On 2020-05-23 09:50, Marco Atzeri via Cygwin wrote: > On 23.05.2020 17:09, Kagami Rosylight via Cygwin wrote:
>> I found that Cygwin can’t run UWP based CLI tools, as they expose their >> executables as reparse points with the tag IO_REPARSE_TAG_APPEXECLINK which >> Cygwin does not support. >> >> Way to reproduce this issue on Cygwin: >> >> 1. Install Python from Microsoft Store: >> https://www.microsoft.com/en-us/p/python-38/9mssztt1n39l (assuming you don’t >> already have python3.8 on your PATH.) >> 2. Try running `python3.8` on Cygwin. It will say >> “/cygdrive/c/Users/Kagami/AppData/Local/Microsoft/WindowsApps/python3.8: >> Permission denied” >> 3. Check it’s real path by `get-childitem -path >> C:/Users/Kagami/AppData/Local/Microsoft/WindowsApps/python3.8.exe` on >> PowerShell. It’s `C:\Program >> Files\WindowsApps\PythonSoftwareFoundation.Python.3.8_3.8.1008.0_x64__qbz5n2kfra8p0\python3.8.exe`. >> >> 4. Try running python again with that path. This succeeds. >> >> I posted this issue on MSYS2 GitHub repo >> (https://github.com/msys2/MSYS2-packages/issues/1943) but I think Cygwin is >> the right place to file this. >> >> Relevant prior works: >> >> * Python >> https://github.com/python/cpython/commit/df2d4a6f3d5da2839c4fc11d31511c8e028daf2c >> * libuv >> https://github.com/libuv/libuv/commit/e7ebae26247d2fee0a04547eb7f9aa8f78d4a642 >> * PowerShell https://github.com/PowerShell/PowerShell/pull/10331 > Not clear why you expect that a Windows specific tag as > IO_REPARSE_TAG_APPEXECLINK should be supported on a Posix platform ? > > Moreover all the documentation from MS seems > > https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-fscc/c8e77b37-3909-4fe6-a4ea-2b9d423b1ee4 > > that seems a bit short to help third party in properly using it. I think the general point being made is that /some/ Windows tools can not be run from Cygwin. I wonder what happens if the OP runs "cygstart python3.8"? -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada This email may be disturbing to some readers as it contains too much technical detail. Reader discretion is advised. [Data in IEC units and prefixes, physical quantities in SI.] -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
