Debugging Rust with CodeLLDB opens WSL terminal instead of VS Code debug console

[bigyihsuan]

OS: Windows 11 Home 22H2 22621.1265
VSCode version: 1.75.1
CodeLLDB version: 1.8.1
Compiler: rustc 1.67.1

I'm trying to debug my Rust project with CodeLLDB and I want it to open the debugger in the built-in VS Code debug console. Instead, it opens a new WSL instance and tries to run the following in WSL:

$ c:\Users\bigyi\.vscode\extensions\vadimcn.vscode-lldb-1.8.1\adapter\codelldb.exe terminal-agent --connect=61793 
c:Usersbigyi.vscodeextensionsvadimcn.vscode-lldb-1.8.1adaptercodelldb.exe: command not found

My launch.json config is as follows:

{
    "type": "lldb",
    "request": "launch",
    "name": "Debug Rust",
    "program": "${workspaceFolder}/target/debug/esoteric_reaction.exe",
    "args": [
        "-f",
        "sample/hello-world.er"
    ],
}

Is there a way to get it to open the debug console?

Verbose log

Initial debug configuration: {
  type: 'lldb',
  request: 'launch',
  name: 'Debug Rust',
  program: '${workspaceFolder}/target/debug/esoteric_reaction.exe',
  args: [ '-f', 'sample/hello-world.er' ],
  __configurationTarget: 6
}
Resolved debug configuration: {
  type: 'lldb',
  request: 'launch',
  name: 'Debug Rust',
  program: '${workspaceFolder}/target/debug/esoteric_reaction.exe',
  args: [ '-f', 'sample/hello-world.er' ],
  __configurationTarget: 6,
  relativePathBase: 'd:\\Programming\\GithubRepos\\EsotericReaction',
  _adapterSettings: {
    displayFormat: 'auto',
    showDisassembly: 'auto',
    dereferencePointers: true,
    suppressMissingSourceFiles: true,
    evaluationTimeout: 5,
    consoleMode: 'commands',
    sourceLanguages: null,
    terminalPromptClear: null,
    evaluateForHovers: true,
    commandCompletions: true,
    reproducer: false
  }
}
liblldb: c:\Users\bigyi\.vscode\extensions\vadimcn.vscode-lldb-1.8.1\lldb\bin\liblldb.dll
environment: {}
params: { evaluateForHovers: true, commandCompletions: true }
[2023-02-24T15:16:44.675Z DEBUG codelldb] New debug session
[2023-02-24T15:16:44.786Z DEBUG codelldb::dap_codec] --> {"command":"initialize","arguments":{"clientID":"vscode","clientName":"Visual Studio Code","adapterID":"lldb","pathFormat":"path","linesStartAt1":true,"columnsStartAt1":true,"supportsVariableType":true,"supportsVariablePaging":true,"supportsRunInTerminalRequest":true,"locale":"en","supportsProgressReporting":true,"supportsInvalidatedEvent":true,"supportsMemoryReferences":true,"supportsArgsCanBeInterpretedByShell":true,"supportsMemoryEvent":true},"type":"request","seq":1}
[2023-02-24T15:16:44.786Z DEBUG codelldb::dap_codec] <-- {"seq":1,"type":"response","request_seq":1,"success":true,"command":"initialize","body":{"exceptionBreakpointFilters":[{"default":true,"filter":"cpp_throw","label":"C++: on throw"},{"default":false,"filter":"cpp_catch","label":"C++: on catch"}],"supportTerminateDebuggee":true,"supportsCancelRequest":true,"supportsCompletionsRequest":true,"supportsConditionalBreakpoints":true,"supportsConfigurationDoneRequest":true,"supportsDataBreakpoints":true,"supportsDelayedStackTraceLoading":true,"supportsEvaluateForHovers":true,"supportsFunctionBreakpoints":true,"supportsGotoTargetsRequest":true,"supportsHitConditionalBreakpoints":true,"supportsLogPoints":true,"supportsReadMemoryRequest":true,"supportsRestartFrame":true,"supportsSetVariable":true,"supportsWriteMemoryRequest":true}}
[2023-02-24T15:16:44.788Z DEBUG codelldb::dap_codec] --> {"command":"launch","arguments":{"type":"lldb","request":"launch","name":"Debug Rust","program":"D:\\Programming\\GithubRepos\\EsotericReaction/target/debug/esoteric_reaction.exe","args":["-f","sample/hello-world.er"],"__configurationTarget":6,"relativePathBase":"d:\\Programming\\GithubRepos\\EsotericReaction","_adapterSettings":{"displayFormat":"auto","showDisassembly":"auto","dereferencePointers":true,"suppressMissingSourceFiles":true,"evaluationTimeout":5,"consoleMode":"commands","sourceLanguages":null,"terminalPromptClear":null,"evaluateForHovers":true,"commandCompletions":true,"reproducer":false},"__sessionId":"beac51a5-93d9-4ce8-a20a-8e271675e55e"},"type":"request","seq":2}
[2023-02-24T15:16:44.789Z DEBUG codelldb::dap_codec] <-- {"seq":2,"type":"event","event":"output","body":{"output":"Console is in 'commands' mode, prefix expressions with '?'.\n"}}
INFO(Python) 10:16:44 formatters: Initializing
INFO(Python) 10:16:44 formatters.rust: Initializing
[2023-02-24T15:16:44.858Z DEBUG codelldb::dap_codec] <-- {"seq":3,"type":"event","event":"initialized"}
[2023-02-24T15:16:44.858Z DEBUG codelldb::debug_session] Debug event: 00000194D93BDD90 Event: broadcaster = 00000194D9764CB0 (lldb.target), type = 0x00000002 (modules-loaded), data = {esoteric_reaction.exe}
[2023-02-24T15:16:44.858Z DEBUG codelldb::dap_codec] <-- {"seq":4,"type":"event","event":"module","body":{"module":{"addressRange":"FFFFFFFFFFFFFFFF","id":"FFFFFFFFFFFFFFFF","name":"esoteric_reaction.exe","path":"D:\\Programming\\GithubRepos\\EsotericReaction\\target\\debug\\esoteric_reaction.exe","symbolFilePath":"D:\\Programming\\GithubRepos\\EsotericReaction\\target\\debug\\esoteric_reaction.exe","symbolStatus":"Symbols loaded."},"reason":"new"}}
[2023-02-24T15:16:44.858Z DEBUG codelldb::dap_codec] <-- {"seq":5,"type":"request","command":"runInTerminal","arguments":{"args":["c:\\Users\\bigyi\\.vscode\\extensions\\vadimcn.vscode-lldb-1.8.1\\adapter\\codelldb.exe","terminal-agent","--connect=61751"],"cwd":"","kind":"integrated","title":"Debug Rust"}}
[2023-02-24T15:16:44.861Z DEBUG codelldb::dap_codec] --> {"command":"setBreakpoints","arguments":{"source":{"name":"lex.rs","path":"d:\\Programming\\GithubRepos\\EsotericReaction\\src\\lex.rs"},"lines":[164],"breakpoints":[{"line":164}],"sourceModified":false},"type":"request","seq":3}
[2023-02-24T15:16:44.861Z DEBUG codelldb::dap_codec] --> {"command":"setFunctionBreakpoints","arguments":{"breakpoints":[]},"type":"request","seq":4}
[2023-02-24T15:16:44.861Z DEBUG codelldb::dap_codec] --> {"command":"setDataBreakpoints","arguments":{"breakpoints":[]},"type":"request","seq":5}
[2023-02-24T15:16:44.861Z DEBUG codelldb::dap_codec] --> {"command":"setExceptionBreakpoints","arguments":{"filters":["cpp_throw"]},"type":"request","seq":6}
[2023-02-24T15:16:44.882Z DEBUG codelldb::debug_session] Debug event: 00000194D87DF610 Event: broadcaster = 00000194D9764CB0 (lldb.target), type = 0x00000001 (breakpoint-changed), data = {bkpt: 1 type: breakpoint added}
[2023-02-24T15:16:44.882Z DEBUG codelldb::dap_codec] <-- {"seq":6,"type":"response","request_seq":3,"success":true,"command":"setBreakpoints","body":{"breakpoints":[{"id":1,"line":164,"message":"Resolved locations: 0","verified":true}]}}
[2023-02-24T15:16:44.882Z DEBUG codelldb::dap_codec] <-- {"seq":7,"type":"response","request_seq":4,"success":true,"command":"setFunctionBreakpoints","body":{"breakpoints":[]}}
[2023-02-24T15:16:44.882Z DEBUG codelldb::dap_codec] <-- {"seq":8,"type":"response","request_seq":5,"success":true,"command":"setDataBreakpoints","body":{"breakpoints":[]}}
[2023-02-24T15:16:44.882Z DEBUG codelldb::dap_codec] <-- {"seq":9,"type":"response","request_seq":6,"success":true,"command":"setExceptionBreakpoints"}
[2023-02-24T15:16:44.882Z DEBUG codelldb::debug_session] Debug event: 00000194D87DFAD0 Event: broadcaster = 00000194D9764CB0 (lldb.target), type = 0x00000001 (breakpoint-changed), data = {bkpt: 2 type: breakpoint added}
[2023-02-24T15:16:44.923Z DEBUG codelldb::dap_codec] --> {"command":"configurationDone","type":"request","seq":7}
[2023-02-24T15:16:44.923Z DEBUG codelldb::dap_codec] <-- {"seq":10,"type":"response","request_seq":7,"success":true,"command":"configurationDone"}
[2023-02-24T15:16:44.934Z DEBUG codelldb::dap_codec] --> {"command":"threads","type":"request","seq":8}
[2023-02-24T15:16:44.934Z DEBUG codelldb::dap_codec] <-- {"seq":11,"type":"response","request_seq":8,"success":true,"command":"threads","body":{"threads":[]}}
[2023-02-24T15:16:45.961Z DEBUG codelldb::dap_codec] --> {"type":"response","seq":9,"command":"runInTerminal","request_seq":5,"success":true,"body":{"shellProcessId":17896}}

[vadimcn]

What is your shell for the integrated terminal? Try setting it to cmd if it isn't already.

[bigyihsuan]

What is your shell for the integrated terminal? Try setting it to cmd if it isn't already.

Where is the setting for this?

EDIT: I set it to Powershell (F1 > Terminal: Select Default Profile) and VS Code still opens WSL.

[vadimcn]

Where is the setting for this?

terminal.integrated.defaultProfile.windows, but note that it says that terminal.integrated.shell.windows overrides it.

This problem is more about VSCode than it is about CodeLLDB, as the latter just requests that a command is executed in a terminal, the rest is done by VSCode, using its defaults, etc.

[bigyihsuan]

terminal.integrated.defaultProfile.windows, but note that it says that terminal.integrated.shell.windows overrides it.

That fixed it. Now the problem is that the window doesn't follow code execution, like how the Golang extension follows execution.

EDIT: running it with

{
    "type": "lldb",
    "request": "launch",
    "name": "Debug Rust",
    "cargo": {
        "args": [
            "run",
            "--"
        ]
    },
    "args": [...],
}

has it working now.

[vadimcn]

cargo run just runs your target without debugging. The point of "cargo": {} feature is to have Cargo build the target and report the location of the built executable, which CodeLLDB can subsequently launch.

[vadimcn]

Not sure what's up with your vscode configuration, but it should not be using WSL shell to launch commands requested by the debug adapter. The WSL shell obviously does not expect backslashes at a path separator, which causes the error you see.