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| author | Tor Hedin Brønner <torhedinbronner@gmail.com> | 2019-10-19 15:38:04 +0200 |
|---|---|---|
| committer | Tor Hedin Brønner <torhedinbronner@gmail.com> | 2019-10-19 17:14:38 +0200 |
| commit | 927a6fdaad493044f2344cba73e6310d3450ca00 (patch) | |
| tree | 04243cfc538c2b93b6a8bcbf796c3ab1344692d7 | |
| parent | gnome3.mutter: drop inheritable cap_sys_nice (diff) | |
| download | nixpkgs-927a6fdaad493044f2344cba73e6310d3450ca00.tar.gz | |
nixos/gnome3: launch gnome-shell wayland with RT scheduling
We create a wrapper which launches gnome-shell with the correct environment and
cap_sys_nice.
We can then override gnome-shell-wayland.service to use this wrapper.
NOTE: We need to force clear the environment, because the defaults aren't good
for user services. That should probably be fixed.
| -rw-r--r-- | nixos/modules/services/x11/desktop-managers/gnome3.nix | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/nixos/modules/services/x11/desktop-managers/gnome3.nix b/nixos/modules/services/x11/desktop-managers/gnome3.nix index 9a402c74c052..1544a8420537 100644 --- a/nixos/modules/services/x11/desktop-managers/gnome3.nix +++ b/nixos/modules/services/x11/desktop-managers/gnome3.nix @@ -269,6 +269,26 @@ in source-sans-pro ]; + ## Enable soft realtime scheduling, only supported on wayland ## + + security.wrappers.".gnome-shell-wrapped" = { + source = "${pkgs.gnome3.gnome-shell}/bin/.gnome-shell-wrapped"; + capabilities = "cap_sys_nice=ep"; + }; + + systemd.user.services.gnome-shell-wayland = let + gnomeShellRT = with pkgs.gnome3; pkgs.runCommand "gnome-shell-rt" {} '' + mkdir -p $out/bin/ + cp ${gnome-shell}/bin/gnome-shell $out/bin + sed -i "s@${gnome-shell}/bin/@${config.security.wrapperDir}/@" $out/bin/gnome-shell + ''; + in { + # Note we need to clear ExecStart before overriding it + serviceConfig.ExecStart = ["" "${gnomeShellRT}/bin/gnome-shell"]; + # Do not use the default environment, it provides a broken PATH + environment = mkForce {}; + }; + # Adapt from https://gitlab.gnome.org/GNOME/gnome-build-meta/blob/gnome-3-32/elements/core/meta-gnome-core-shell.bst environment.systemPackages = with pkgs.gnome3; [ adwaita-icon-theme |