better machine conf, rework key/machines management

machines/lenovo/configuration.nix

@@ -0,0 +1,180 @@
+{
+  config,
+  lib,
+  pkgs,
+  modulesPath,
+  machine,
+  ...
+}: {
+  age.secrets = {
+    secret0.file = ../../secrets/secret0.age;
+    secret1.file = ../../secrets/secret1.age;
+  };
+  boot.loader = {
+    efi.canTouchEfiVariables = true;
+    systemd-boot.enable = true;
+  };
+  environment.persistence."/nix/persist" = {
+    enable = true;
+    hideMounts = true;
+    directories = [
+      "/var/log"
+      "/var/lib/bluetooth"
+      "/var/lib/nixos"
+      "/var/lib/systemd/coredump"
+      "/etc/NetworkManager/system-connections"
+      "/etc/ssh"
+    ];
+    files = [
+      "/etc/machine-id"
+      "/etc/ly/save.txt"
+    ];
+    users."andromeda" = {
+      directories = [
+        ".backups"
+        ".local/share/Anki2"
+        ".local/share/chat.fluffy.fluffychat"
+        ".local/share/zoxide"
+        ".ssh"
+        "conf"
+        "Downloads"
+        "pp"
+      ];
+      files = [
+        ".bash_history"
+        ".brush_history"
+      ];
+    };
+    users."mtgmonkey" = {
+      directories = [
+        ".local/share/zoxide"
+        ".ssh"
+      ];
+      files = [
+        ".bash_history"
+        ".brush_history"
+      ];
+    };
+  };
+  hardware.bluetooth = {
+    enable = true;
+    powerOnBoot = true;
+  };
+  i18n.defaultLocale = "de_DE.UTF-8";
+  networking = {
+    dhcpcd.enable = true;
+    firewall.enable = true;
+    hostName = machine.hostname;
+    networkmanager.enable = true;
+  };
+  nix.settings.experimental-features = [
+    "nix-command"
+    "flakes"
+  ];
+  nixpkgs.config.allowUnfreePredicate = pkg:
+    builtins.elem (lib.getName pkg) [
+      "steam"
+      "steam-original"
+      "steam-unwrapped"
+      "steam-run"
+    ];
+  programs = {
+    noshell.enable = true;
+    steam.enable = true;
+    sway.enable = true;
+  };
+  services = {
+    blueman.enable = true;
+    displayManager = {
+      enable = true;
+      ly.enable = true;
+    };
+    libinput.enable = true;
+    openssh.enable = true;
+    printing.enable = true;
+  };
+  system.stateVersion = "26.05";
+  time.timeZone = "Europe/Berlin";
+  users.users."andromeda" = {
+    isNormalUser = true;
+    description = "andromeda";
+    hashedPasswordFile = builtins.toString config.age.secrets.secret0.path;
+    extraGroups = [
+      "networkmanager"
+      "wheel"
+    ];
+  };
+  users.users."mtgmonkey" = {
+    isNormalUser = true;
+    description = "mtgmonkey";
+    hashedPasswordFile = builtins.toString config.age.secrets.secret1.path;
+    extraGroups = [
+      "networkmanager"
+      "wheel"
+    ];
+  };
+  imports = [
+    (modulesPath + "/installer/scan/not-detected.nix")
+  ];
+
+  boot.initrd.availableKernelModules = ["xhci_pci" "nvme" "sdhci_pci"];
+  boot.initrd.kernelModules = [];
+  boot.kernelModules = ["kvm-intel"];
+  boot.extraModulePackages = [];
+
+  fileSystems."/" = {
+    #device = "none";
+    #fsType = "tmpfs";
+    #options = ["defaults" "size=60%" "mode=755"];
+    device = "/dev/disk/by-uuid/5455cfb4-0efd-4f55-b496-d2cab3f419b7";
+    fsType = "btrfs";
+    options = ["subvol=root"];
+  };
+
+  boot.initrd.postResumeCommands = lib.mkAfter ''
+    mkdir /btrfs_tmp
+    mount ${config.fileSystems."/".device} /btrfs_tmp
+    if [[ -e /btrfs_tmp/root ]]; then
+      mkdir -p /btrfs_tmp/old_roots
+      timestamp=$(date --date="@$(stat -c %Y /btrfs_tmp/root)" "+%Y-%m-%-d_%H:$M:%S")
+      mv /btrfs_tmp/root "/btrfs_tmp/old_roots/$timestamp"
+    fi
+
+    delete_subvolume_recursively() {
+      IFS=$'\n'
+      for i in $(btrfs subvolume list -o "$1" | cut -f 9- -d ' '); do
+        delete_subvolume_recursively "/btrfs_tmp/$i"
+      done
+      btrfs subvolume delete "$1"
+    }
+
+    for i in $(find /btrfs_tmp/old_roots/ -maxdepth 1 -mtime +30); do
+      delete_subvolume_recursively "$i"
+    done
+
+    btrfs subvolume create /btrfs_tmp/root
+    mkdir /btrfs_tmp/root/nix
+    mkdir /btrfs_tmp/root/etc
+    mount ${config.fileSystems."/nix".device} /btrfs_tmp/root/nix
+    cp /btrfs_tmp/root/nix/persist/etc/ssh /btrfs_tmp/root/etc/ssh -r
+    umount /btrfs_tmp/root/nix
+    rm -r /btrfs_tmp/root/nix
+    umount /btrfs_tmp
+  '';
+
+  fileSystems."/nix" = {
+    device = "/dev/disk/by-uuid/0e586651-36f4-42b0-99b3-3f0704a894d6";
+    fsType = "btrfs";
+  };
+
+  fileSystems."/boot" = {
+    device = "/dev/disk/by-uuid/F425-55BA";
+    fsType = "vfat";
+    options = ["fmask=0022" "dmask=0022"];
+  };
+
+  swapDevices = [];
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}