bazel_6: Add patch for system sleep on Darwin

This re-uses the same patch as bazel_7 which indeed is also necessary here, since
otherwise building bazel_6 failed with

```
FATAL: CHECK failed: (success) == (0):
```

at https://github.com/bazelbuild/bazel/blob/d839db66ee86bc906a9789e99d11e0b85aba20be/src/main/native/darwin/sleep_prevention_jni.cc#L39

pkgs/development/tools/build-managers/bazel/bazel_6/darwin_sleep.patch

···
+diff --git a/src/main/native/darwin/sleep_prevention_jni.cc b/src/main/native/darwin/sleep_prevention_jni.cc
+index 67c35b201e..e50a58320e 100644
+--- a/src/main/native/darwin/sleep_prevention_jni.cc
++++ b/src/main/native/darwin/sleep_prevention_jni.cc
+@@ -33,31 +33,13 @@ static int g_sleep_state_stack = 0;
+ static IOPMAssertionID g_sleep_state_assertion = kIOPMNullAssertionID;
+ 
+ int portable_push_disable_sleep() {
+-  std::lock_guard<std::mutex> lock(g_sleep_state_mutex);
+-  BAZEL_CHECK_GE(g_sleep_state_stack, 0);
+-  if (g_sleep_state_stack == 0) {
+-    BAZEL_CHECK_EQ(g_sleep_state_assertion, kIOPMNullAssertionID);
+-    CFStringRef reasonForActivity = CFSTR("build.bazel");
+-    IOReturn success = IOPMAssertionCreateWithName(
+-        kIOPMAssertionTypeNoIdleSleep, kIOPMAssertionLevelOn, reasonForActivity,
+-        &g_sleep_state_assertion);
+-    BAZEL_CHECK_EQ(success, kIOReturnSuccess);
+-  }
+-  g_sleep_state_stack += 1;
+-  return 0;
++  // Unreliable, disable for now
++  return -1;
+ }
+ 
+ int portable_pop_disable_sleep() {
+-  std::lock_guard<std::mutex> lock(g_sleep_state_mutex);
+-  BAZEL_CHECK_GT(g_sleep_state_stack, 0);
+-  g_sleep_state_stack -= 1;
+-  if (g_sleep_state_stack == 0) {
+-    BAZEL_CHECK_NE(g_sleep_state_assertion, kIOPMNullAssertionID);
+-    IOReturn success = IOPMAssertionRelease(g_sleep_state_assertion);
+-    BAZEL_CHECK_EQ(success, kIOReturnSuccess);
+-    g_sleep_state_assertion = kIOPMNullAssertionID;
+-  }
+-  return 0;
++  // Unreliable, disable for now
++  return -1;
+ }
+ 
+ }  // namespace blaze_jni
+diff --git a/src/main/native/darwin/system_suspension_monitor_jni.cc b/src/main/native/darwin/system_suspension_monitor_jni.cc
+index 3483aa7935..51782986ec 100644
+--- a/src/main/native/darwin/system_suspension_monitor_jni.cc
++++ b/src/main/native/darwin/system_suspension_monitor_jni.cc
+@@ -83,10 +83,7 @@ void portable_start_suspend_monitoring() {
+     // Register to receive system sleep notifications.
+     // Testing needs to be done manually. Use the logging to verify
+     // that sleeps are being caught here.
+-    suspend_state.connect_port = IORegisterForSystemPower(
+-        &suspend_state, &notifyPortRef, SleepCallBack, &notifierObject);
+-    BAZEL_CHECK_NE(suspend_state.connect_port, MACH_PORT_NULL);
+-    IONotificationPortSetDispatchQueue(notifyPortRef, queue);
++    // XXX: Unreliable, disable for now
+ 
+     // Register to deal with SIGCONT.
+     // We register for SIGCONT because we can't catch SIGSTOP.

pkgs/development/tools/build-managers/bazel/bazel_6/default.nix

···
     # the prebuilt one does not work in nix world.
     ./java_toolchain.patch
 
+    # Bazel integrates with apple IOKit to inhibit and track system sleep.
+    # Inside the darwin sandbox, these API calls are blocked, and bazel
+    # crashes. It seems possible to allow these APIs inside the sandbox, but it
+    # feels simpler to patch bazel not to use it at all. So our bazel is
+    # incapable of preventing system sleep, which is a small price to pay to
+    # guarantee that it will always run in any nix context.
+    #
+    # See also ./bazel_darwin_sandbox.patch in bazel_5. That patch uses
+    # NIX_BUILD_TOP env var to conditionnally disable sleep features inside the
+    # sandbox.
+    #
+    # If you want to investigate the sandbox profile path,
+    # IORegisterForSystemPower can be allowed with
+    #
+    #     propagatedSandboxProfile = ''
+    #       (allow iokit-open (iokit-user-client-class "RootDomainUserClient"))
+    #     '';
+    #
+    # I do not know yet how to allow IOPMAssertion{CreateWithName,Release}
+    ./darwin_sleep.patch
+
     # On Darwin, the last argument to gcc is coming up as an empty string. i.e: ''
     # This is breaking the build of any C target. This patch removes the last
     # argument if it's found to be an empty string.

pkgs/development/tools/build-managers/bazel/bazel_7/default.nix

···
     #
     # See also ./bazel_darwin_sandbox.patch in bazel_5. That patch uses
     # NIX_BUILD_TOP env var to conditionnally disable sleep features inside the
-    # sandbox. Oddly, bazel_6 does not need that patch :-/.
+    # sandbox.
     #
     # If you want to investigate the sandbox profile path,
     # IORegisterForSystemPower can be allowed with