# Bug report When running a `pip.pyz` file with the `py.exe` launcher (itself launched from a Rust program), the command fails with the error: ``` Unable to create process using 'C:\Users\Gustav\AppData\Local\Programs\Python\Python311\"py C:\Users\Gustav\.local\apps\pip.pyz --version': The system cannot find the file specified. ``` Unfortunately, I haven't been able to isolate a fully reproducible test case so far. However, I have set `$env:PYLAUNCHER_DEBUG=1` and the output of the failing command is ``` ❯ pip --version argv0: py.exe version: 3.11.0b5 # Read 4096 bytes from C:\Users\Gustav\.local\apps\pip.pyz to find shebang line Shebang: /usr/bin/env python # Reading from C:\Users\Gustav\AppData\Local\py.ini for commands/python # Did not find file C:\Users\Gustav\AppData\Local\py.ini # Reading from C:\WINDOWS\py.ini for commands/python # Did not find file C:\WINDOWS\py.ini # Treating shebang command 'python' as 'py' SearchInfo.originalCmdLine: "py.exe" C:\Users\Gustav\.local\apps\pip.pyz --version SearchInfo.restOfCmdLine: C:\Users\Gustav\.local\apps\pip.pyz --version SearchInfo.executablePath: (null) SearchInfo.scriptFile: C:\Users\Gustav\.local\apps\pip.pyz SearchInfo.executable: "py SearchInfo.executableArgs: SearchInfo.company: (null) SearchInfo.tag: (empty) SearchInfo.oldStyleTag: True SearchInfo.lowPriorityTag: False SearchInfo.exclude32Bit: False SearchInfo.only32Bit: False SearchInfo.allowDefaults: False SearchInfo.allowExecutableOverride: False SearchInfo.windowed: False SearchInfo.list: False SearchInfo.listPaths: False SearchInfo.help: False -V:3.11 C:\Users\Gustav\AppData\Local\Programs\Python\Python311\python.exe -V:3.10 C:\Users\Gustav\AppData\Local\Programs\Python\Python310\python.exe -V:3.9 C:\Users\Gustav\AppData\Local\Programs\Python\Python39\python.exe -V:3.8 C:\Users\Gustav\AppData\Local\Programs\Python\Python38\python.exe env.company: PythonCore env.tag: 3.11 # about to run: C:\Users\Gustav\AppData\Local\Programs\Python\Python311\"py C:\Users\Gustav\.local\apps\pip.pyz --version Unable to create process using 'C:\Users\Gustav\AppData\Local\Programs\Python\Python311\"py C:\Users\Gustav\.local\apps\pip.pyz --version': The system cannot find the file specified. ``` The key issue seems to be ``` SearchInfo.executable: "py ``` (note the unbalanced quotes) which appears to be a result of incorrectly parsing the following: ``` SearchInfo.originalCmdLine: "py.exe" C:\Users\Gustav\.local\apps\pip.pyz --version ``` I can create the same debug output using the internal `_winapi.CreateProcess` function: ``` _winapi.CreateProcess("C:/Windows/py.exe", '"py.exe" -0', None, None, 0, 0, None, None, 0) ``` So the problem appears to be when the command line passed to `CreateProcess` contains a double quoted but relative filename. # Your environment - Python and launcher from 3.11.0b5. - Operating system and architecture: Windows 11, 64-bit.