wayland: enable ozone via $NIXOS_OZONE_WL

Chrome, Chromium, VSCode, Slack, Signal, Discord, element-desktop,
schildichat.

For the latter two, the feature flag useWayland was removed and a
wrapper script was provided.

3 files changed, 30 insertions, 9 deletions

diff --git a/nixos/doc/manual/from_md/release-notes/rl-2205.section.xml b/nixos/doc/manual/from_md/release-notes/rl-2205.section.xml
index 436157515eb..47739c097ea 100644
--- a/nixos/doc/manual/from_md/release-notes/rl-2205.section.xml
+++ b/nixos/doc/manual/from_md/release-notes/rl-2205.section.xml
@@ -543,6 +543,19 @@
       </listitem>
       <listitem>
         <para>
+          If you are using Wayland you can choose to use the Ozone
+          Wayland support in Chrome and several Electron apps by setting
+          the environment variable <literal>NIXOS_OZONE_WL=1</literal>
+          (for example via
+          <literal>environment.sessionVariables.NIXOS_OZONE_WL = &quot;1&quot;</literal>).
+          This is not enabled by default because Ozone Wayland is still
+          under heavy development and behavior is not always flawless.
+          Furthermore, not all Electron apps use the latest Electron
+          versions.
+        </para>
+      </listitem>
+      <listitem>
+        <para>
           The <literal>influxdb2</literal> package was split into
           <literal>influxdb2-server</literal> and
           <literal>influxdb2-cli</literal>, matching the split that took
diff --git a/nixos/doc/manual/release-notes/rl-2205.section.md b/nixos/doc/manual/release-notes/rl-2205.section.md
index 9d919711cb7..1628ad20d67 100644
--- a/nixos/doc/manual/release-notes/rl-2205.section.md
+++ b/nixos/doc/manual/release-notes/rl-2205.section.md
@@ -60,7 +60,7 @@ In addition to numerous new and upgraded packages, this release has the followin
 ## Backward Incompatibilities {#sec-release-22.05-incompatibilities}
 
 - `pkgs.ghc` now refers to `pkgs.targetPackages.haskellPackages.ghc`.
-  This *only* makes a difference if you are cross-compiling and will
+  This _only_ makes a difference if you are cross-compiling and will
   ensure that `pkgs.ghc` always runs on the host platform and compiles
   for the target platform (similar to `pkgs.gcc` for example).
   `haskellPackages.ghc` still behaves as before, running on the build
@@ -177,7 +177,7 @@ In addition to numerous new and upgraded packages, this release has the followin
   to allow users to make changes to the `nixos-rebuild build-vm` configuration
   that do not apply to their normal system.
 
-  The `config.system.build.vm` attribute now always exists and  defaults to the
+  The `config.system.build.vm` attribute now always exists and defaults to the
   value from `vmVariant`. Configurations that import the `virtualisation/qemu-vm.nix`
   module themselves will override this value, such that `vmVariant` is not used.
 
@@ -185,6 +185,14 @@ In addition to numerous new and upgraded packages, this release has the followin
 
 - The `writers.writePyPy2`/`writers.writePyPy3` and corresponding `writers.writePyPy2Bin`/`writers.writePyPy3Bin` convenience functions to create executable Python 2/3 scripts using the PyPy interpreter were added.
 
+- If you are using Wayland you can choose to use the Ozone Wayland support
+  in Chrome and several Electron apps by setting the environment variable
+  `NIXOS_OZONE_WL=1` (for example via
+  `environment.sessionVariables.NIXOS_OZONE_WL = "1"`).
+  This is not enabled by default because Ozone Wayland is
+  still under heavy development and behavior is not always flawless.
+  Furthermore, not all Electron apps use the latest Electron versions.
+
 - The `influxdb2` package was split into `influxdb2-server` and
   `influxdb2-cli`, matching the split that took place upstream. A
   combined `influxdb2` package is still provided in this release for
@@ -236,8 +244,9 @@ In addition to numerous new and upgraded packages, this release has the followin
   Plugins are automatically repackaged using autoPatchelf.
 
 - The `zrepl` package has been updated from 0.4.0 to 0.5:
-    * The RPC protocol version was bumped; all zrepl daemons in a setup must be updated and restarted before replication can resume.
-    * A bug involving encrypt-on-receive has been fixed.  Read the [zrepl documentation](https://zrepl.github.io/configuration/sendrecvoptions.html#job-recv-options-placeholder) and check the output of `zfs get -r encryption,zrepl:placeholder PATH_TO_ROOTFS` on the receiver.
+
+  - The RPC protocol version was bumped; all zrepl daemons in a setup must be updated and restarted before replication can resume.
+  - A bug involving encrypt-on-receive has been fixed. Read the [zrepl documentation](https://zrepl.github.io/configuration/sendrecvoptions.html#job-recv-options-placeholder) and check the output of `zfs get -r encryption,zrepl:placeholder PATH_TO_ROOTFS` on the receiver.
 
 - Renamed option `services.openssh.challengeResponseAuthentication` to `services.openssh.kbdInteractiveAuthentication`.
   Reason is that the old name has been deprecated upstream.
diff --git a/nixos/tests/vscodium.nix b/nixos/tests/vscodium.nix
index 66baea73ec6..688ddfe07e3 100644
--- a/nixos/tests/vscodium.nix
+++ b/nixos/tests/vscodium.nix
@@ -3,11 +3,10 @@ let
     wayland = { pkgs, ... }: {
       imports = [ ./common/wayland-cage.nix ];
 
-      services.cage.program = ''
-        ${pkgs.vscodium}/bin/codium \
-          --enable-features=UseOzonePlatform \
-          --ozone-platform=wayland
-      '';
+      services.cage.program = "${pkgs.vscodium}/bin/codium";
+
+      environment.variables.NIXOS_OZONE_WL = "1";
+      environment.variables.DISPLAY = "do not use";
 
       fonts.fonts = with pkgs; [ dejavu_fonts ];
     };