fix(mcp): dedup PYTHONPATH and drop unsupported win32 platform

Addresses two Greptile findings on #428.

P1 - buildEnv duplicated PYTHONPATH when the parent environment already
set one. POSIX getenv returns the first match, so the user's stale
PYTHONPATH would shadow the engine's cache dir and break
`from lib import ...` with ModuleNotFoundError. buildEnv now filters
any incoming PYTHONPATH= entry before appending the cache dir. Adds
TestRunDropsPreExistingPythonPath (end-to-end through the stub
interpreter) and TestBuildEnvDropsAllPreExistingPythonPath (direct
unit on the helper) to cover the missed case.

P2 - manifest.compatibility.platforms listed "win32" even though the
release matrix doesn't ship a Windows binary; Claude Desktop would
let Windows users start an install with no matching artifact.
Removed until the Windows packaging follow-up lands. Manifest test
renamed to TestPlatformsMatchShippingMatrix and tightened: now
forbids platforms the release CI doesn't build, with a message
pointing at .github/workflows/release.yml.

go test ./... 38 passed across 4 packages.

This commit is contained in:

Matt Van Horn

2026-05-17 21:18:05 -07:00

parent e7b7e61237

commit 61d46b54ee

4 changed files with 91 additions and 12 deletions

									
										mcp/manifest.json
									
		+1
		-2
	
												View File
												
				@@ -145,8 +145,7 @@

				    "claude_desktop": ">=1.0.0",

				    "platforms": [

				      "darwin",

				      "linux",

				      "win32"

				      "linux"

				    ]

				  }

				}