First commit

OLD CONFIGS/nix_new/modules/nixos/desktop/portals.nix

@@ -0,0 +1,67 @@
+# Atomic responsibility:
+# - System-wide XDG basics
+# - System-wide xdg-desktop-portal + chosen backends
+# - A sane portals.conf selection (prevents “wrong backend” surprises)
+#
+# Notes:
+# - Keep ALL portal-related config here (do not also configure xdg.portal in wm-hyprland.nix).
+# - xdg.portal.config.common sets defaults via portals.conf(5) and is supported by NixOS. :contentReference[oaicite:0]{index=0}
+# - If you enable xdg.portal.wlr.enable elsewhere, it auto-adds xdg-desktop-portal-wlr to extraPortals. :contentReference[oaicite:1]{index=1}
+#   (We do NOT do that here because Hyprland typically uses xdg-desktop-portal-hyprland instead.)
+# - xdg-desktop-portal-gtk is commonly needed for OpenURI/FileChooser support. :contentReference[oaicite:2]{index=2}
+
+{ config, lib, pkgs, ... }:
+{
+  ##########################################################################
+  # XDG basics (system)
+  ##########################################################################
+  xdg = {
+    menus.enable = true;
+    mime.enable  = true;
+  };
+
+  ##########################################################################
+  # Portals (system)
+  ##########################################################################
+  xdg.portal = {
+    enable = true;
+
+    # Prefer Hyprland portal for compositor-integrated features (screensharing, etc),
+    # and GTK for things like OpenURI/FileChooser compatibility.
+    extraPortals = with pkgs; [
+      xdg-desktop-portal-hyprland
+      xdg-desktop-portal-gtk
+    ];
+
+    # Explicit portal routing via portals.conf (prevents “random backend chosen” issues).
+    # This writes /etc/xdg/xdg-desktop-portal/portals.conf. :contentReference[oaicite:3]{index=3}
+    config.common = {
+      # Default backend order for interfaces where multiple backends exist.
+      default = [ "hyprland" "gtk" ];
+
+      # (Optional, but often helpful) Ensure GTK handles common UX portals reliably.
+      "org.freedesktop.impl.portal.FileChooser" = [ "gtk" ];
+      "org.freedesktop.impl.portal.OpenURI"     = [ "gtk" ];
+    };
+  };
+
+  ##########################################################################
+  # Environment defaults (system)
+  ##########################################################################
+  environment.sessionVariables = {
+    # Encourage GTK apps to use portals for file picker / open-uri on Wayland.
+    GTK_USE_PORTAL = "1";
+
+    # Desktop identity hints used by some apps / portal logic.
+    # (Set once here; don’t duplicate in HM and NixOS.)
+    XDG_CURRENT_DESKTOP = "Hyprland";
+    XDG_SESSION_DESKTOP = "Hyprland";
+  };
+
+  ##########################################################################
+  # Optional: small, non-invasive tooling for troubleshooting
+  ##########################################################################
+  environment.systemPackages = with pkgs; lib.mkAfter [
+    xdg-utils
+  ];
+}