feat: build a much more minimal config for installing

flake.nix

@@ -131,6 +131,7 @@
         hosts
         microvmConfigurations
         nixosConfigurations
+        nixosConfigurationsMinimal
         ;
 
       # All nixosSystem instanciations are collected here, so that we can refer
@@ -141,11 +142,13 @@
 
       # For each true NixOS system, we want to expose an installer package that
       # can be used to do the initial setup on the node from a live environment.
+      # We use the minimal sibling configuration to reduce the amount of stuff
+      # we have to copy to the live system.
       inherit
         (foldl' recursiveUpdate {}
           (mapAttrsToList
             (import ./nix/generate-installer-package.nix inputs)
-            self.nixosConfigurations))
+            self.nixosConfigurationsMinimal))
         packages
         ;
     }

hosts/kroma/default.nix

@@ -1,4 +1,10 @@
-{inputs, ...}: {
+{
+  inputs,
+  lib,
+  minimal,
+  ...
+}:
+{
   imports = [
     inputs.nixos-hardware.nixosModules.common-cpu-amd
     inputs.nixos-hardware.nixosModules.common-cpu-amd-pstate
@@ -25,15 +31,17 @@
   ];
 
   boot.initrd.availableKernelModules = ["xhci_pci" "ahci" "nvme" "usbhid" "usb_storage" "sd_mod"];
-  boot.binfmt.emulatedSystems = ["aarch64-linux"];
-  graphical.gaming.enable = true;
-
+}
+// lib.optionalAttrs (!minimal) {
   # TODO goodbye once -sk keys.
   environment.shellInit = ''
     gpg-connect-agent /bye
     export SSH_AUTH_SOCK=$(gpgconf --list-dirs agent-ssh-socket)
   '';
 
+  boot.binfmt.emulatedSystems = ["aarch64-linux"];
+  graphical.gaming.enable = true;
+
   stylix.fonts.sizes = {
     #desktop = 20;
     applications = 10;

modules/config/nix.nix

@@ -44,18 +44,12 @@
       options = "--delete-older-than 90d";
     };
     # Define global flakes for this system
-    registry = {
+    registry = rec {
       nixpkgs.flake = inputs.nixpkgs;
-      p.flake = inputs.nixpkgs;
-      pkgs.flake = inputs.nixpkgs;
+      p = nixpkgs;
       templates.flake = inputs.templates;
     };
   };
 
-  system = {
-    extraSystemBuilderCmds = ''
-      ln -sv ${pkgs.path} $out/nixpkgs
-    '';
-    stateVersion = "23.11";
-  };
+  system.stateVersion = "23.11";
 }

modules/optional/dev/default.nix

@@ -1,8 +1,11 @@
 {
   inputs,
   pkgs,
+  lib,
+  minimal,
   ...
-}: {
+}:
+lib.optionalAttrs (!minimal) {
   imports = [
     inputs.nixseparatedebuginfod.nixosModules.default
     ./documentation.nix

modules/optional/graphical/default.nix

@@ -2,14 +2,24 @@
   config,
   inputs,
   lib,
+  minimal,
   ...
 }: let
   inherit
     (lib)
     mkOption
     types
+    optionalAttrs
     ;
-in {
+in
+  {
+    options.graphical.gaming.enable = mkOption {
+      description = "Enables gaming on this machine and will add a lot of gaming related packages and configuration.";
+      default = false;
+      type = types.bool;
+    };
+  }
+  // optionalAttrs (!minimal) {
     imports = [
       inputs.stylix.nixosModules.stylix
 
@@ -19,12 +29,6 @@ in {
       ./xserver.nix
     ];
 
-  options.graphical.gaming.enable = mkOption {
-    description = "Enables gaming on this machine and will add a lot of gaming related packages and configuration.";
-    default = false;
-    type = types.bool;
-  };
-
     config = {
       # Needed for gtk
       programs.dconf.enable = true;
@@ -53,4 +57,4 @@ in {
         };
       };
     };
-}
+  }

modules/optional/hardware/nvidia.nix

@@ -1,8 +1,10 @@
 {
   lib,
+  minimal,
   pkgs,
   ...
-}: {
+}:
+lib.optionalAttrs (!minimal) {
   boot.blacklistedKernelModules = ["nouveau"];
   services.xserver.videoDrivers = lib.mkForce ["nvidia"];
 

modules/optional/sound.nix

@@ -1,8 +1,10 @@
 {
   lib,
+  minimal,
   pkgs,
   ...
-}: {
+}:
+lib.optionalAttrs (!minimal) {
   # Helpful utilities:
   # Show pipewire devices and application overview or specifics
   # > wpctl status; wpctl inspect <id>

modules/repo/meta.nix

@@ -5,19 +5,18 @@
 }: let
   inherit
     (lib)
-    mdDoc
     mkOption
     types
     ;
 in {
   options.node = {
     name = mkOption {
-      description = mdDoc "A unique name for this node (host) in the repository. Defines the default hostname, but this can be overwritten.";
+      description = "A unique name for this node (host) in the repository. Defines the default hostname, but this can be overwritten.";
       type = types.str;
     };
 
     secretsDir = mkOption {
-      description = mdDoc "Path to the secrets directory for this node.";
+      description = "Path to the secrets directory for this node.";
       type = types.path;
     };
   };

nix/hosts.nix

@@ -12,15 +12,15 @@ inputs: let
     ;
 
   # Creates a new nixosSystem with the correct specialArgs, pkgs and name definition
-  mkHost = name: system: let
-    pkgs = self.pkgs.${system};
+  mkHost = {minimal}: name: hostCfg: let
+    pkgs = self.pkgs.${hostCfg.system};
   in
     nixosSystem {
       specialArgs = {
         # Use the correct instance lib that has our overlays
         inherit (pkgs) lib;
         inherit (self) nodes;
-        inherit inputs;
+        inherit inputs minimal;
       };
       modules = [
         {
@@ -28,7 +28,7 @@ inputs: let
           # inputs.nixpkgs.nixosModules.readOnlyPkgs, since some nixosModules
           # like nixseparatedebuginfod depend on adding packages via nixpkgs.overlays.
           # So we just mimic the options and overlays defined by the passed pkgs set.
-          nixpkgs.hostPlatform = system;
+          nixpkgs.hostPlatform = hostCfg.system;
           nixpkgs.overlays = pkgs.overlays;
           nixpkgs.config = pkgs.config;
           node.name = name;
@@ -45,7 +45,8 @@ inputs: let
   # Get all hosts of type "nixos"
   nixosHosts = filterAttrs (_: x: x.type == "nixos") hosts;
   # Process each nixosHosts declaration and generatea nixosSystem definitions
-  nixosConfigurations = flip mapAttrs nixosHosts (name: hostCfg: mkHost name hostCfg.system);
+  nixosConfigurations = flip mapAttrs nixosHosts (mkHost {minimal = false;});
+  nixosConfigurationsMinimal = flip mapAttrs nixosHosts (mkHost {minimal = true;});
 
   # True NixOS nodes can define additional microvms (guest nodes) that are built
   # together with the true host. We collect all defined microvm nodes
@@ -59,5 +60,6 @@ in {
     hosts
     microvmConfigurations
     nixosConfigurations
+    nixosConfigurationsMinimal
     ;
 }

users/myuser/default.nix

@@ -1,10 +1,13 @@
 {
   config,
+  lib,
   pkgs,
+  minimal,
   ...
 }: let
   myuser = config.repo.secrets.global.myuser.name;
-in {
+in
+  lib.optionalAttrs (!minimal) {
     users.groups.${myuser}.gid = config.users.users.${myuser}.uid;
     users.users.${myuser} = {
       uid = 1000;
@@ -51,4 +54,4 @@ in {
         username = config.users.users.${myuser}.name;
       };
     };
-}
+  }

users/myuser/graphical/default.nix

@@ -37,6 +37,9 @@
       zathura
     ];
 
+    # TODO audible bell in qt pinentry drives me nuts
+    # TODO secureboot -> use pam yubikey login
+    # TODO keyboard stays lit on poweroff -> add systemd service to disable it on shutdown
     # TODO on neogit close do neotree update
     # TODO kitty terminfo missing with ssh root@localhost
     # TODO nix repl cltr+del doesnt work