First commit

OLD CONFIGS/nix_new/hosts/traveldroid/configuration.nix

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+{ config, pkgs, lib, ... }:
+
+{
+  imports = [
+    ../../modules/nixos/base.nix
+    ./hardware-configuration.nix
+    ./graphics-effects.nix
+    ./hardware.nix
+    ./disk.nix
+  ];
+
+  # Bootloader
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  system.stateVersion = "25.11";
+
+  # Basic system identity / networking
+  networking.hostName = "traveldroid";
+
+  # Keyboard (Xwayland / X11 apps)
+  services.xserver.xkb = {
+    layout = "us";
+    variant = "";
+  };
+
+  networking.networkmanager.enable = false;
+  systemd.services."NetworkManager-wait-online".enable = false;
+
+
+  # Enable flakes
+  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+}

OLD CONFIGS/nix_new/hosts/traveldroid/disk.nix

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+{ ... }: { }

OLD CONFIGS/nix_new/hosts/traveldroid/graphics-effects.nix

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+{ config, lib, pkgs, ... }:
+
+# ====================== WALLPAPER=========================
+
+let
+  # Source of wallpapers in your repo (as you specified)
+  srcDir = "~/nixos/files/wallpapers/picture";
+  # Note: this is interpreted as a shell-style KEY=VALUE file.
+  confFile = "~/nixos/files/conf/wallpaper/wallpaper.conf";
+  setWallpaperScript = pkgs.writeShellScript "set-hourly-wallpaper" ''
+    set -euo pipefail
+
+    # --- Defaults (can be overridden by wallpaper.conf) ---
+    TRANSITION_TYPE="fade"     # e.g. fade, wipe, simple, any
+    TRANSITION_DURATION="2"    # seconds (can be decimals)
+    TRANSITION_FPS="60"        # frames per second
+    SRC_DIR="${srcDir}"
+
+    # Load overrides (shell KEY=VALUE)
+    if [ -f "${confFile}" ]; then
+      # shellcheck disable=SC1090
+      . "${confFile}"
+    fi
+
+    DEST_DIR="$HOME/Pictures/Wallpapers"
+    mkdir -p "$DEST_DIR"
+
+    # Copy source wallpapers into user's Pictures/Wallpapers
+    # -r recursive, -u update if newer
+    # If the folder is empty or missing, don't crash the session.
+    if [ -d "$SRC_DIR" ]; then
+      cp -ru "$SRC_DIR"/. "$DEST_DIR"/ 2>/dev/null || true
+    fi
+
+    # Pick a random image from DEST_DIR
+    img="$(
+      find "$DEST_DIR" -type f \
+        \( -iname '*.jpg' -o -iname '*.jpeg' -o -iname '*.png' -o -iname '*.webp' \) \
+        | shuf -n 1
+    )"
+
+    [ -n "''${img:-}" ] || exit 0
+
+    # Ensure swww daemon is running (per-user)
+    if ! ${pkgs.swww}/bin/swww query >/dev/null 2>&1; then
+      ${pkgs.swww}/bin/swww-daemon >/dev/null 2>&1 &
+      sleep 0.4
+    fi
+
+    # Smooth transition wallpaper set
+    exec ${pkgs.swww}/bin/swww img "$img" \
+      --transition-type "''${TRANSITION_TYPE}" \
+      --transition-duration "''${TRANSITION_DURATION}" \
+      --transition-fps "''${TRANSITION_FPS}"
+  '';
+in
+{
+  # Packages needed by the script + swww
+  environment.systemPackages = with pkgs; [
+    swww
+    bash
+    coreutils
+    findutils
+    util-linux
+  ];
+
+  # Run for ANY logged-in user via systemd user units
+  # (each user session has its own systemd --user instance)
+  systemd.user.services.wallpaper-rotate = {
+    description = "Copy wallpapers to ~/Pictures/Wallpapers and set a random wallpaper with transition";
+    serviceConfig = {
+      Type = "oneshot";
+      ExecStart = "${setWallpaperScript}";
+    };
+  };
+
+  systemd.user.timers.wallpaper-rotate = {
+    description = "Hourly wallpaper rotation timer";
+    wantedBy = [ "timers.target" ];
+    timerConfig = {
+      OnBootSec = "2min";
+      OnUnitActiveSec = "1h";
+      RandomizedDelaySec = "5min";
+      Unit = "wallpaper-rotate.service";
+    };
+  };
+}

OLD CONFIGS/nix_new/hosts/traveldroid/hardware-configuration.nix

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+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "nvme" "usb_storage" "sd_mod" "rtsx_usb_sdmmc" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/f08fc2a7-0b2b-4cbb-a65a-8b6e7ee4cec9";
+      fsType = "btrfs";
+      options = [ "subvol=@" ];
+    };
+
+  fileSystems."/home" =
+    { device = "/dev/disk/by-uuid/f08fc2a7-0b2b-4cbb-a65a-8b6e7ee4cec9";
+      fsType = "btrfs";
+      options = [ "subvol=@home" ];
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/25C1-E4F2";
+      fsType = "vfat";
+      options = [ "fmask=0077" "dmask=0077" ];
+    };
+
+  swapDevices =
+    [ { device = "/dev/disk/by-uuid/f771a317-26a2-4524-a458-42ba22b29e67"; }
+    ];
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}

OLD CONFIGS/nix_new/hosts/traveldroid/hardware.nix

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+{ ... }: { }

OLD CONFIGS/nix_new/hosts/traveldroid/wallpaper-rotator.nix

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+{ config, pkgs, lib, ... }:
+
+let
+  cfg = config.dataPro.wallpaper; # custom namespace
+
+  # Where we keep a runtime-editable config for the user.
+  runtimeConfDir = "${config.xdg.configHome}/wallpaper";
+  runtimeConfPath = "${runtimeConfDir}/wallpaper.conf";
+
+  rotateScript = pkgs.writeShellScript "wallpaper-rotate" ''
+    set -euo pipefail
+
+    export PATH=${lib.makeBinPath [
+      pkgs.coreutils
+      pkgs.findutils
+      pkgs.gnugrep
+      pkgs.gawk
+      pkgs.util-linux
+      pkgs.swww
+    ]}
+
+    # Defaults (can be overridden by wallpaper.conf)
+    SOURCE_DIR="${cfg.sourceDir}"
+    TARGET_DIR="${cfg.targetDir}"
+    ROTATION_DIR="${cfg.rotationDir}"
+    TRANSITION_TYPE="fade"
+    TRANSITION_DURATION="2.5"
+    TRANSITION_FPS="60"
+    PICK_MODE="random"   # random | sequential
+    LAST_FILE="${config.xdg.stateHome}/wallpaper/last.txt"
+
+    # Load user config if present (KEY=VALUE lines; '#' comments allowed)
+    if [ -f "${runtimeConfPath}" ]; then
+      # shellcheck disable=SC1090
+      . "${runtimeConfPath}"
+    fi
+
+    mkdir -p "$TARGET_DIR" "${config.xdg.stateHome}/wallpaper"
+
+    # Ensure swww-daemon is running
+    if ! pgrep -x swww-daemon >/dev/null 2>&1; then
+      swww-daemon >/dev/null 2>&1 &
+      sleep 0.3
+    fi
+
+    # Pick image
+    if [ ! -d "$ROTATION_DIR" ]; then
+      echo "Rotation directory does not exist: $ROTATION_DIR" >&2
+      exit 0
+    fi
+
+    # Build list once per run
+    mapfile -d '' -t imgs < <(
+      find "$ROTATION_DIR" -type f \
+        \( -iname '*.jpg' -o -iname '*.jpeg' -o -iname '*.png' -o -iname '*.webp' \) \
+        -print0
+    )
+
+    if [ "${#imgs[@]}" -eq 0 ]; then
+      echo "No images found in: $ROTATION_DIR" >&2
+      exit 0
+    fi
+
+    img=""
+    if [ "$PICK_MODE" = "sequential" ]; then
+      last=""
+      if [ -f "$LAST_FILE" ]; then
+        last="$(cat "$LAST_FILE" || true)"
+      fi
+
+      # Sort for stable order
+      IFS=$'\n' sorted=($(printf '%s\n' "${imgs[@]}" | sort))
+      unset IFS
+
+      # Find next after last
+      next=""
+      found_last=0
+      for f in "${sorted[@]}"; do
+        if [ "$found_last" -eq 1 ]; then
+          next="$f"
+          break
+        fi
+        if [ "$f" = "$last" ]; then
+          found_last=1
+        fi
+      done
+      if [ -z "$next" ]; then
+        next="${sorted[0]}"
+      fi
+      img="$next"
+      printf '%s' "$img" > "$LAST_FILE"
+    else
+      # random
+      img="$(printf '%s\0' "${imgs[@]}" | shuf -z -n 1 | tr -d '\0')"
+    fi
+
+    # Smooth transition wallpaper set
+    swww img "$img" \
+      --transition-type "$TRANSITION_TYPE" \
+      --transition-duration "$TRANSITION_DURATION" \
+      --transition-fps "$TRANSITION_FPS"
+  '';
+in
+{
+  options.dataPro.wallpaper = {
+    enable = lib.mkEnableOption "Hourly wallpaper rotation with swww (Hyprland/Wayland)";
+
+    # You asked to make this easy to change:
+    sourceDir = lib.mkOption {
+      type = lib.types.str;
+      default = "${config.home.homeDirectory}/nixos/files/wallpaper/picture";
+      description = "Folder containing wallpapers to rotate (source of truth).";
+    };
+
+    targetDir = lib.mkOption {
+      type = lib.types.str;
+      default = "${config.home.homeDirectory}/wallpaper";
+      description = "Folder in the user's home where wallpapers are copied to.";
+    };
+
+    rotationDir = lib.mkOption {
+      type = lib.types.str;
+      default = "${config.home.homeDirectory}/wallpaper/picture";
+      description = "Folder used by the rotator to pick wallpapers from (usually inside targetDir).";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    home.packages = [
+      pkgs.swww
+      pkgs.coreutils
+      pkgs.findutils
+      pkgs.gnugrep
+      pkgs.gawk
+      pkgs.util-linux
+    ];
+
+    # Copy wallpapers from sourceDir into rotationDir (real copy) at activation.
+    home.activation.wallpaperCopy = lib.hm.dag.entryAfter [ "writeBoundary" ] ''
+      set -euo pipefail
+      mkdir -p "${cfg.targetDir}" "${cfg.rotationDir}"
+
+      if [ -d "${cfg.sourceDir}" ]; then
+        # Copy source into rotationDir (contents only).
+        cp -a "${cfg.sourceDir}/." "${cfg.rotationDir}/"
+      fi
+    '';
+
+    # Install a runtime-editable config into ~/.config/wallpaper/wallpaper.conf
+    # First-time copy from repo if present; then never overwrite if user edited it.
+    home.activation.wallpaperConf = lib.hm.dag.entryAfter [ "writeBoundary" ] ''
+      set -euo pipefail
+      mkdir -p "${runtimeConfDir}"
+
+      if [ ! -f "${runtimeConfPath}" ]; then
+        if [ -f "${config.home.homeDirectory}/nixos/files/conf/wallpaper/wallpaper.conf" ]; then
+          cp -a "${config.home.homeDirectory}/nixos/files/conf/wallpaper/wallpaper.conf" "${runtimeConfPath}"
+        else
+          cat > "${runtimeConfPath}" <<'EOF'
+# wallpaper.conf — runtime settings for the wallpaper rotator (swww)
+# Lines are KEY=VALUE. '#' starts a comment.
+
+# Folder to copy wallpapers from (source of truth)
+#SOURCE_DIR="$HOME/nixos/files/wallpaper/picture"
+
+# Where wallpapers are copied to (a folder in your home)
+#TARGET_DIR="$HOME/wallpaper"
+
+# Folder used for rotation (where images are selected from)
+#ROTATION_DIR="$HOME/wallpaper/picture"
+
+# random | sequential
+#PICK_MODE="random"
+
+# swww transition settings
+#TRANSITION_TYPE="fade"
+#TRANSITION_DURATION="2.5"
+#TRANSITION_FPS="60"
+EOF
+        fi
+      fi
+    '';
+
+    # Start swww daemon on graphical session start
+    systemd.user.services.swww-daemon = {
+      Unit = {
+        Description = "swww wallpaper daemon";
+        After = [ "graphical-session.target" ];
+        PartOf = [ "graphical-session.target" ];
+      };
+      Service = {
+        ExecStart = "${pkgs.swww}/bin/swww-daemon";
+        Restart = "on-failure";
+      };
+      Install = {
+        WantedBy = [ "graphical-session.target" ];
+      };
+    };
+
+    # Rotate wallpaper hourly
+    systemd.user.services.wallpaper-rotate = {
+      Unit = {
+        Description = "Rotate wallpaper (hourly)";
+        After = [ "swww-daemon.service" ];
+      };
+      Service = {
+        Type = "oneshot";
+        ExecStart = "${rotateScript}";
+      };
+    };
+
+    systemd.user.timers.wallpaper-rotate = {
+      Unit = {
+        Description = "Hourly wallpaper rotation timer";
+      };
+      Timer = {
+        OnBootSec = "2m";
+        OnUnitActiveSec = "1h";
+        Unit = "wallpaper-rotate.service";
+      };
+      Install = {
+        WantedBy = [ "timers.target" ];
+      };
+    };
+  };
+}