Add dev support for Windows ARM builds #9987
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E2E Tests 🚀 |
samclark2015
previously approved these changes
Oct 24, 2025
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This looks great! I was able to get a development version going on Windows on Arm (couple bumps, which were sorted).
Tested:
- Detects both x64 and Arm R installs ✅
- Confirmed expected processes (Positron, Air, Ark, Kallichore) are running as Arm processes ✅
- Confirmed spawning x64 R spawns x64 Ark ✅
- Confirmed Copilot functions as expected ✅
Of note: Python works as expected using x64 binaries, but Arm binaries throws an error on launching a session:
Traceback (most recent call last):
File "c:\Users\Sam\Documents\positron\extensions\positron-python\python_files\posit\positron_language_server.py", line 10, in <module>
from positron.positron_ipkernel import (
...<3 lines>...
)
File "c:\Users\Sam\Documents\positron\extensions\positron-python\python_files\posit\positron\positron_ipkernel.py", line 18, in <module>
import psutil
File "c:\Users\Sam\Documents\positron\extensions\positron-python\python_files\lib\ipykernel\arm64\cp3\psutil\__init__.py", line 100, in <module>
from . import _pswindows as _psplatform
File "c:\Users\Sam\Documents\positron\extensions\positron-python\python_files\lib\ipykernel\arm64\cp3\psutil\_pswindows.py", line 30, in <module>
from ._psutil_windows import ABOVE_NORMAL_PRIORITY_CLASS
ImportError: DLL load failed while importing _psutil_windows: %1 is not a valid Win32 application.
juliasilge
previously approved these changes
Oct 24, 2025
jmcphers
dismissed stale reviews from juliasilge and samclark2015
via
5e060f5
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This change adds developer support for producing dev and release builds on Windows ARM. It does not actually add Windows ARM release builds, as those require infrastructure we do not yet have.
Rough outline of changes:
R-aarch64EMFILEissues on Windows ARM builderProgress towards #5254.