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msd-core/.changeset/812-copilot-home.md
Tom Boucher 3025a6846e fix(#812): honor COPILOT_HOME in Copilot global config-dir resolution (#814)
* fix(#812): honor COPILOT_HOME in Copilot global config-dir resolution

getGlobalConfigDir('copilot') resolved the global config directory using
only --config-dir > COPILOT_CONFIG_DIR > ~/.copilot, ignoring the
COPILOT_HOME env var. Per GitHub's Copilot CLI docs, COPILOT_HOME
overrides the default ~/.copilot location (and user-level hooks are read
from $COPILOT_HOME/hooks/), so a global --copilot install wrote all
artifacts (skills, agents, copilot-instructions.md, the gsd-session.json
hook) to ~/.copilot even when the user relocated their Copilot home,
making them undiscoverable by Copilot CLI.

Mirror the codex/CODEX_HOME branch: precedence is now
--config-dir > COPILOT_CONFIG_DIR > COPILOT_HOME > ~/.copilot. Uninstall
uses the same resolver, so it stays symmetric.

Also: document COPILOT_HOME in the installer --help notes, the
USER-GUIDE env-var table, and the installer-migrations Copilot row; and
clear COPILOT_HOME in the two default-path test suites so they stay
hermetic now that the resolver honors it.

Closes #812

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* chore(#812): add changeset for PR #814

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-07 15:27:46 -04:00

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---
type: Fixed
pr: 814
---
Honor the `COPILOT_HOME` environment variable when resolving the GitHub Copilot global config directory. Previously a global `--copilot` install ignored `COPILOT_HOME` and wrote all artifacts (skills, agents, `copilot-instructions.md`, the session hook) to `~/.copilot` even when the user had relocated their Copilot home, making them undiscoverable by Copilot CLI. Resolution now follows `--config-dir` > `COPILOT_CONFIG_DIR` > `COPILOT_HOME` > `~/.copilot`, mirroring the existing `CODEX_HOME` handling. Uninstall uses the same resolver and stays symmetric. (#812)