fix: detect WSL on non-English Windows locales

[Variiuz]

Problem

On Windows, local Codacy CLI analysis via MCP fails with:

"CLI on Windows is not supported without WSL."

…even when WSL is installed and working.

Root cause: WSL detection parses wsl --status output for the English string
"Default Distribution". On localized Windows installs the label differs, e.g.:

• de-DE: Standard-Distribution: Ubuntu
• fr-FR: Distribution par défaut: Ubuntu
• cs-CZ: Výchozí distribuce: Debian

So hasWSL is always false and the MCP uses WinCodacyCli, which rejects all operations.

Fix

Treat a successful wsl --status exit as proof WSL is available, instead of
matching a locale-specific label.

Alternative Fix

Alternative fix would be to use regex:

const hasWSL = /:\s*\S+/m.test(stdout); // "Something: Ubuntu"

Test plan

• Windows + English locale + WSL: codacy_cli_analyze works
• Windows + German locale + WSL: codacy_cli_analyze works
• Windows without WSL: still returns "CLI on Windows is not supported without WSL."

[gemini-code-assist]

Code Review

This pull request refactors the WSL availability check on Windows by introducing a helper function isWslAvailable that runs wsl --status instead of parsing localized stdout strings. Feedback suggests improving this check by using wsl -l -q to ensure that at least one Linux distribution is actually installed and registered, preventing potential failures when executing commands via WSL.

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[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

View in Codacy

🟢 Metrics 0 duplication

Metric	Results
Duplication	0

View in Codacy

AI Reviewer: first review requested successfully. AI can make mistakes. Always validate suggestions.

_{TIP This summary will be updated as you push new changes.}

[Copilot]

Pull request overview

Fixes incorrect WSL detection on Windows systems using non-English locales by switching from parsing localized wsl --status output to using command success/failure as the signal for WSL availability. This ensures the MCP uses WinWSLCodacyCli only when WSL truly isn’t available, rather than failing due to locale-dependent labels.

Changes:

• Add isWslAvailable() helper that treats a successful wsl --status execution as proof WSL is available.
• Replace string-based WSL detection (stdout.includes('Default Distribution')) with the new helper.

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[codacy-production]

Pull Request Overview

This PR successfully addresses WSL detection issues on non-English Windows locales by switching from output string parsing to checking command execution status. While Codacy indicates the code is up to standards, the transition to wsl --status introduces a potential functional gap: the command may return a successful exit code even if no WSL distributions are installed. This could result in the CLI incorrectly selecting the WSL-based implementation over the standard Windows implementation. Furthermore, there are no automated tests included to verify the new detection logic or the factory's fallback behavior, and the implementation lacks a timeout mechanism to handle cases where the WSL subsystem might hang.

About this PR

• The implementation relies on the exit code of wsl --status. While this solves the localization issue, it removes the specific check for a 'Default Distribution' presence; if wsl --status returns success without a distribution configured, it might lead to downstream failures in WinWSLCodacyCli.
• The PR does not include automated tests (unit or integration) to verify the new detection logic or the factory selection logic.

Test suggestions

• isWslAvailable returns true when 'wsl --status' succeeds
• isWslAvailable returns false when 'wsl --status' fails or is not found
• Cli.createInstance selects WinWSLCodacyCli when WSL is detected
• Cli.createInstance selects WinCodacyCli when WSL detection fails

Prompt proposal for missing tests

Consider implementing these tests if applicable:
1. isWslAvailable returns true when 'wsl --status' succeeds
2. isWslAvailable returns false when 'wsl --status' fails or is not found
3. Cli.createInstance selects WinWSLCodacyCli when WSL is detected
4. Cli.createInstance selects WinCodacyCli when WSL detection fails

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[joanasteodoro]

Hi! We are going to release a version soon where you no longer need to worry about WSL detection! Our new CLI makes everything easier :)

[Variiuz]

Hi! We are going to release a version soon where you no longer need to worry about WSL detection! Our new CLI makes everything easier :)

Alrighty, then this can be ignored 🙏