fix(cookbook): activate local Windows venv in bash runner

routes/cookbook_helpers.py

@@ -1204,6 +1204,27 @@ def _safe_env_prefix(ep: str | None) -> str | None:
     return f'[ -f "{path}" ] && source "{path}" || true'
 
 
+def _local_windows_bash_env_prefix(ep: str | None) -> str | None:
+    """Convert a frontend PowerShell venv prefix for the local Git Bash runner."""
+    if not ep:
+        return ep
+    try:
+        parts = shlex.split(ep, posix=True)
+    except ValueError:
+        return ep
+    if len(parts) != 2 or parts[0] != "&":
+        return ep
+    path = parts[1]
+    if not re.search(r"[/\\]Activate\.ps1$", path, re.IGNORECASE):
+        return ep
+    bash_path = path.replace("\\", "/")
+    bash_path = re.sub(r"/Activate\.ps1$", "/activate", bash_path, flags=re.IGNORECASE)
+    m = re.fullmatch(r"([A-Za-z]):/(.*)", bash_path)
+    if m:
+        bash_path = f"/{m.group(1).lower()}/{m.group(2)}"
+    return "source " + shlex.quote(bash_path)
+
+
 def _ssh_ps(host, script_path, port=None):
     """Build SSH command to run a PowerShell script on a Windows remote."""
     pf = f"-p {port} " if port and port != "22" else ""

routes/cookbook_routes.py

@@ -50,7 +50,7 @@ from routes.cookbook_helpers import (
     _SESSION_ID_RE, _validate_repo_id, _validate_serve_model_id, _validate_include, _validate_token,
     _validate_local_dir, _validate_gpus, _shell_path,
     _ps_squote, _bash_squote, _validate_serve_cmd, _parse_serve_phase, OLLAMA_MISSING_HINT,
-    _safe_env_prefix, _local_tooling_path_export, _append_serve_preflight_exit_lines,
+    _safe_env_prefix, _local_windows_bash_env_prefix, _local_tooling_path_export, _append_serve_preflight_exit_lines,
     _append_serve_exit_code_lines, _append_llama_cpp_linux_accel_build_lines, _cached_model_scan_script,
     load_stored_hf_token,
     _append_vllm_linux_preflight_lines, _ollama_bind_from_cmd, _pip_install_fallback_chain,
@@ -1298,7 +1298,7 @@ def setup_cookbook_routes() -> APIRouter:
             # Local: run hf download in the background (tmux on POSIX, a detached
             # process + logfile on Windows where tmux doesn't exist).
             if req.env_prefix:
-                lines.append(_safe_env_prefix(req.env_prefix))
+                lines.append(_safe_env_prefix(_local_windows_bash_env_prefix(req.env_prefix) if local_windows else req.env_prefix))
             else:
                 lines.append("deactivate 2>/dev/null; hash -r")
             # Show whether the HF token reached this run (masked) — tells a gated
@@ -2128,7 +2128,7 @@ def setup_cookbook_routes() -> APIRouter:
             if req.gpus:
                 runner_lines.append(f"export CUDA_VISIBLE_DEVICES='{req.gpus}'")
             if req.env_prefix:
-                runner_lines.append(_safe_env_prefix(req.env_prefix))
+                runner_lines.append(_safe_env_prefix(_local_windows_bash_env_prefix(req.env_prefix) if local_windows else req.env_prefix))
             else:
                 runner_lines.append("deactivate 2>/dev/null; hash -r")
             _append_venv_nvidia_library_path_lines(runner_lines, cmd=req.cmd)

tests/test_cookbook_helpers.py

@@ -16,6 +16,7 @@ from routes.cookbook_helpers import (
     _llama_cpp_rebuild_cmd,
     _append_vllm_linux_preflight_lines,
     _local_tooling_path_export,
+    _local_windows_bash_env_prefix,
     _pip_install_attempt,
     _pip_install_fallback_chain,
     _ollama_bind_from_cmd,
@@ -107,6 +108,16 @@ def test_safe_env_prefix_accepts_powershell_activation_path():
     )
 
 
+def test_local_windows_bash_env_prefix_converts_powershell_venv_activation():
+    prefix = _local_windows_bash_env_prefix("& 'C:\\Users\\me\\venv\\Scripts\\Activate.ps1'")
+
+    assert prefix == "source /c/Users/me/venv/Scripts/activate"
+    assert (
+        _safe_env_prefix(prefix)
+        == '[ -f "/c/Users/me/venv/Scripts/activate" ] && source "/c/Users/me/venv/Scripts/activate" || true'
+    )
+
+
 def test_validate_local_dir_accepts_external_drive_paths_with_spaces():
     path = "/Volumes/T7 2TB/AI Models/llamacpp"