fixes and docs

packages/cockpit-benchmark/default.nix

@@ -0,0 +1,72 @@
+{
+  fio,
+  jq,
+  lib,
+  namespace,
+  nodejs,
+  npmHooks,
+  fetchNpmDeps,
+  stdenv,
+}:
+let
+  inherit (lib.trivial) importJSON;
+  inherit (lib.${namespace}) mkAllSources selectVariant;
+
+  versionSpec = importJSON ./version.json;
+  selected = selectVariant versionSpec null null;
+  sources = mkAllSources selected;
+  inherit (selected.variables) version;
+in
+stdenv.mkDerivation (finalAttrs: {
+  pname = "cockpit-benchmark";
+  inherit version;
+
+  src = sources.src;
+
+  npmDeps = fetchNpmDeps {
+    src = "${finalAttrs.src}/benchmark";
+    hash = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
+  };
+
+  nativeBuildInputs = [
+    jq
+    nodejs
+    npmHooks.npmConfigHook
+    npmHooks.npmBuildHook
+    npmHooks.npmInstallHook
+  ];
+
+  # fio is the runtime benchmark tool invoked by the plugin's backend script.
+  passthru.cockpitPath = [ fio ];
+
+  # npmConfigHook expects to run in the directory with package.json
+  preConfigure = ''
+    cd benchmark
+  '';
+
+  # Write version.js before vite build (mirrors what the Makefile does)
+  preBuild = ''
+    pluginVersion="$(jq -r '.version' ../manifest.json)-$(jq -r '.build_number' ../manifest.json)"
+    echo "export const pluginVersion = \"''${pluginVersion}\";" > src/version.js
+  '';
+
+  npmBuildScript = "build";
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/share/cockpit/benchmark
+    cp -r dist/* $out/share/cockpit/benchmark/
+
+    runHook postInstall
+  '';
+
+  meta = {
+    description = "Cockpit storage benchmark utility using fio";
+    homepage = "https://github.com/45Drives/cockpit-benchmark";
+    changelog = "https://github.com/45Drives/cockpit-benchmark/releases/tag/v${version}";
+    license = lib.licenses.gpl3Plus;
+    platforms = lib.platforms.linux;
+    maintainers = [ ];
+  };
+})

packages/cockpit-benchmark/version.json

@@ -0,0 +1,15 @@
+{
+  "schemaVersion": 1,
+  "variables": {
+    "version": "2.1.2"
+  },
+  "sources": {
+    "src": {
+      "fetcher": "github",
+      "owner": "45Drives",
+      "repo": "cockpit-benchmark",
+      "tag": "v${version}",
+      "hash": "sha256-YmOCdqAdYPnNcXqCccvI0nVhR/EdYXdkeenmy4DdGK0="
+    }
+  }
+}