From e8077fde966e051fc449fffcfa061c7f7edc47b0 Mon Sep 17 00:00:00 2001
From: Caroline Larimore <caroline@larimo.re>
Date: Mon, 14 Apr 2025 19:01:38 -0700
Subject: migration: finalize

---
 modules/nixos/system/default.nix              | 30 ++++++++++++++++
 modules/nixos/system/fonts/default.nix        | 38 +++++++++++++++++++++
 modules/nixos/system/impermanence/default.nix | 49 +++++++++++++++++++++++++++
 3 files changed, 117 insertions(+)
 create mode 100644 modules/nixos/system/default.nix
 create mode 100644 modules/nixos/system/fonts/default.nix
 create mode 100644 modules/nixos/system/impermanence/default.nix

(limited to 'modules/nixos/system')

diff --git a/modules/nixos/system/default.nix b/modules/nixos/system/default.nix
new file mode 100644
index 0000000..96c5654
--- /dev/null
+++ b/modules/nixos/system/default.nix
@@ -0,0 +1,30 @@
+{ options, config, lib, namespace, ... }:
+
+with lib; with lib.${namespace}; let
+  cfg = config.${namespace}.system;
+in {
+  options.${namespace}.system = with types; {
+    hostname = mkOption {
+      type = strMatching "^$|^[[:alnum:]]([[:alnum:]_-]{0,61}[[:alnum:]])?$";
+    };
+
+    id = mkOption {
+      default = null;
+      type = nullOr str;
+    };
+
+    timezone = mkOption {
+      default = "America/Los_Angeles";
+      type = nullOr str;
+    };
+  };
+
+  config = {
+    nix.settings.experimental-features = [ "nix-command" "flakes" ];
+  
+    networking.hostName = cfg.hostname;
+    networking.hostId = cfg.id;
+
+    time.timeZone = cfg.timezone;
+  };
+}
diff --git a/modules/nixos/system/fonts/default.nix b/modules/nixos/system/fonts/default.nix
new file mode 100644
index 0000000..c510679
--- /dev/null
+++ b/modules/nixos/system/fonts/default.nix
@@ -0,0 +1,38 @@
+{ options, config, lib, pkgs, namespace, ... }:
+
+with lib; with lib.${namespace}; let
+  cfg = config.${namespace}.system.fonts;
+in {
+  options.${namespace}.system.fonts = with types; {
+    enable = mkEnableOption "fonts";
+    nerdfonts = mkEnableOption "nerdfonts";
+    extra = mkOption {
+      type = listOf package;
+      default = [];
+      description = ''
+        additional fonts to install
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    fonts = {
+      packages = with pkgs; [
+        noto-fonts
+        noto-fonts-cjk-sans
+        noto-fonts-cjk-serif
+        noto-fonts-emoji
+      ] ++ (
+        optionals cfg.nerdfonts (
+          builtins.filter lib.attrsets.isDerivation (builtins.attrValues pkgs.nerd-fonts)
+        )
+      ) ++ cfg.extra;
+
+      fontconfig.defaultFonts = {
+        monospace = [ "CaskaydiaMono Nerd Font" ];
+        sansSerif = [ "DejaVu Sans" "Noto Sans CJK JP" "Noto Sans" ];
+        serif = [ "DejaVu Serif" "Noto Serif CJK JP" "Noto Serif" ];
+      };
+    };
+  };
+}
diff --git a/modules/nixos/system/impermanence/default.nix b/modules/nixos/system/impermanence/default.nix
new file mode 100644
index 0000000..b82579b
--- /dev/null
+++ b/modules/nixos/system/impermanence/default.nix
@@ -0,0 +1,49 @@
+{ options, config, lib, namespace, ... }:
+
+with lib; with lib.${namespace}; let
+  cfg = config.${namespace}.system.impermanence;
+in {
+  options.${namespace}.system.impermanence = with types; {
+    enable = mkEnableOption "root impermanence";
+
+    location = mkOption {
+      type = str;
+      default = "/persist/system";
+    };
+
+    #TODO: multi-user support
+    home = {
+      enable = mkEnableOption "home impermanence";
+
+      location = mkOption {
+        type = str;
+        default = "/persist/home";
+      };
+
+      secure.location = mkOption {
+        type = str;
+        default = "/persist/secure/home";
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    programs.fuse.userAllowOther = true;
+
+    environment.persistence.${cfg.location} = {
+      hideMounts = true;
+
+      directories = [
+        "/etc/nixos"
+        "/var/log"
+        "/var/lib/nixos"
+        "/var/lib/systemd/coredump"
+        # "/var/lib/bluetooth"
+      ];
+      
+      files = [
+        "/etc/machine-id"
+      ];
+    };
+  };
+}
-- 
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