nixos/modules/system/faugus-sandboxed.nix
2026-01-14 21:24:19 +01:00

154 lines
5.5 KiB
Nix

# Faugus Launcher Sandboxed with nix-bwrapper
# Provides a sandboxed Faugus Launcher with restricted permissions
# Uses advanced D-Bus proxy approach like Steam for stronger isolation
{
config,
lib,
pkgs,
inputs,
...
}:
let
bwrapperPkgs = pkgs.extend inputs.nix-bwrapper.overlays.default;
in
{
nixpkgs.overlays = [
(final: prev: {
faugus-sandboxed =
let
singleDesktopPkg =
pkgs.symlinkJoin {
name = "faugus-launcher-single";
paths = [ prev.faugus-launcher ];
postBuild = ''
rm -rf $out/share/applications
mkdir -p $out/share/applications
ln -s ${prev.faugus-launcher}/share/applications/faugus-launcher.desktop $out/share/applications/io.github.faugus.Launcher.desktop
'';
}
// {
inherit (prev.faugus-launcher) pname version meta;
};
in
bwrapperPkgs.mkBwrapper {
app = {
package = singleDesktopPkg;
id = "io.github.faugus.Launcher";
env = {
# Propagate XDG_DATA_DIRS so themes/icons can be found
XDG_DATA_DIRS = "$XDG_DATA_DIRS";
# Fix for file dialogs/theming
XDG_CURRENT_DESKTOP = "KDE";
# GTK theming
GTK_THEME = "catppuccin-frappe-blue-standard";
# Force GTK to use the portal for file dialogs
GTK_USE_PORTAL = "1";
# Force Wayland backend to ensure xdg-foreign protocol works
GDK_BACKEND = "wayland";
};
};
# Enable X11 and Wayland
sockets.x11 = true;
sockets.wayland = true;
# Disable Flatpak emulation
flatpak.enable = false;
fhsenv.opts = {
unshareUser = true;
unshareUts = false;
unshareCgroup = false;
unsharePid = false;
unshareNet = false; # Need network
unshareIpc = false;
};
fhsenv.bwrap.baseArgs = lib.mkForce [
"--new-session"
"--proc /proc"
"--dev /dev"
"--dev-bind /dev/dri /dev/dri" # GPU acceleration
"--dev-bind /dev/shm /dev/shm" # Shared memory
"--tmpfs /home"
"--tmpfs /tmp"
"--tmpfs /run"
"--dir /run/user"
"--dir /run/user/${toString config.users.users.ashie.uid}"
# System paths
"--ro-bind /sys /sys"
"--ro-bind-try /run/current-system /run/current-system"
"--ro-bind-try /run/opengl-driver /run/opengl-driver"
"--ro-bind-try /run/opengl-driver-32 /run/opengl-driver-32"
"--dir /run/systemd/resolve"
"--ro-bind-try /run/systemd/resolve /run/systemd/resolve"
];
mounts = {
read = [
"$HOME/.config/kdedefaults"
"$HOME/.local/share/color-schemes"
"$HOME/.config/fontconfig"
"$HOME/.icons"
"$HOME/.themes"
"$HOME/.local/share/themes"
"$HOME/.local/share/fonts"
"$HOME/.config/Kvantum"
"$HOME/.config/gtk-3.0"
"$HOME/.config/gtk-4.0"
"$HOME/.gtkrc-2.0"
"$HOME/.config/MangoHud"
];
readWrite = [
"$HOME/Games"
"$HOME/.config/faugus-launcher"
"$HOME/.local/share/faugus-launcher"
"$HOME/.cache/faugus-launcher"
"$HOME/.config/qt6ct" # Allow theming
];
};
# Disable built-in DBus module (invokes bwrap without --unshare-user)
dbus.enable = false;
# Manually set up DBus proxy with --unshare-user (session bus only)
script.preCmds.stage2 = (import ./sandbox-utils.nix { inherit pkgs lib; }).mkDbusProxyScript {
appId = "io.github.faugus.Launcher";
enableSystemBus = false; # No system bus access
proxyArgs = [
"--filter"
''--talk="org.freedesktop.portal.*"''
''--talk="org.freedesktop.portal.FileChooser"''
''--call="org.freedesktop.portal.*=*@/org/freedesktop/portal/desktop"''
''--talk="org.freedesktop.Notifications"''
''--talk="org.freedesktop.ScreenSaver"''
''--talk="org.kde.StatusNotifierWatcher"''
''--talk="org.kde.KWin"''
''--talk="org.gnome.Mutter.DisplayConfig"''
''--talk="org.freedesktop.secrets"''
''--talk="org.freedesktop.portal.Settings"''
''--talk="com.feralinteractive.GameMode"''
''--own="io.github.faugus.Launcher"''
''--own="io.github.faugus.Launcher.*"''
];
};
fhsenv.bwrap.additionalArgs = [
# D-Bus session proxy only
''--bind "$XDG_RUNTIME_DIR/app/io.github.faugus.Launcher/bus" "$XDG_RUNTIME_DIR/bus"''
# Wayland socket
''--bind "$XDG_RUNTIME_DIR/$WAYLAND_DISPLAY" "$XDG_RUNTIME_DIR/$WAYLAND_DISPLAY"''
# PipeWire + Pulse
''--bind "$XDG_RUNTIME_DIR/pipewire-0" "$XDG_RUNTIME_DIR/pipewire-0"''
''--bind "$XDG_RUNTIME_DIR/pulse" "$XDG_RUNTIME_DIR/pulse"''
# dconf for GTK settings
"--bind-try /run/user/${toString config.users.users.ashie.uid}/dconf /run/user/${toString config.users.users.ashie.uid}/dconf"
];
};
})
];
}