beszel: fix Darwin build (#522076)

pkgs/by-name/be/beszel/package.nix

@@ -1,7 +1,9 @@
 {
+  stdenv,
   buildGo126Module,
   lib,
   fetchFromGitHub,
+  fetchpatch,
   nix-update-script,
   buildNpmPackage,
   nixosTests,
@@ -53,7 +55,14 @@ buildGo126Module (finalAttrs: {
 
   vendorHash = "sha256-TVpZbK9V9/GqpVFcjF7QGD5XJJHzRgjVXZOImHQTR1k=";
 
-  tags = [ "testing" ];
+  patches = [
+    # https://github.com/NixOS/nixpkgs/pull/513197
+    (fetchpatch {
+      name = "fix-updater-after-system-manager-shutdown.patch";
+      url = "https://github.com/henrygd/beszel/commit/c538d1de1cf3f4664a2d98086341884a217846e7.patch";
+      hash = "sha256-voIT9b14pgfhnbJrqgoIbQtwZPU1JF0fblybjG9mzvM=";
+    })
+  ];
 
   preBuild = ''
     mkdir -p internal/site/dist
@@ -66,15 +75,33 @@ buildGo126Module (finalAttrs: {
         "TestCollectorStartHelpers/nvtop_collector"
         "TestApiRoutesAuthentication/GET_/update_-_shouldn't_exist_without_CHECK_UPDATES_env_var"
         "TestConfigSyncWithTokens"
+        # This subtest assumes enough host CPUs for an 8s CPU delta over 1s to stay below 100%.
+        "TestServiceUpdateCPUPercent/subsequent_call_calculates_CPU_percentage"
+      ]
+      ++ lib.optionals stdenv.hostPlatform.isDarwin [
+        "TestCollectorStartHelpers/nvidia-smi_collector"
+        "TestCollectorStartHelpers/rocm-smi_collector"
+        "TestCollectorStartHelpers/tegrastats_collector"
+        "TestNewGPUManagerPriorityNvtopFallback"
+        "TestNewGPUManagerPriorityMixedCollectors"
+        "TestNewGPUManagerPriorityNvmlFallbackToNvidiaSmi"
+        "TestNewGPUManagerConfiguredCollectorsMustStart"
+        "TestNewGPUManagerConfiguredNvmlBypassesCapabilityGate"
+        "TestNewGPUManagerJetsonIgnoresCollectorConfig"
       ];
     in
-    [ "-skip=^${builtins.concatStringsSep "$|^" skippedTests}$" ];
+    [
+      "-skip=^${builtins.concatStringsSep "$|^" skippedTests}$"
+      "-tags=testing"
+    ];
 
   postInstall = ''
     mv $out/bin/agent $out/bin/beszel-agent
     mv $out/bin/hub $out/bin/beszel-hub
   '';
 
+  __darwinAllowLocalNetworking = true;
+
   passthru = {
     updateScript = nix-update-script {
       extraArgs = [