148 lines
5.1 KiB
Nix
148 lines
5.1 KiB
Nix
# Steam Sandboxed with nix-bwrapper
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# Provides a sandboxed Steam with restricted permissions like Lutris
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{
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config,
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lib,
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pkgs,
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inputs,
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...
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}:
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let
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bwrapperPkgs = pkgs.extend inputs.nix-bwrapper.overlays.default;
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in
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{
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nixpkgs.overlays = [
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(final: prev: {
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steam-sandboxed = bwrapperPkgs.mkBwrapper {
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app = {
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package = prev.steam;
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isFhsenv = true; # Steam uses buildFHSEnv
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id = "com.valvesoftware.Steam";
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env = {
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# Unset LD_PRELOAD to avoid mimalloc crashes
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LD_PRELOAD = "";
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# Propagate XDG_DATA_DIRS for theming
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XDG_DATA_DIRS = "$XDG_DATA_DIRS";
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# Proton/Wine optimizations
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PROTON_USE_NTSYNC = 1;
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XDG_CURRENT_DESKTOP = "niri";
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XDG_SESSION_TYPE = "wayland";
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DBUS_SESSION_BUS_ADDRESS = "unix:path=$XDG_RUNTIME_DIR/bus";
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};
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};
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# Enable X11 and Wayland
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sockets.x11 = true;
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sockets.wayland = true;
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# Disable Flatpak emulation
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flatpak.enable = false;
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fhsenv = {
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skipExtraInstallCmds = true; # Steam package is special, don't try to modify it
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};
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fhsenv.opts = {
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unshareUser = true;
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unshareUts = false;
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unshareCgroup = false;
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unsharePid = false; # Share PIDs for compatibility
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unshareNet = false; # Need network for Steam login/downloads
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unshareIpc = false;
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};
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fhsenv.bwrap.baseArgs = lib.mkForce [
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"--new-session"
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"--proc /proc"
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"--dev /dev"
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"--dev-bind /dev/dri /dev/dri" # GPU acceleration
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"--dev-bind /dev/shm /dev/shm" # Shared memory (required for games)
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"--dev-bind-try /dev/uinput /dev/uinput" # Controller support
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"--dev-bind-try /dev/input /dev/input" # Controller/input devices
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"--dev-bind-try /dev/hidraw0 /dev/hidraw0" # HID devices (controllers)
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"--dev-bind-try /dev/hidraw1 /dev/hidraw1"
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"--dev-bind-try /dev/hidraw2 /dev/hidraw2"
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"--dev-bind-try /dev/hidraw3 /dev/hidraw3"
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"--tmpfs /home"
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"--tmpfs /tmp"
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"--tmpfs /run"
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"--dir /run/user"
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"--dir /run/user/${toString config.users.users.ashie.uid}"
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# System paths
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"--ro-bind /sys /sys"
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"--ro-bind-try /run/current-system /run/current-system"
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"--ro-bind-try /run/opengl-driver /run/opengl-driver"
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"--ro-bind-try /run/opengl-driver-32 /run/opengl-driver-32"
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"--dir /run/systemd/resolve"
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"--ro-bind-try /run/systemd/resolve /run/systemd/resolve"
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"--unsetenv LD_PRELOAD"
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# udev for controller hotplug
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"--ro-bind-try /run/udev /run/udev"
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];
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mounts = {
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read = [
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"$HOME/.config/fontconfig"
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"$HOME/.local/share/fonts"
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"$HOME/.icons"
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"$HOME/.themes"
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"$HOME/.local/share/themes"
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"$HOME/.config/qt6ct"
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"$HOME/.config/Kvantum"
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"$HOME/.config/MangoHud"
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"$HOME/.config/kdedefaults"
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"$HOME/.local/share/color-schemes"
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];
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readWrite = [
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"$HOME/Games"
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"$HOME/.steam"
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"$HOME/.local/share/Steam"
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"$HOME/.local/share/umu"
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"$HOME/.local/share/applications"
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"$HOME/.local/share/desktop-directories"
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"$HOME/.local/share/icons"
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"$HOME/.local/share/Larian Studios"
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"$HOME/Desktop"
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];
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};
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# Disable built-in DBus module (invokes bwrap without --unshare-user)
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dbus.enable = false;
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# Manually set up DBus proxy with --unshare-user (session bus only)
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script.preCmds.stage2 = (import ./sandbox-utils.nix { inherit pkgs lib; }).mkDbusProxyScript {
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appId = "com.valvesoftware.Steam";
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enableSystemBus = false; # No system bus access
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proxyArgs = [
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"--filter"
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''--talk="org.freedesktop.portal.*"''
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''--call="org.freedesktop.portal.*=*@/org/freedesktop/portal/desktop"''
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''--talk="org.freedesktop.Notifications"''
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''--talk="org.freedesktop.ScreenSaver"''
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''--talk="org.kde.StatusNotifierWatcher"''
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''--talk="org.kde.KWin"''
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''--talk="org.gnome.Mutter.DisplayConfig"''
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''--talk="org.freedesktop.secrets"''
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''--talk="com.feralinteractive.GameMode"''
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''--talk="org.freedesktop.portal.*"''
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''--own="com.valvesoftware.Steam"''
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''--own="com.valvesoftware.Steam.*"''
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];
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};
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fhsenv.bwrap.additionalArgs = [
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# D-Bus session proxy only
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''--bind "$XDG_RUNTIME_DIR/app/com.valvesoftware.Steam/bus" "$XDG_RUNTIME_DIR/bus"''
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# Wayland socket
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''--bind "$XDG_RUNTIME_DIR/$WAYLAND_DISPLAY" "$XDG_RUNTIME_DIR/$WAYLAND_DISPLAY"''
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# PipeWire + Pulse
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''--bind "$XDG_RUNTIME_DIR/pipewire-0" "$XDG_RUNTIME_DIR/pipewire-0"''
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''--bind "$XDG_RUNTIME_DIR/pulse" "$XDG_RUNTIME_DIR/pulse"''
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];
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};
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})
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];
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}
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