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fix(tui_gateway): guard sys.path against local package shadowing (#15989)

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When the TUI backend (tui_gateway/entry.py) is spawned by Node.js with the
user's CWD containing a local utils/ directory, that directory shadows the
installed utils module, causing ImportError in run_agent and hermes_cli.

Strip '' and '.' from sys.path and prepend HERMES_PYTHON_SRC_ROOT (already
set by hermes_cli before spawning the subprocess) so installed packages
always win over CWD artifacts.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
briandevans 2026-04-26 09:32:41 -07:00 • committed by Teknium
parent 645a2f482d
commit 60b143e9df
2 changed files with 114 additions and 2 deletions
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15
tui_gateway/entry.py
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@ -1,7 +1,18 @@
import json
import os
import signal
import sys
# Guard against a local utils/ (or other package) in CWD shadowing installed
# hermes modules. hermes_cli sets HERMES_PYTHON_SRC_ROOT before spawning this
# subprocess; inserting it first ensures the installed packages win.
_src_root = os.environ.get("HERMES_PYTHON_SRC_ROOT", "")
if _src_root and _src_root not in sys.path:
sys.path.insert(0, _src_root)
# Strip '' and '.' — both resolve to CWD at import time and can let a local
# directory shadow installed packages.
sys.path = [p for p in sys.path if p not in ("", ".")]
import json
import signal
import time
import traceback