jetbrains: Copilot Agent terminated unexpectedly. Exit code: null

[pbek]

Thank you very much for the NixOS MCP!
When trying mcp-nixos in PhpStorm or Clion in NixOS via GitHub copilot, using this msp.json config:

{
    "servers": {
        "nixos": {
            "command": "nix",
            "args": ["run", "github:utensils/mcp-nixos", "--"]
        }
    }
}

I get an error:

Copilot Agent terminated unexpectedly. Exit code: null

com.intellij.openapi.diagnostic.RuntimeExceptionWithAttachments: java.lang.RuntimeException: Copilot Agent terminated unexpectedly. Exit code: null
	at com.intellij.idea.IdeaLogger.error(IdeaLogger.java:111)
	at com.github.copilot.util.LoggerUtil.errorAndSecureTelemetry(LoggerUtil.java:36)
	at com.github.copilot.lang.agent.RestartableCopilotAgentProcessService$BaseDelegateImplementation.onRestartException(RestartableCopilotAgentProcessService.java:258)
	at com.github.copilot.lang.agent.CopilotAgentProcessServiceImpl.handleAgentExceptionLocked(CopilotAgentProcessServiceImpl.java:349)
	at com.github.copilot.lang.agent.CopilotAgentProcessServiceImpl.lambda$executeCommandWithPromise$4(CopilotAgentProcessServiceImpl.java:380)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: java.lang.RuntimeException: Copilot Agent terminated unexpectedly. Exit code: null
	... 8 more
Caused by: java.io.IOException: Stream closed
	at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:447)
	at java.base/java.io.OutputStream.write(OutputStream.java:167)
	at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:125)
	at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:252)
	at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:246)
	at com.github.copilot.lang.agent.vscodeRpc.VSCodeJsonRpc.sendBytes(VSCodeJsonRpc.java:77)
	at com.github.copilot.lang.agent.vscodeRpc.VSCodeJsonRpc.sendCommand(VSCodeJsonRpc.java:38)
	at com.github.copilot.lang.agent.CopilotAgentProcessServiceImpl.lambda$executeCommandWithPromise$4(CopilotAgentProcessServiceImpl.java:377)
	... 5 more

I was running nix run github:utensils/mcp-nixos -- manually once to get the cache "warm".

[pbek]

I can confirm it works now, thank you very much!