refactor(flake)!: export packages using a flake module

Also stop passing `outputs` around, prefer `inputs.self`
Also put all `auto_` in `readOnly` `internal` options
- `autoModules`, `autoConfigurations` and `autoPackages`
Do not export packages as overlay (causes an infinite recursion)
- this is documented on the two places it has effect on
-- in `./overlays/default.nix` and `./modules/flake/configurations.nix`
-- in `autoConfigurations` we manually extend `pkgs` with the flake packages
Allow packages to say what `systems` they are compatible with
- See `./pkgs/swww/systems.nix` - disabled for all systems
- See `./pkgs/pngpaste/systems.nix` - enabled only for `darwin` targets

hosts/nixos/x86_64-linux/__template__/configuration.nix

@@ -1,11 +1,11 @@
 # This is your system's configuration file.
 # Use this to configure your system environment (it replaces /etc/nixos/configuration.nix)
 
-{ inputs, outputs, lib, pkgs, config, ... }: {
+{ inputs, lib, pkgs, config, ... }: {
   # You can import other NixOS modules here
   imports = [
     # If you want to use modules your own flake exports (from modules/nixos):
-    # outputs.nixosModules.example
+    # inputs.self.nixosModules.example
 
     # Or modules from other flakes (such as nixos-hardware):
     # inputs.hardware.nixosModules.common-cpu-amd
@@ -22,8 +22,8 @@
     # You can add overlays here
     overlays = [
       # If you want to use overlays your own flake exports (from overlays dir):
-      # outputs.overlays.modifications
-      # outputs.overlays.additions
+      # inputs.self.overlays.modifications
+      # inputs.self.overlays.additions
 
       # Or overlays exported from other flakes:
       # neovim-nightly-overlay.overlays.default

hosts/nixos/x86_64-linux/homix/configuration.nix

@@ -2,7 +2,7 @@
 # your system.  Help is available in the configuration.nix(5) man page
 # and in the NixOS manual (accessible by running ‘nixos-help’).
 
-{ inputs, outputs, lib, pkgs, config, ... }:
+{ inputs, lib, pkgs, config, ... }:
 
 {
   imports = [

hosts/nixos/x86_64-linux/homix/home/reo101.nix

@@ -1,4 +1,4 @@
-{ inputs, outputs, lib, pkgs, config, ... }:
+{ inputs, lib, pkgs, config, ... }:
 
 {
   imports = [

hosts/nixos/x86_64-linux/jeeves/configuration.nix

@@ -1,4 +1,4 @@
-{ inputs, outputs, lib, pkgs, config, ... }:
+{ inputs, lib, pkgs, config, ... }:
 {
   imports = [
     inputs.hardware.nixosModules.common-cpu-amd

hosts/nixos/x86_64-linux/jeeves/disko.nix

@@ -1,4 +1,4 @@
-{ inputs, outputs, lib, pkgs, config, ... }:
+{ inputs, lib, pkgs, config, ... }:
 {
   imports = [
     inputs.disko.nixosModules.disko

hosts/nixos/x86_64-linux/jeeves/home-assistant/default.nix

@@ -1,4 +1,4 @@
-{ inputs, outputs, lib, pkgs, config, ... }:
+{ inputs, lib, pkgs, config, ... }:
 {
   environment.systemPackages = with pkgs; [
   ];

hosts/nixos/x86_64-linux/jeeves/home/jeeves.nix

@@ -1,4 +1,4 @@
-{ inputs, outputs, lib, pkgs, config, ... }:
+{ inputs, lib, pkgs, config, ... }:
 
 {
   imports = [

hosts/nixos/x86_64-linux/jeeves/network.nix

@@ -1,4 +1,4 @@
-{ inputs, outputs, lib, pkgs, config, ... }:
+{ inputs, lib, pkgs, config, ... }:
 {
   environment.systemPackages = with pkgs; [
   ];

hosts/nixos/x86_64-linux/jeeves/nginx.nix

@@ -1,4 +1,4 @@
-{ inputs, outputs, lib, pkgs, config, ... }:
+{ inputs, lib, pkgs, config, ... }:
 
 {
   # age.secrets."nextcloud.adminpass" = {

hosts/nixos/x86_64-linux/jeeves/ollama.nix

@@ -1,4 +1,4 @@
-{ inputs, outputs, lib, pkgs, config, ... }:
+{ inputs, lib, pkgs, config, ... }:
 {
   networking.firewall.allowedTCPPorts = [11434];
 

hosts/nixos/x86_64-linux/jeeves/wireguard.nix

@@ -1,4 +1,4 @@
-{ inputs, outputs, lib, pkgs, config, ... }:
+{ inputs, lib, pkgs, config, ... }:
 {
   environment.systemPackages = with pkgs; [
     wireguard-tools