";
+  caddyCertsDir = "${caddyCertsRoot}/acme-v02.api.letsencrypt.org-directory";
+  certsDir = "/var/lib/kanidm/certs";
+in
+{
+  # Example of yoinking certs from caddy:
+  # https://github.com/marcusramberg/nix-config/blob/e558914dd3705150511c5ef76278fc50bb4604f3/nixos/kanidm.nix#L3
+
+  # TODO: If possible, consider specifying the cert location here instead of the following kludge.
+  services.caddy.virtualHosts."${svcDomain}".extraConfig = ''
+    reverse_proxy :8443 {
+      transport http {
+        tls_server_name ${svcDomain}
+      }
+    }
+  '';
+
+  # NOTE: Attempted kludge due to caddy generating (and therefore owning the certs)
+  systemd.tmpfiles.rules = [
+    "d ${certsDir} 0750 kanidm caddy -"
+    "C ${certsDir}/cert.pem - kanidm - - ${caddyCertsDir}/${svcDomain}/${svcDomain}.crt"
+    "C ${certsDir}/key.key  - kanidm - - ${caddyCertsDir}/${svcDomain}/${svcDomain}.key"
+  ];
+  systemd.services.kanidm = {
+    after = [ "systemd-tmpfiles-setup.service" ];
+    requires = [ "caddy.service" "systemd-tmpfiles-setup.service" ];
+  };
+  users.users.kanidm.extraGroups = [
+    "caddy"
+  ];
+
+  sops.secrets = {
+    "kanidm/admin-password" = {
+      group = "kanidm";
+      mode = "440";
+    };
+    "kanidm/idm-admin-password" = {
+      group = "kanidm";
+      mode = "440";
+    };
+  };
+
+  services.kanidm = {
+    package = pkgs.kanidmWithSecretProvisioning;
+    enableServer = true;
+    serverSettings = {
+      # NOTE: Required to start the server: https://kanidm.github.io/kanidm/stable/server_configuration.html
+      # domain, origin, tls_chain, tls_key
+      domain = svcDomain;
+      origin = "https://${svcDomain}";
+      tls_chain = "${certsDir}/cert.pem";
+      tls_key = "${certsDir}/key.key";
+
+      # NOTE: Optional Settings
+      ldapbindaddress = "127.0.0.1:3636";  # For Jellyfin LDAP integration.
+
+      # trust_x_forwarded_for = true;
+    };
+
+    enableClient = true;
+    clientSettings.uri = config.services.kanidm.serverSettings.origin;
+
+    # NOTE: POSIX accounts bound to LDAP assume 'anonymous' permissions.
+    # https://kanidm.github.io/kanidm/stable/integrations/pam_and_nsswitch.html
+    enablePam = true;
+    unixSettings = {
+      pam_allowed_login_groups = [
+        "unix.admins"
+      ];
+      home_attr = "uuid";
+      home_alias = "name";
+    };
+
+    # NOTE: There are manual steps required as root to allow a user to set
+    # their own credentials, or to confiugre an account as posix. As-is this
+    # module doesn't support provisioning a complete user /w credentials.
+    # Adding an account to `idm_high_privilege` prevents an account from being
+    # tampered with by any other admin accounts.
+    # https://kanidm.github.io/kanidm/stable/accounts/authentication_and_credentials.html#onboarding-a-new-person--resetting-credentials
+    provision = {
+      enable = true;
+      autoRemove = false;
+      adminPasswordFile = config.sops.secrets."kanidm/admin-password".path;
+      idmAdminPasswordFile = config.sops.secrets."kanidm/idm-admin-password".path;
+
+      # NOTE: Basically all this can do is pair up a uuid with a collection of
+      # groups, and you still need to manually issue a reset token so that the
+      # user can create a Passekey and/or Password /w MFA.
+      persons = {
+        # https://kanidm.github.io/kanidm/stable/accounts/authentication_and_credentials.html#resetting-person-account-credentials
+        zenware = {
+          displayName = "zenware";
+          groups = [
+            "unix.admins"
+            "git.users"
+            "git.admins"
+            "tv.users"
+          ];
+        };
+      };
+      groups = {
+        "unix.admins" = {};
+        "git.users" = {};
+        "git.admins" = {};
+        "tv.users" = {};
+        "tv.admins" = {};
+      };
+    };
+  };
+
+  # NOTE: Allow Kanidm auth over SSH
+  services.openssh.settings = {
+    UsePAM = true;
+    PubkeyAuthentication = true;
+    PasswordAuthentication = true;
+    AuthorizedKeysCommand = "${
+      lib.getExe' config.services.kanidm.package
+      "kanidm_ssh_authorizedkeys"
+    } %u";
+    AuthorizedKeysCommandUser = "nobody";
+  };
+
+}

hosts/lithium/services/tailscale.nix

@@ -0,0 +1,22 @@
+{ config, pkgs, ... }:
+#let
+  #hostName = config.networking.hostName;
+  #tailnetName = "tail79151.ts.net";
+  #svcDomain = "${hostName}.${tailnetName}";
+#in
+{
+  # NOTE: This does require a manual step of creating a tailscale account if
+  # you don't already have one, and generating an Auth Key:
+  # https://login.tailscale.com/admin/machines/new-linux
+  # After enabling this and generating an install script copy the authkey and
+  # run: `sudo tailscale up --auth-key=KEY`
+
+  # NOTE: Use Caddy to create and manage SSL Certs for Tailscale
+  #services.caddy.virtualHosts."${svcDomain}".extraConfig = ''
+    #reverse_proxy :<port>
+  #'';
+  services.tailscale = {
+    enable = true;
+    #permitCertUid = "caddy";  # Allow caddy to edit certs
+  };
+}

hosts/lithium/services/uptime-kuma.nix

@@ -0,0 +1,18 @@
+{ config, pkgs, ... }:
+let
+  svcDomain = "status.${config.networking.domain}";
+  svcPort = config.services.uptime-kuma.settings.PORT;
+in
+{
+  services.caddy.virtualHosts."${svcDomain}".extraConfig = ''
+    reverse_proxy :${svcPort}
+  '';
+  # NOTE: Currently requires some web-interface configuration
+  # User must set up an admin account, monitors, and status pages manually.
+  services.uptime-kuma = {
+    enable = true;
+    # NOTE: NixOS Attributes here resolve into these ENV vars:
+    # https://github.com/louislam/uptime-kuma/wiki/Environment-Variables
+    # settings = {};
+  };
+}

hosts/neon/configuration.nix

@@ -0,0 +1,7 @@
+{ ... }:
+{
+  networking.hostName = "neon";
+  networking.networkmanager.enable = true;
+  services.openssh.enable = true;
+  system.stateVersion = "23.05";
+}

hosts/neon/default.nix

@@ -0,0 +1,14 @@
+{ inputs, ... }:
+{
+  imports = [
+    ../../modules/nixos/base.nix
+    ../../modules/nixos/audio.nix
+    ../../modules/nixos/desktop.nix
+    # https://github.com/NixOS/nixos-hardware/blob/master/README.md#using-nix-flakes-support
+    inputs.nixos-hardware.nixosModules.gpd-pocket-3
+     # override from nixos-hardware
+    ({config, lib, ...}: { services.xserver.videoDrivers = lib.mkForce [ "modesetting" ]; })
+    ./hardware-configuration.nix
+    ./configuration.nix
+  ];
+}

hosts/neon/hardware-configuration.nix

@@ -1,7 +1,7 @@
 # Do not modify this file!  It was generated by ‘nixos-generate-config’
 # and may be overwritten by future invocations.  Please make changes
 # to /etc/nixos/configuration.nix instead.
-{ config, lib, pkgs, modulesPath, ... }:
+{ config, lib, modulesPath, ... }:
 
 {
   imports =

hosts/titanium/configuration.nix

@@ -0,0 +1,20 @@
+{ config, lib, pkgs, ... }:
+{
+  powerManagement.enable = false;
+  networking.hostName = "titanium";
+  networking.networkmanager.enable = true;
+  environment.systemPackages = with pkgs; [
+    sbctl  # Secure-Boot
+    helix nil  # nice for editing '.nix'
+    discord
+    signal-desktop
+    obs-studio
+  ];
+  # Hardware Specific programs...
+  #programs.ryzen-monitor-ng.enable = true;
+  #programs.rog-control-center.enable = true;
+  services.openssh.enable = true;
+  services.tailscale.enable = true;
+  networking.firewall.trustedInterfaces = [ "tailscale0" ];
+  system.stateVersion = "25.05";
+}

hosts/titanium/default.nix

@@ -0,0 +1,17 @@
+{ inputs, ... }:
+{
+  nixpkgs.config.allowUnfree = true;
+  imports = [
+    ../../modules/nixos/base.nix
+    ../../modules/nixos/audio.nix
+    ../../modules/nixos/desktop.nix
+    ../../modules/nixos/gaming.nix
+    inputs.nixos-hardware.nixosModules.asus-rog-strix-x570e
+    #./hardware.nix
+    ./configuration.nix
+    ./nvidia.nix
+    ./secure-boot.nix
+    inputs.disko.nixosModules.disko
+    ./disko.nix
+  ];
+}

hosts/titanium/disko.nix

@@ -0,0 +1,82 @@
+{ ... }:
+{
+  # Based on:
+  # https://github.com/nix-community/disko/blob/master/example/luks-btrfs-subvolumes.nix
+  #
+  # Run with:
+  # `sudo nix --experimental-features "nix-command flakes" run github:nix-community/disko/latest -- --mode destroy,format,mount /tmp/disk-config.nix`
+  disko.devices = {
+    disk = {
+      main = {
+	      type = "disk";
+	      device = "/dev/disk/by-path/pci-0000:08:00.0-ata-2";
+	      content = {
+					type = "gpt";
+					partitions = {
+					  ESP = {
+					    size = "512M";
+					    type = "EF00";
+					    content = {
+					      type = "filesystem";
+					      format = "vfat";
+					      mountpoint = "/boot";
+					      mountOptions = [ "umask=0077" ];
+					    };
+					  };
+					  luks = {
+					    size = "100%";  # Full Disk Encryption
+					    content = {
+					      type = "luks";
+					      name = "crypted";
+					      # disable settings.keyFile if you want to use interactive password entry
+					      # passwordFile = "/tmp/secret.key";  # Interactive
+					      extraOpenArgs = [
+									"--allow-discards"
+									"--perf-no_read_workqueue"
+									"--perf-no_write_workqueue"
+								];
+					      settings = {
+									allowDiscards = true;
+									crypttabExtraOpts = [ "fido2-device=auto" "token-timeout=10" ];
+									#keyFile = "/tmp/secret.key";
+					      };
+					      #additionalKeyFiles = [ "/tmp/additionalSecret.key" ];
+					      content = {
+									type = "btrfs";
+									extraArgs = [ "-L" "nixos" "-f" ];  # What?
+									subvolumes = {
+									  "/root" = {
+									    mountpoint = "/";
+									    mountOptions = [
+									      "compress=zstd"
+									      "noatime"
+									    ];
+									  };
+									  "/home" = {
+									    mountpoint = "/home";
+									    mountOptions = [
+									      "compress=zstd"
+									      "noatime"
+									    ];
+									  };
+									  "/nix" = {
+									    mountpoint = "/nix";
+									    mountOptions = [
+									      "compress=zstd"
+									      "noatime"
+									    ];
+									  };
+									  "/swap" = {
+									    mountpoint = "/.swapvol";
+									    swap.swapfile.size = "32G";
+									  };
+									};
+					      };
+					    };
+					  };
+					};
+	      };
+			};
+    };
+  };
+}

hosts/titanium/hardware.nix

@@ -0,0 +1,61 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "usbhid" "usb_storage" "sd_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-amd" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/0b3de117-c34f-4cc6-81db-5b84ea46cd51";
+      fsType = "btrfs";
+      options = [ "subvol=root" ];
+    };
+
+  boot.initrd.luks.devices."crypted".device = "/dev/disk/by-uuid/0ccc4028-c27e-4259-ade9-a2b2081722cb";
+
+  fileSystems."/.swapvol" =
+    { device = "/dev/disk/by-uuid/0b3de117-c34f-4cc6-81db-5b84ea46cd51";
+      fsType = "btrfs";
+      options = [ "subvol=swap" ];
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/219D-4579";
+      fsType = "vfat";
+      options = [ "fmask=0077" "dmask=0077" ];
+    };
+
+  fileSystems."/home" =
+    { device = "/dev/disk/by-uuid/0b3de117-c34f-4cc6-81db-5b84ea46cd51";
+      fsType = "btrfs";
+      options = [ "subvol=home" ];
+    };
+
+  fileSystems."/nix" =
+    { device = "/dev/disk/by-uuid/0b3de117-c34f-4cc6-81db-5b84ea46cd51";
+      fsType = "btrfs";
+      options = [ "subvol=nix" ];
+    };
+
+  swapDevices = [ ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp4s0.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp5s0.useDHCP = lib.mkDefault true;
+  # networking.interfaces.wlp3s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}

hosts/titanium/nvidia.nix

@@ -0,0 +1,24 @@
+{ config, ... }: {
+  # GPU Things
+  # NOTE: The following command can be helpful when diagnosing GPU issues:
+  # `nix shell nixpkgs#vulkan-tools -c vulkaninfo --summary`
+  hardware.graphics = {
+    enable = true;
+    enable32Bit = true;
+  };
+  services.xserver.videoDrivers = [ "nvidia" ];
+  # NOTE: This acceptLicense thing was necessary for nvidia packages to begin
+  # working, and it seems undocumented in the usual places.
+  # I found it on a forum thread, and then inside the nixpkgs repo.
+  # https://discourse.nixos.org/t/nvidia-settings-and-nvidia-offload-not-found/37187/23
+  # https://github.com/NixOS/nixpkgs/blob/master/pkgs/os-specific/linux/nvidia-x11/generic.nix#L65
+  nixpkgs.config.nvidia.acceptLicense = true;
+  hardware.nvidia = {
+    package = config.boot.kernelPackages.nvidiaPackages.latest;
+    modesetting.enable = true;
+    open = true;
+    nvidiaSettings = true;
+    powerManagement.enable = false;
+    powerManagement.finegrained = false;
+  };
+}

hosts/titanium/secure-boot.nix

@@ -0,0 +1,7 @@
+{ pkgs, lib, inputs, ... }: {
+  imports = with inputs; [ lanzaboote.nixosModules.lanzaboote ];
+  environment.systemPackages = [ pkgs.sbctl ];
+  boot.loader.systemd-boot.enable = lib.mkForce false;
+  boot.lanzaboote.enable = true;
+  boot.lanzaboote.pkiBundle = "/var/lib/sbctl";
+}

lib/default.nix

@@ -0,0 +1,47 @@
+{ nixpkgs, home-manager, inputs, ... }:
+{
+  # It's not really that I care about whether a system is a desktop system or
+  # a server system, but moreso that I care about whether a system is headless or not.
+  # I also care about things like if it's darwin, or wsl.
+  mkSystem = {
+    hostname,
+    system ? "x86_64-linux",
+    users ? [],
+    extraModules ? []
+  }:
+  let
+    hostModule = import ../hosts/${hostname} { inherit inputs; };
+    userModules = map (name:
+      import ../users/${name} {
+        pkgs = nixpkgs.legacyPackages.${system};
+        lib = nixpkgs.lib;
+      }
+    ) users;
+
+    homeUserNames = builtins.filter (name:
+      builtins.pathExists ../users/${name}/home.nix
+    ) users;
+
+    homeUsers = nixpkgs.lib.listToAttrs (map (name: {
+      name = name;
+      value = import ../users/${name}/home.nix {
+        username = name;
+        pkgs = nixpkgs.legacyPackages.${system};
+        lib = nixpkgs.lib;
+      };
+    }) homeUserNames);
+  in
+    nixpkgs.lib.nixosSystem {
+      inherit system;
+      modules = [ hostModule ]
+        ++ userModules
+        ++ extraModules
+        ++ (if homeUserNames != [] then [
+          home-manager.nixosModules.home-manager
+          {
+            home-manager.backupFileExtension = "hm-bak";
+            home-manager.users = homeUsers;
+          }
+        ] else []);
+    };
+}

modules/nixos/audio.nix

@@ -0,0 +1,15 @@
+{ pkgs, ... }:
+{
+  # For real-time audio/production consider: https://github.com/musnix/musnix
+  security.rtkit.enable = true;
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+  };
+
+  environment.systemPackages = with pkgs; [
+    pavucontrol
+  ];
+}

modules/nixos/base.nix

@@ -0,0 +1,110 @@
+{ config, pkgs, lib, ... }:
+{
+  nixpkgs.config.allowUnfree = true;
+  nix.settings = {
+    experimental-features = [ "nix-command" "flakes" ];
+  };
+
+  # Default to systemd-boot
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  # https://datatracker.ietf.org/doc/html/rfc8375
+  networking.domain = "home.arpa";
+
+  time.timeZone = "America/Chicago";
+
+  i18n.defaultLocale = "en_US.UTF-8";
+  i18n.extraLocaleSettings = {
+    LC_ADDRESS = "en_US.UTF-8";
+    LC_IDENTIFICATION = "en_US.UTF-8";
+    LC_MEASUREMENT = "en_US.UTF-8";
+    LC_MONETARY = "en_US.UTF-8";
+    LC_NAME = "en_US.UTF-8";
+    LC_NUMERIC = "en_US.UTF-8";
+    LC_PAPER = "en_US.UTF-8";
+    LC_TELEPHONE = "en_US.UTF-8";
+    LC_TIME = "en_US.UTF-8";
+  };
+
+  console.font = null;  # Kernel will automatically choose a font.
+  console.keyMap = "us";
+  # 4-bit ANSI -> Catpuccin Mocha Colors: https://catppuccin.com/palette/
+  console.colors = [
+    "11111b"  # black               -> crust
+    "f38ba8"  # red                 -> red
+    "a6e3a1"  # green               -> green
+    "fab387"  # yellow              -> peach
+    "89b4fa"  # blue                -> blue
+    "cba6f7"  # magenta             -> mauve
+    "74c7ec"  # cyan                -> sapphire
+    "6c7086"  # white               -> overlay 0
+    "313244"  # bright black (gray) -> surface 0
+    "eba0ac"  # bright red          -> maroon
+    "94e2d5"  # bright green        -> teal
+    "f9e2af"  # bright yellow       -> yellow
+    "b4befe"  # bright blue         -> lavender
+    "f5c2e7"  # bright magenta      -> pink
+    "89dceb"  # bright cyan         -> sky
+    "cdd6f4"  # bright white        -> text
+  ];
+
+  networking.firewall.enable = true;
+
+  # Installed on every NixOS Host.
+  environment.systemPackages = with pkgs; [
+    wget curl
+    ripgrep
+  ];
+  programs = {
+    less = {
+      enable = true;
+      # https://ascending.wordpress.com/2011/02/11/unix-tip-make-less-more-friendly/
+      # https://www.topbug.net/blog/2016/09/27/make-gnu-less-more-powerful/
+      envVariables = {
+        LESS = lib.concatStrings [
+          "--quit-if-one-screen "
+          "--ignore-case "
+          "--long-prompt "
+          "--raw-control-chars "  # raw ANSI colors
+          "--hilite-unread "  # first unread line after forward screen
+          "--tabs=4 "
+          "--no-init "  # Don't use termcap init/deinit strings.
+        ];
+        # Render colors
+        # TODO: Figure out how to represent those termcap sequences properly.
+        #LESS_TERMCAP_mb=$'\E[1;31m'     # begin bold
+        #LESS_TERMCAP_md=$'\E[1;36m'     # begin blink
+        #LESS_TERMCAP_me=$'\E[0m'        # reset bold/blink
+        #LESS_TERMCAP_so=$'\E[01;44;33m' # begin reverse video
+        #LESS_TERMCAP_se=$'\E[0m'        # reset reverse video
+        #LESS_TERMCAP_us=$'\E[1;32m'     # begin underline
+        #LESS_TERMCAP_ue=$'\E[0m'        # reset underline
+      };
+    };
+
+    git.enable = true;
+    htop.enable = true;
+    command-not-found.enable = false;
+    bat.enable = true;
+    bandwhich.enable = true;
+
+    nano.enable = false;
+    neovim = {
+      enable = true;
+      defaultEditor = true;
+
+      viAlias = true;
+      vimAlias = true;
+
+      withRuby = true;
+      withPython3 = true;
+      withNodeJs = true;
+
+      #configure = {};
+    };
+  };
+
+  # Services running on all machines
+  services.avahi.enable = true;  # zeroconf/mDNS(.local)
+}

modules/nixos/desktop.nix

@@ -0,0 +1,40 @@
+{ pkgs, ... }:
+{
+  environment.systemPackages = with pkgs; [
+    yubikey-personalization
+    xdg-desktop-portal-gtk
+    xdg-desktop-portal-hyprland
+    xwayland
+    rofi-wayland
+    waybar
+    hyprpaper
+    kitty # hyprland default term
+    swww # wallpaper
+  ];
+  services.xserver.enable = true;
+  services.xserver.xkb.layout = "us";
+
+  services.displayManager.gdm.enable = true;
+  services.desktopManager.gnome.enable = true;
+
+  services.printing.enable = true;
+
+  programs.hyprland = {
+    enable = true;
+    withUWSM = true;
+    xwayland.enable = true;
+  };
+  programs.hyprlock.enable = true;
+  # Hint electron apps to use wayland
+  environment.sessionVariables = {
+    NIXOS_OZONE_WL = "1";
+  };
+  # screen sharing /w hyp 
+  services.dbus.enable = true;
+
+  fonts.packages = with pkgs; [
+    nerd-fonts.fira-code
+    nerd-fonts.iosevka
+    atkinson-hyperlegible
+  ];
+}

modules/nixos/gaming.nix

@@ -0,0 +1,17 @@
+{ config, lib, pkgs, ... }:
+{
+  environment.systemPackages = with pkgs; [
+    mangohud
+    protonup-qt
+    lutris
+    bottles
+    heroic
+  ];
+  programs.steam = {
+    enable = true;
+    remotePlay.openFirewall = true;
+    localNetworkGameTransfers.openFirewall = true;
+    protontricks.enable = true;
+    gamescopeSession.enable = true;
+  };
+}

users/breakglass/default.nix

@@ -0,0 +1,17 @@
+{ pkgs, lib, ... }:
+{
+  users.users.breakglass = {
+    home =
+      if pkgs.stdenv.isLinux then
+        lib.mkDefault "/home/breakglass"
+      else if pkgs.stdenv.isDarwin then
+        lib.mkDefault "/Users/breakglass"
+      else
+        abort "Unsupported OS";
+  } // lib.optionalAttrs pkgs.stdenv.isLinux {
+    isNormalUser = true;
+    extraGroups = [ "wheel" ];
+    # NOTE: Generated with `mkpasswd`
+    hashedPassword = "$y$j9T$U7phasQYqMhxY8WXoiHL51$IHHDTreR4uZrvAC1Xusjy2M0yXkU.vLy3z6zBjZCFX.";
+  };
+}

users/jml/default.nix

@@ -0,0 +1,18 @@
+{ pkgs, lib, ... }:
+{
+  programs.fish.enable = true;
+  users.users.jml = {
+    shell = pkgs.fish;
+    home =
+      if pkgs.stdenv.isLinux then
+        lib.mkDefault "/home/jml"
+      else if pkgs.stdenv.isDarwin then
+        lib.mkDefault "/Users/jml"
+      else
+        abort "Unsupported OS";
+  } // lib.optionalAttrs pkgs.stdenv.isLinux {
+    isNormalUser = true;
+    extraGroups = [ "networkmanager" "wheel" "samba" ];
+    initialHashedPassword = "$y$j9T$R9y36VAOEudqmyVVgyYLD1$xQktVMaRP9qiARiJ6KATvyH6VAL1IKSJoPAo7k4YNZ.";
+  };
+}

users/jml/home.nix

@@ -0,0 +1,166 @@
+{ username, pkgs, lib, ... }:
+{
+  nixpkgs.config.allowUnfree = true;
+  # The following line is needed if I start using hyprland Home Manager Module
+  #wayland.windowManager.sway.systemd.enable = false;
+  # NOTE: This file contains options that resolve under home-manager.users.<username>
+  home = {
+    inherit username;
+    stateVersion = "25.05";
+    sessionVariables = {
+      EDITOR = "hx";
+    };
+    
+    homeDirectory = 
+      if pkgs.stdenv.isLinux then
+        lib.mkDefault "/home/${username}"
+      else if pkgs.stdenv.isDarwin then
+        lib.mkDefault "/Users/${username}"
+      else
+        abort "Unsupported OS";
+  };
+  home.packages = with pkgs; [ ]
+  # linux only
+  # TODO: Add a test for linux + desktop environment
+  ++ (lib.optionals pkgs.stdenv.isLinux [
+    cfspeedtest
+    helix
+    nil
+  ])
+  # linux + desktop manager
+  #++ (lib.optionals (pkgs.stdenv.isLinux && osConfig.services.desktopManager.enabled != null)
+  #[
+  #  firefox
+  #])
+  # darwin only
+  ++ (lib.optionals pkgs.stdenv.isDarwin [
+    cfspeedtest
+    ripgrep
+  ]);
+
+  programs = {
+    fish.enable = true;
+    home-manager.enable = true;
+    bat.enable = true;
+    fzf.enable = true;
+    jq.enable = true;
+    btop.enable = true;
+    zellij.enable = true;
+
+    # Matrix Chat Apps
+    element-desktop.enable = true;
+    nheko.settings = true;
+
+    # Additions from Windows
+    obsidian.enable = true;
+    obs-studio.enable = true;
+    keepassxc.enable = true;
+    wezterm.enable = true;
+    ghostty.enable = true;
+    gpg.enable = true;
+    # onedrive.enable = true;
+    # thunderbird.enable = true;
+    # vdirsyncer.enable = true;
+    nushell.enable = true;
+    helix.enable = true;
+    zoxide.enable = true;
+    fd.enable = true;
+  };
+
+  programs.starship = {
+    enable = true;
+    settings = {
+      add_newline = false;
+      line_break.disabled = true;
+      aws.disabled = true;
+      gcloud.disabled = true;
+    };
+  };
+
+  programs.firefox = {
+    enable = true;
+    policies = {
+      DontCheckDefaultBrowser = true;
+      DisableTelemetry = true;
+      DisableFirefoxStudies = true;
+      DisablePocket = true;
+      DisableFirefoxScreenshots = true;
+
+      UserMessaging = {
+        UrlbarInterventions = false;
+        SkipOnboarding = true;
+      };
+      FirefoxSuggest = {
+        WebSuggestions = false;
+        SponsoredSuggestions = false;
+        ImproveSuggest = false;
+      };
+      EnableTrackingProtection = {
+        Value = true;
+        Cryptomining = true;
+        Fingerprinting = true;
+      };
+      
+      Homepage.StartPage = "previous-session";
+      FirefoxHome = {
+        Search = true;
+        TopSites = false;
+        SponsoredTopSites = false;
+        Highlights = false;
+        Pocket = false;
+        SponsoredPocket = false;
+        Snippets = false;
+      };
+
+      Handlers.schemes.element = {
+        action = "useSystemDefault";
+        ask = false;
+      };
+
+      Preferences = {
+        "browser.urlbar.suggest.searches" = true;
+        "browser.tabs.tabMinWidth" = 75;
+
+        "browser.aboutConfig.showWarning" = false;
+        "browser.warnOnQuitShortcut" = false;
+
+        "browser.tabs.loadInBackground" = true;
+        "browser.in-content.dark-mode" = true;
+      };
+    };
+    profiles = {
+      default = {
+        id = 0;
+        name = "default";
+        isDefault = true;
+        settings =  {
+          "widget.disable-workspace-management" = true;
+        };
+        search = {
+          force = true;
+          default = "ddg";  # DuckDuckGo
+        };
+      };
+    };
+  };
+
+  programs.git = {
+    enable = true;
+    userName = "Jay Looney";
+    userEmail = "jay.m.looney@gmail.com";
+    aliases = {
+      ol = "log --oneline";
+    };
+    ignores = [ "*~" "*.swp" ];
+    extraConfig = {
+      push.default = "simple";
+      credential.helper = "cache --timeout=7200";
+      init.defaultBranch = "main";
+      log.decorate = "full";
+      log.date = "iso";
+      merge.conflictStyle = "diff3";
+    };
+  };
+
+  # services.podman.enable = true;
+}