pyghidraRun fails when using MSYS2 Python

[ws2bhhh]

Environment:

• Ghidra Version: 12.1
• Python Version: 3.14 (MSYS2)

Description:
When attempting to run pyghidraRun using MSYS2's Python, pyghidra_launcher.py fails due to path layout and executable lookup assumptions:

1. pyghidra_launcher.py defaults to python3 in python_cmds.
2. It attempts to call python3 under <venv>\Scripts.
3. It attempts to install JPype1 1.5.2.

Steps 2 and 3 always fail because MSYS2's Python placing binaries under <venv>/bin/ instead of <venv>\Scripts\.

Furthermore, because python3 is prioritized in python_cmds, attempting to switch or point to another Python installation does not work—it continually falls back to using python3.

Also i think JPype1 1.5.2 may also lack support for Python 3.14 (always fail to build and doesn't have prebuild wheel).

[ws2bhhh]

Also a possible fix:

def find_supported_python_exe(install_dir: Path, dev: bool) -> List[str]:
    ...
    python_cmds += list(chain.from_iterable([[f'python{s}'], ['py', f'-{s}']] for s in supported))
    - python_cmds += [['python3'], ['python'], ['py']]
    + python_cmds += [['python'], ['python3'], ['py']]

    for cmd in python_cmds:

[ryanmkurtz]

I installed msys2 and am seeing different behavior

ghidra/Ghidra/Features/PyGhidra/support/pyghidra_launcher.py

Lines 127 to 130 in 2a81006

	def get_venv_exe(venv_dir: Path) -> List[str]:
	win_python_cmd: str = str(venv_dir / 'Scripts' / 'python.exe')
	linux_python_cmd: str = str(venv_dir / 'bin' / 'python3')
	return [win_python_cmd] if platform.system() == 'Windows' else [linux_python_cmd]

When i run platform.system(), i am getting MSYS_NT-10.0-22621, so it's using linux_python_cmd, which looks in bin/.

[ws2bhhh]

[ryanmkurtz]

How did you install that python? I went through the MSYS2 terminal using pacman.

[ws2bhhh]

dependency by other package i think.

[ws2bhhh]

User@HOST ~> pacman -Q | grep python
mingw-w64-ucrt-x86_64-python 3.14.7-1
mingw-w64-ucrt-x86_64-python-binwalk 2.4.3-3
mingw-w64-ucrt-x86_64-python-packaging 26.3-1
User@HOST ~> python3
Python 3.14.7 (main, Aug  8 2026, 21:15:19)  [MINGW GCC UCRT 16.2.0 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import platform
>>> platform.system()
'Windows'

updated. and still the same.

[ryanmkurtz]

Turns out i had both the mingw-w64-ucrt-x86-64-python and the python3 packages installed, and the latter was on the path. If i force the former, i see what you see, and I can proceed.

[ryanmkurtz]

Also i think JPype1 1.5.2 may also lack support for Python 3.14 (always fail to build and doesn't have prebuild wheel).

I am now running into this too. It looks like it's trying to pass in visual studio arguments to gcc, and it fails. That might need to be brought up with the JPype project.