$ composer install Loading composer repositories with package information Installing dependencies (including require-dev) from lock file Package operations: 139 installs, 0 updates, 0 removals - Installing ocramius/package-versions (1.4.0): Loading from cache Plugin installation failed, rolling back - Removing ocramius/package-versions (1.4.0) [RuntimeException] Could not delete /home/vagrant/code/myproject/vendor/ocramius/package-versions/src/PackageVersions: install [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--no-custom-installers] [--no-autoloader] [--no-scripts] [--no-progress] [--no-suggest] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--apcu-autoloader] [--ignore-platform-reqs] [--] [<packages>]...
ネットで調べると以下の記事がヒット。
Composer plugin installation failed · Issue #1240 · laravel/homestead · GitHub
https://github.com/laravel/homestead/issues/1240
以下のようにオプションを追加してエラー回避。
$ composer install --no-plugins --no-scripts