Added nixos configs

OLD CONFIGS/nix_old/modules/home-manager/flatpak.nix

@@ -0,0 +1,58 @@
+{ config, pkgs, lib, ... }:
+
+let
+  p = import ./conf/packages.conf { inherit pkgs; };
+  remote = p.flatpakRemote;
+  apps = p.flatpakApps;
+  q = lib.escapeShellArg;
+  appArgs = lib.concatStringsSep " " (map q apps);
+  moduleName = "hm-flatpak";
+in
+{
+  services.flatpak.enable = true;
+
+  # Make network-online.target meaningful on NetworkManager systems
+  systemd.services.NetworkManager-wait-online.enable = true;
+
+  systemd.services.flatpak-sync = {
+    description = "Sync Flatpak remote and apps";
+    wantedBy = [ "multi-user.target" ];
+
+    wants = [ "network-online.target" ];
+    after = [ "network-online.target" ];
+
+    # re-run when system changes (useful when app list changes)
+    #restartTriggers = [ config.system.build.toplevel ];
+
+    serviceConfig = {
+      Type = "oneshot";
+      TimeoutStartSec = 300;
+    };
+
+    script = ''
+      set -euo pipefail
+      FLATPAK=${pkgs.flatpak}/bin/flatpak
+
+      # wait for DNS (prevents your exact error)
+      for i in $(seq 1 30); do
+        if ${pkgs.getent}/bin/getent hosts dl.flathub.org >/dev/null 2>&1; then
+          break
+        fi
+        sleep 1
+      done
+
+      "$FLATPAK" remote-add --system --if-not-exists ${q remote.name} ${q remote.url} || true
+
+      installed="$("$FLATPAK" list --system --app --columns=application 2>/dev/null || true)"
+      for app in ${appArgs}; do
+        if echo "$installed" | grep -qx "$app"; then
+          echo "flatpak: already installed: $app"
+        else
+          echo "flatpak: installing: $app"
+          "$FLATPAK" install --system -y ${q remote.name} "$app"
+        fi
+      done
+    '';
+  };
+    home.file.".nixlog/loaded.${moduleName}-module-loaded".text = "loaded\n";
+}