Error “could not delete” with Composer on Vagrant

Question

I have a Vagrant running Linux and I\'m trying to install Symfony.

After the command composer create-project symfony/framework-standard-edition ./ \"2.5.*\"

Answer 1

I was trying to update project dependencies (using composer update) during a Laravel Framework upgrade exercise in my local Homestead environment (having run vagrant ssh to login as the default "vagrant" user) and none of the previous answers in this thread made any difference to the...

Could not delete /home/vagrant/projects/projectname/vendor/kylekatarnls/update-helper/src/UpdateHelper

...error message I repeatedly encountered.

The only thing that worked for me was to include a composer option as follows:

composer update --no-plugins

Plugins are used to alter or extend the functionality of Composer. The above command disables all installed plugins. Unfortunately, I'm not clear as to why this command worked for me, as I certainly haven't written any plugins myself. All I can conclude is that there was an erroneous Composer plugin installed that was causing this issue.