When removing magento-hackathon/magento-composer-installer, Fatal error Class 'MagentoHackathon\Composer\Helper' not found in /var/www/vendor/magento-hackathon/magento-composer-installer/src/MagentoHackathon/Composer/Magento/Plugin.php on line 211

[kypnz]

Hello,

i'm in front of an exception when trying to remove the installer module.

To reproduce:

./composer clearcache
./composer config repositories.firegento composer http://packages.firegento.com
./composer require magento-hackathon/magento-composer-installer:@stable

it generate the following output:

./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)

• Installing symfony/console (v2.7.0)
  Loading from cache
• Installing justinrainbow/json-schema (1.4.1)
  Loading from cache
• Installing icecave/isolator (2.3.0)
  Loading from cache
  • Installing eloquent/pops (3.1.1)
    Loading from cache
• Installing eloquent/liberator (1.1.1)
  Loading from cache
• Installing eloquent/enumeration (5.1.0)
  Loading from cache
• Installing eloquent/composer-config-reader (2.0.0)
  Loading from cache
• Installing magento-hackathon/magento-composer-installer (3.0.2)
  Loading from cache

you may want to add the packages.magento.com repository to composer.
add it with: composer.phar config -g repositories.magento composer https?://packages.magento.com
symfony/console suggests installing symfony/event-dispatcher ()
symfony/console suggests installing symfony/process ()
symfony/console suggests installing psr/log (For using the console logger)
icecave/isolator suggests installing eloquent/asplode (Drop-in exception-based error handling.)
magento-hackathon/magento-composer-installer suggests installing ext-SPL_Types (*)
Writing lock file
Generating autoload files

./composer install

you may want to add the packages.magento.com repository to composer.
add it with: composer.phar config -g repositories.magento composer https?://packages.magento.com
Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Nothing to install or update
Generating autoload files

./composer remove magento-hackathon/magento-composer-installer

you may want to add the packages.magento.com repository to composer.
add it with: composer.phar config -g repositories.magento composer https?://packages.magento.com
Loading composer repositories with package information
Updating dependencies (including require-dev)

• Removing magento-hackathon/magento-composer-installer (3.0.2)
  Writing lock file
  Generating autoload files

Fatal error: Class 'MagentoHackathon\Composer\Helper' not found in /var/www/vendor/magento-hackathon/magento-composer-installer/src/MagentoHackathon/Composer/Magento/Plugin.php on line 211

./composer info --installed

you may want to add the packages.magento.com repository to composer.
add it with: composer.phar config -g repositories.magento composer https?://packages.magento.com
colinmollenhour/modman 1.12 Module Manager
eloquent/composer-config-reader 2.0.0 A light-weight component for reading Composer configuration files.
eloquent/enumeration 5.1.0 An enumeration implementation for PHP.
eloquent/liberator 1.1.1 A proxy for circumventing PHP access modifier restrictions.
eloquent/pops 3.1.1 PHP object proxy system.
icecave/isolator 2.3.0 Dependency injection for global functions.
justinrainbow/json-schema 1.4.1 A library to validate a json schema.
magento-hackathon/magento-composer-installer 3.0.2 Composer installer for Magento modules
symfony/console v2.7.0 Symfony Console Component
theseer/autoload 1.17.0 A tool and library to generate autoload code.
theseer/directoryscanner 1.3.1 A recursive directory scanner and filter
zetacomponents/base 1.9 The Base package provides the basic infrastructure that all packages rely on. Therefore every component relies on this package.
zetacomponents/console-tools 1.7 A set of classes to do different actions with the console (also called shell). It can render a progress bar, tables and a status bar and contains a class ...

And module is still installed

php -v

PHP 5.6.4-4ubuntu6 (cli) (built: Apr 17 2015 15:47:51)
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2014 Zend Technologies
with the ionCube PHP Loader v4.7.4, Copyright (c) 2002-2014, by ionCube Ltd., and
with Zend OPcache v7.0.4-dev, Copyright (c) 1999-2014, by Zend Technologies

Let me know if you require more info.

Regards

[HenningCash]

Seems like composer tries to run the plugin even if it was just uninstalled. You could remove the package from composer.json manually and run composer update --no-plugins.

[Flyingmana]

yes, every update/remove of a composer plugin should happen with the --no-plugins argument as described here: https://github.com/Cotya/magento-composer-installer#update-the-installer

I probably should add a note, it is also true for remove

[kypnz]

Hello,
thanks for your feedback. It fix it.
Another solution is to request a second time removing module: everything become fine and error message disappear.

But just one comment: I've look for a solution for this issue. I'm sure that not everybody wi'll do it. If you can find a more explicit way to specify it (I have no solution to purpose), it'll be a great help for your module 's users and will let earn you some support time.

But anyway, thanks for your good job!

[Flyingmana]

I reopen, as this did make problems multiple times, and I plan to build a workaround for this. (not today)

Possible Solution: block "remove/update" of the installer when --no-plugins is missing and output an information what the problem is and how they should remove/update the installer.

Does this sound like a good solution?

[pdobrigkeit]

I am having the same problem with the PHP Parser. It clashes with the Magento Varien autoloader and gives Warnings. How do you proceed from here?

[roman204]

@pdobrigkeit got that also with the nikic/php-parser and fixed it by adding it to psr-4 autoloadarray in compser.json maybe it will help you

   "autoload": {
        "psr-0": {
            "": [
                "htdocs/app",
                "htdocs/app/code/local",
                "htdocs/app/code/community",
                "htdocs/app/code/core",
                "htdocs/downloader/lib",
                "htdocs/lib"
            ]
        },
        "psr-4": {
            "PhpParser\\": "vendor/nikic/php-parser/lib/PhpParser/"
        }
    },

[camdixon]

Also for me I followed the first posted solution, cleared the Magento Cache, removed composer.lock file, and deleted all of vendor/ directory. Worked for me. Thanks!