Revert "nixosModules,pkgs: remove installer. clanModules: init installer module"

This reverts commit 29a7f0312b.

pkgs/flake-module.nix

@@ -5,6 +5,7 @@
     ./clan-cli/flake-module.nix
     ./clan-app/flake-module.nix
     ./clan-vm-manager/flake-module.nix
+    ./installer/flake-module.nix
     ./schemas/flake-module.nix
     ./webview-ui/flake-module.nix
     ./distro-packages/flake-module.nix

pkgs/installer/base64.nix

@@ -0,0 +1,60 @@
+{ lib, ... }:
+{
+  toBase64 =
+    text:
+    let
+      inherit (lib)
+        sublist
+        mod
+        stringToCharacters
+        concatMapStrings
+        ;
+      inherit (lib.strings) charToInt;
+      inherit (builtins)
+        substring
+        foldl'
+        genList
+        elemAt
+        length
+        concatStringsSep
+        stringLength
+        ;
+      lookup = stringToCharacters "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+      sliceN =
+        size: list: n:
+        sublist (n * size) size list;
+      pows = [
+        (64 * 64 * 64)
+        (64 * 64)
+        64
+        1
+      ];
+      intSextets = i: map (j: mod (i / j) 64) pows;
+      compose =
+        f: g: x:
+        f (g x);
+      intToChar = elemAt lookup;
+      convertTripletInt = sliceInt: concatMapStrings intToChar (intSextets sliceInt);
+      sliceToInt = foldl' (acc: val: acc * 256 + val) 0;
+      convertTriplet = compose convertTripletInt sliceToInt;
+      join = concatStringsSep "";
+      convertLastSlice =
+        slice:
+        let
+          len = length slice;
+        in
+        if len == 1 then
+          (substring 0 2 (convertTripletInt ((sliceToInt slice) * 256 * 256))) + "=="
+        else if len == 2 then
+          (substring 0 3 (convertTripletInt ((sliceToInt slice) * 256))) + "="
+        else
+          "";
+      len = stringLength text;
+      nFullSlices = len / 3;
+      bytes = map charToInt (stringToCharacters text);
+      tripletAt = sliceN 3 bytes;
+      head = genList (compose convertTriplet tripletAt) nFullSlices;
+      tail = convertLastSlice (tripletAt nFullSlices);
+    in
+    join (head ++ [ tail ]);
+}

pkgs/installer/flake-module.nix

@@ -0,0 +1,71 @@
+{ self, lib, ... }:
+
+let
+
+  flashInstallerModule =
+    { config, ... }:
+    {
+      imports = [
+        ./iwd.nix
+        self.nixosModules.installer
+        # Allow to download pre-build binaries from our nix caches
+        self.clanModules.trusted-nix-caches
+      ];
+
+      system.stateVersion = config.system.nixos.version;
+      nixpkgs.pkgs = self.inputs.nixpkgs.legacyPackages.x86_64-linux;
+    }
+    // flashDiskoConfig;
+
+  # Important: The partition names need to be different to the clan install
+  flashDiskoConfig = {
+    boot.loader.grub.efiSupport = lib.mkDefault true;
+    boot.loader.grub.efiInstallAsRemovable = lib.mkDefault true;
+    disko.devices = {
+      disk = {
+        main = {
+          type = "disk";
+          device = lib.mkDefault "/dev/null";
+          content = {
+            type = "gpt";
+            partitions = {
+              installer-boot = {
+                size = "1M";
+                type = "EF02"; # for grub MBR
+                priority = 1;
+              };
+              installer-ESP = {
+                size = "512M";
+                type = "EF00";
+                content = {
+                  type = "filesystem";
+                  format = "vfat";
+                  mountpoint = "/boot";
+                };
+              };
+              installer-root = {
+                size = "100%";
+                content = {
+                  type = "filesystem";
+                  format = "ext4";
+                  mountpoint = "/";
+                };
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+in
+{
+  clan = {
+    # To directly flash the installer to a disk, use the following command:
+    # $ clan flash flash-installer --disk main /dev/sdX --yes
+    # This will include your ssh public keys in the installer.
+    machines.flash-installer = {
+      imports = [ flashInstallerModule ];
+      boot.loader.grub.enable = lib.mkDefault true;
+    };
+  };
+}

pkgs/installer/iwd.nix

@@ -0,0 +1,67 @@
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}:
+
+let
+  cfg = config.clan.iwd;
+  toBase64 = (pkgs.callPackage ./base64.nix { inherit lib; }).toBase64;
+  wifi_config = password: ''
+    [Security]
+      Passphrase=${password}
+  '';
+in
+{
+  options.clan.iwd = {
+    networks = lib.mkOption {
+      type = lib.types.attrsOf (
+        lib.types.submodule (
+          { name, ... }:
+          {
+            options = {
+              ssid = lib.mkOption {
+                type = lib.types.strMatching "^[a-zA-Z0-9._-]+$";
+                default = name;
+                description = "The name of the wifi network";
+              };
+              password = lib.mkOption {
+                type = lib.types.str;
+                description = "The password of the wifi network";
+              };
+            };
+          }
+        )
+      );
+      default = { };
+      description = "Wifi networks to predefine";
+    };
+  };
+  config = lib.mkMerge [
+    (lib.mkIf (cfg.networks != { }) {
+      # Systemd tmpfiles rule to create /var/lib/iwd/example.psk file
+      systemd.tmpfiles.rules = lib.mapAttrsToList (
+        _: value:
+        "f+~ /var/lib/iwd/${value.ssid}.psk 0600 root root - ${toBase64 (wifi_config value.password)}"
+      ) cfg.networks;
+
+    })
+    {
+      # disable wpa supplicant
+      networking.wireless.enable = false;
+
+      # Use iwd instead of wpa_supplicant. It has a user friendly CLI
+      networking.wireless.iwd = {
+        enable = true;
+        settings = {
+          Network = {
+            EnableIPv6 = true;
+            RoutePriorityOffset = 300;
+          };
+          Settings.AutoConnect = true;
+        };
+      };
+    }
+  ];
+}