Grep tool fails on Windows: ripgrep extraction broken by MSIX PowerShell 7 PSModulePath, and failures are cached until restart

Description

The built-in grep/glob tools fail on Windows when rg.exe is not installed. Two bugs are involved:

Bug 1 — ripgrep zip extraction always fails when the Microsoft Store (MSIX) version of PowerShell 7 is installed and used to launch opencode.

opencode downloads ripgrep successfully, then extracts the zip by spawning powershell.exe (Windows PowerShell 5.1) with Expand-Archive (packages/core/src/ripgrep/binary.ts). If opencode was launched from the MSIX PowerShell 7 session, that session's PSModulePath lists the Store package's own Modules dir (c:\program files\windowsapps\microsoft.powershell_<ver>_x64__8wekyb3d8bbwe\Modules, i.e. $PSHOME\Modules of the MSIX pwsh) before C:\Windows\system32\WindowsPowerShell\v1.0\Modules.

The spawned 5.1 process inherits this PSModulePath (extendEnv: true). When autoloading Expand-Archive, the 5.1 module autoloader hits the PowerShell-7-only (Core edition) Microsoft.PowerShell.Archive module in the MSIX dir first, deems it incompatible, and stops searching instead of continuing to the compatible 5.1 module in System32. Result:

Expand-Archive : 无法加载模块"Microsoft.PowerShell.Archive"，因为找不到模块"Microsoft.PowerShell.Archive"中的"Expand-Archive"命令。
Import-Module Microsoft.PowerShell.Archive
所在位置 行:1 字符: 50
+ ... lobal:ProgressPreference = 'SilentlyContinue'; Expand-Archive -Litera ...
+                                                    ~~~~~~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (Expand-Archive:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CouldNotAutoloadMatchingModule

The zip is downloaded to ~/.cache/opencode/bin/ but never extracted; every Grep/Glob call repeats download + extraction failure.

Bug 2 — the failed ripgrep resolution is permanently cached.

binary.ts wraps the locate/download/extract logic in Effect.cached, which caches failures as well as successes. Even after the environment is fixed (e.g. rg.exe manually placed in ~/.cache/opencode/bin/), every Grep/Glob call in the same process keeps returning the stale failure with no retry, until opencode is restarted. Verified via logs: a fresh process finds rg.exe and works immediately; the long-running process keeps failing without even logging a new "downloading ripgrep" attempt.

Plugins

None (default)

OpenCode version

1.18.13 (CLI, installed via npm)

Steps to reproduce

1. Do not have rg.exe in PATH or in ~/.cache/opencode/bin/
2. Install PowerShell 7 via Microsoft Store (MSIX) and launch opencode from its terminal
3. Ask the agent to use the grep tool
4. Observe CouldNotAutoloadMatchingModule error; ripgrep-15.1.0-x86_64-pc-windows-msvc.zip is downloaded but never extracted
5. Manually place rg.exe into ~/.cache/opencode/bin/ — the tool still fails until opencode is restarted

Screenshot and/or share link

N/A

Operating System

Windows 11

Terminal

Windows Terminal (PowerShell 7.6.3, Microsoft Store/MSIX install)