fix(power): drop TuneD for native CPU scaling (#461)

outputs/README.md

@@ -47,10 +47,10 @@ Some tests iterate over every configuration, so a new host is covered automatica
 them. Others name specific hosts — or a name prefix, like `k3s-api-endpoint`, which covers every
 `k3s-test-1-*` configuration — and only cover a new host if you add it.
 
-| Kind                | Tests                                                                                                                                                                                                                                                                     |
-| ------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| Every configuration | `hostname`, `kernel`, `nix-system-features`, `security-apparmor`, `security-container-groups`, `security-exporters`, `security-firewall`, `security-k3s-kubeconfig`, `security-k3s-pod-firewall`, `security-kernel`, `security-ssh-x11`                                   |
-| Named hosts only    | `btrbk`, `home-manager`, `home-manager-xdg`, `computer-use-headless`, `k3s-api-endpoint`, `k3s-node-home-manager`, `idols-ai-gpu`, `idols-ai-net`, `idols-ai-voice-input`, `idols-aquamarine`, `security-postgres-auth`, `youko-metrics`, `ups-metrics`, `shoukei-logind` |
+| Kind                | Tests                                                                                                                                                                                                                                                                                  |
+| ------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| Every configuration | `hostname`, `kernel`, `nix-system-features`, `security-apparmor`, `security-container-groups`, `security-exporters`, `security-firewall`, `security-k3s-kubeconfig`, `security-k3s-pod-firewall`, `security-kernel`, `security-ssh-x11`                                                |
+| Named hosts only    | `btrbk`, `cpu-power`, `home-manager`, `home-manager-xdg`, `computer-use-headless`, `k3s-api-endpoint`, `k3s-node-home-manager`, `idols-ai-gpu`, `idols-ai-net`, `idols-ai-voice-input`, `idols-aquamarine`, `security-postgres-auth`, `youko-metrics`, `ups-metrics`, `shoukei-logind` |
 
 `hostname` expects each configuration's `networking.hostName` to equal its name. Niri desktop
 configurations are the exception (`ai-niri` → `ai`, `shoukei-niri` → `shoukei`) and are listed in

outputs/aarch64-linux/tests/cpu-power/expected.nix

@@ -0,0 +1,6 @@
+{
+  governor = "schedutil";
+  noTuned = true;
+  noFrequencyCaps = true;
+  batteryReporting = true;
+}

outputs/aarch64-linux/tests/cpu-power/expr.nix

@@ -0,0 +1,17 @@
+{
+  lib,
+  outputs,
+  ...
+}:
+let
+  cfg = outputs.nixosConfigurations.shoukei-niri.config;
+in
+{
+  governor = cfg.powerManagement.cpuFreqGovernor;
+  noTuned = lib.all (host: !host.config.services.tuned.enable) (
+    builtins.attrValues outputs.nixosConfigurations
+  );
+  noFrequencyCaps =
+    cfg.powerManagement.cpufreq.min == null && cfg.powerManagement.cpufreq.max == null;
+  batteryReporting = cfg.services.upower.enable;
+}

outputs/x86_64-linux/tests/cpu-power/expected.nix

@@ -0,0 +1,12 @@
+{
+  lib,
+  ...
+}:
+{
+  governors = lib.genAttrs [ "ai-niri" "aquamarine" "shoryu" "shushou" "youko" ] (_: "powersave");
+  noTuned = true;
+  noEeeWorkaround = true;
+  noFrequencyCaps = true;
+  guestsHaveNoCpuPolicy = true;
+  desktopBatteryReporting = true;
+}

outputs/x86_64-linux/tests/cpu-power/expr.nix

@@ -0,0 +1,35 @@
+{
+  lib,
+  outputs,
+  ...
+}:
+let
+  configs = outputs.nixosConfigurations;
+  physicalHosts = [
+    "ai-niri"
+    "aquamarine"
+    "shoryu"
+    "shushou"
+    "youko"
+  ];
+in
+{
+  governors = lib.genAttrs physicalHosts (
+    name: configs.${name}.config.powerManagement.cpuFreqGovernor
+  );
+  noTuned = lib.all (host: !host.config.services.tuned.enable) (builtins.attrValues configs);
+  noEeeWorkaround = lib.all (host: !(host.config.systemd.services ? disable-eee)) (
+    builtins.attrValues configs
+  );
+  noFrequencyCaps = lib.all (
+    name:
+    let
+      cfg = configs.${name}.config.powerManagement;
+    in
+    cfg.cpufreq.min == null && cfg.cpufreq.max == null
+  ) physicalHosts;
+  guestsHaveNoCpuPolicy = lib.all (name: !(configs.${name}.config.systemd.services ? cpufreq)) (
+    lib.subtractLists physicalHosts (builtins.attrNames configs)
+  );
+  desktopBatteryReporting = configs.ai-niri.config.services.upower.enable;
+}