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Use pywinpty instead of ptyprocess on Windows for PTY support

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ptyprocess depends on Unix-only APIs (fork, openpty) and cannot work
on Windows at all. pywinpty provides a compatible PtyProcess interface
using the Windows ConPTY API.

This conditionally imports winpty.PtyProcess on Windows and
ptyprocess.PtyProcess on Unix. The pyproject.toml pty extra now uses
platform markers so the correct package is installed automatically.
This commit is contained in:
shitcoinsherpa 2026-03-05 17:02:51 -05:00
parent 21d61bdd71
commit dcba291d45
2 changed files with 9 additions and 3 deletions
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7
tools/process_registry.py
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@ -148,11 +148,14 @@ class ProcessRegistry:
if use_pty:
# Try PTY mode for interactive CLI tools
try:
import ptyprocess
if _IS_WINDOWS:
from winpty import PtyProcess as _PtyProcessCls
else:
from ptyprocess import PtyProcess as _PtyProcessCls
user_shell = _find_shell()
pty_env = os.environ | (env_vars or {})
pty_env["PYTHONUNBUFFERED"] = "1"
pty_proc = ptyprocess.PtyProcess.spawn(
pty_proc = _PtyProcessCls.spawn(
[user_shell, "-lic", command],
cwd=session.cwd,
env=pty_env,