yazi: filechooser

modules/host.nix

@@ -1,4 +1,4 @@
-{
+{ pkgs, ... }: {
   imports = [
     ./host/bluetooth.nix
     ./host/bootloader.nix
@@ -17,7 +17,36 @@
     ./host/yggdrasil.nix
   ];
 
-  programs.hyprland.enable = true;
+  programs = {
+    dconf.enable = true;
+    hyprland.enable = true;
+  };
+
+  xdg.portal = {
+    enable = true;
+    xdgOpenUsePortal = true;
+
+    extraPortals = with pkgs; [
+      xdg-desktop-portal-hyprland
+      xdg-desktop-portal-gtk
+      xdg-desktop-portal-termfilechooser
+    ];
+
+    config = {
+      common = {
+        default = [ "hyprland" "gtk" ];
+        "org.freedesktop.impl.portal.FileChooser" = [ "termfilechooser" "gtk" ];
+        "org.freedesktop.impl.portal.Settings" = [ "gtk" ];
+      };
+
+      hyprland = {
+        default = [ "hyprland" "gtk" ];
+        "org.freedesktop.impl.portal.FileChooser" = [ "termfilechooser" "gtk" ];
+        "org.freedesktop.impl.portal.Settings" = [ "gtk" ];
+      };
+    };
+  };
+
   services = {
     udisks2.enable = true;
     fstrim.enable = true;

modules/host/env.nix

@@ -1,8 +1,15 @@
-{
+{ lib, ... }: {
   environment.variables = {
     EDITOR = "hx";
     RANGER_LOAD_DEFAULT_RC = "FALSE";
-    QT_QPA_PLATFORMTHEME = "qt5ct";
-    GSETTINGS_BACKEND = "keyfile";
+    # GTK/Electron apps do not consistently use the portal picker unless this
+    # variable is present in the graphical session environment.
+    GTK_USE_PORTAL = "1";
+
+    # Qt/Telegram-like apps otherwise keep using their own picker. This makes
+    # them ask xdg-desktop-portal for file/folder selection.
+    QT_QPA_PLATFORMTHEME = lib.mkForce "xdgdesktopportal";
+    TDESKTOP_USE_GTK_FILE_DIALOG = "1";
+
   };
 }

modules/user/hyprland.nix

@@ -41,6 +41,11 @@ in {
       env = [
         "XDG_SESSION_TYPE,wayland"
         "QT_QPA_PLATFORM,wayland"
+        "QT_QPA_PLATFORMTHEME,xdgdesktopportal"
+        "GTK_USE_PORTAL,1"
+        "TDESKTOP_USE_GTK_FILE_DIALOG,1"
+        "NIXOS_OZONE_WL,1"
+        "ELECTRON_OZONE_PLATFORM_HINT,auto"
 
         "XDG_CURRENT_DESKTOP,Hyprland"
         "XDG_SESSION_DESKTOP,Hyprland"
@@ -115,6 +120,8 @@ in {
 
       exec-once = lib.mkBefore [
         "systemctl --user start plasma-polkit-agent"
+        "${lib.getExe' pkgs.dbus "dbus-update-activation-environment"} --systemd --all"
+        "systemctl --user import-environment XDG_CURRENT_DESKTOP XDG_SESSION_DESKTOP XDG_SESSION_TYPE WAYLAND_DISPLAY DISPLAY GTK_USE_PORTAL QT_QPA_PLATFORMTHEME TDESKTOP_USE_GTK_FILE_DIALOG NIXOS_OZONE_WL ELECTRON_OZONE_PLATFORM_HINT"
         "awww-daemon"
         "wl-clip-persist --clipboard both"
         "clipse -listen"
@@ -228,11 +235,21 @@ in {
 
     extraPortals = [
       pkgs.xdg-desktop-portal-gtk
+      pkgs.xdg-desktop-portal-termfilechooser
     ];
 
-    config.common = {
+    config = {
+      common = {
         default = [ "hyprland" "gtk" ];
-      "org.freedesktop.impl.portal.FileChooser" = [ "gtk" ];
+        "org.freedesktop.impl.portal.FileChooser" = [ "termfilechooser" "gtk" ];
+        "org.freedesktop.impl.portal.Settings" = [ "gtk" ];
+      };
+
+      hyprland = {
+        default = [ "hyprland" "gtk" ];
+        "org.freedesktop.impl.portal.FileChooser" = [ "termfilechooser" "gtk" ];
+        "org.freedesktop.impl.portal.Settings" = [ "gtk" ];
+      };
     };
   };
 }

modules/user/qt.nix

@@ -1,4 +1,14 @@
-{
+{ lib, ... }: {
+  # Keep qtct/Kvantum for styling, but tell qtct to delegate standard file
+  # dialogs to xdg-desktop-portal. This is what makes AyuGram/Telegram-like Qt
+  # apps use the Yazi picker instead of Qt's built-in dialog.
+  stylix.targets.qt.standardDialogs = "xdgdesktopportal";
+
+  home.sessionVariables = {
+    QT_QPA_PLATFORMTHEME = lib.mkForce "xdgdesktopportal";
+    TDESKTOP_USE_GTK_FILE_DIALOG = "1";
+  };
+
   qt = {
     enable = true;
     platformTheme.name = "qtct";

modules/user/yazi.nix

@@ -27,6 +27,61 @@
     exec ${lib.getExe pkgs.ghostty} --title="Yazi" -e ${lib.getExe yaziPkg} "$target"
   '';
 
+  yaziFileChooser = pkgs.writeShellScriptBin "yazi-file-chooser" ''
+    set -efu
+
+    directory="''${2:-0}"
+    save="''${3:-0}"
+    path="''${4:-}"
+    out="''${5:?missing termfilechooser output path}"
+
+    state_dir="''${XDG_STATE_HOME:-$HOME/.local/state}/xdg-desktop-portal-termfilechooser"
+    last_selected_path="$state_dir/last-selected"
+    ${lib.getExe' pkgs.coreutils "mkdir"} -p "$state_dir"
+
+    if [ -s "$last_selected_path" ]; then
+      IFS= read -r last_selected < "$last_selected_path" || true
+      if [ -d "$last_selected" ]; then
+        if [ "$save" = "1" ] && [ -n "$path" ]; then
+          path="$last_selected/''${path##*/}"
+        else
+          path="$last_selected"
+        fi
+      fi
+    fi
+
+    if [ -z "$path" ]; then
+      path="$HOME"
+    fi
+
+    created_placeholder=0
+    if [ "$save" = "1" ] && [ ! -e "$path" ]; then
+      placeholder_dir="''${path%/*}"
+      if [ "$placeholder_dir" != "$path" ]; then
+        ${lib.getExe' pkgs.coreutils "mkdir"} -p "$placeholder_dir"
+      fi
+
+      {
+        printf '%s\n' 'This file was created by xdg-desktop-portal-termfilechooser.'
+        printf '%s\n' 'Move/rename it in Yazi, then open/select it to choose the save path.'
+      } > "$path"
+      created_placeholder=1
+    fi
+
+    ${lib.getExe pkgs.ghostty} --title="Yazi File Picker" -e ${lib.getExe yaziPkg} --chooser-file="$out" --cwd-file="$last_selected_path" "$path"
+
+    if [ "$directory" = "1" ] && [ ! -s "$out" ] && [ -s "$last_selected_path" ]; then
+      IFS= read -r cwd < "$last_selected_path" || true
+      if [ -n "''${cwd:-}" ] && [ -d "$cwd" ]; then
+        printf '%s\n' "$cwd" > "$out"
+      fi
+    fi
+
+    if [ "$created_placeholder" = "1" ] && [ ! -s "$out" ]; then
+      ${lib.getExe' pkgs.coreutils "rm"} -f "$path"
+    fi
+  '';
+
   fileManager1 = pkgs.writeShellScriptBin "yazi-filemanager1" ''
     exec ${pkgs.python3.withPackages (ps: [ ps.dbus-next ])}/bin/python ${pkgs.writeText "yazi-filemanager1.py" ''
       import asyncio
@@ -97,6 +152,18 @@ in {
     yaziOpen
   ];
 
+  home.sessionVariables = {
+    GTK_USE_PORTAL = "1";
+  };
+
+  xdg.configFile."xdg-desktop-portal-termfilechooser/config".text = ''
+    [filechooser]
+    cmd=${lib.getExe yaziFileChooser}
+    default_dir=$HOME
+    open_mode=suggested
+    save_mode=last
+  '';
+
   xdg.desktopEntries.yazi = {
     name = "Yazi";
     genericName = "File Manager";
@@ -123,6 +190,8 @@ in {
 
   wayland.windowManager.hyprland.settings.windowrule = [
     "match:class dragon-drop, move cursor_x-window_w/2 cursor_y-window_h/2"
+    "match:title Yazi File Picker, float 1"
+    "match:title Yazi File Picker, size 1200 800"
   ];
 
   programs.yazi = {