COMPOSER Y U NO REPLACE OR PROVIDE PLATFORM PACKAGES

erp.txt

dzuelke-ltm1:wat dzuelke$ PHP_INI_SCAN_DIR= php -c /usr/local/etc/php/5.6/conf.d/ext-mongodb.ini $(which composer) require alcaeus/mongo-php-adapter:dev-master
./composer.json has been created
Loading composer repositories with package information
Updating dependencies (including require-dev)
  - Installing mongodb/mongodb (1.0.0)
    Loading from cache

  - Installing alcaeus/mongo-php-adapter (dev-master 4adcbe7)
    Cloning 4adcbe7a75f3c684bc1651ccdb7addefc089066c

Writing lock file
Generating autoload files
dzuelke-ltm1:wat dzuelke$ PHP_INI_SCAN_DIR= php -c /usr/local/etc/php/5.6/conf.d/ext-mongodb.ini $(which composer) require ext-mongo:*
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Writing lock file
Generating autoload files
dzuelke-ltm1:wat dzuelke$ rm -rf composer.lock vendor/
dzuelke-ltm1:wat dzuelke$ PHP_INI_SCAN_DIR= php -c /usr/local/etc/php/5.6/conf.d/ext-mongodb.ini $(which composer) update
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - The requested PHP extension ext-mongo * is missing from your system. Install or enable PHP's mongo extension.

dzuelke-ltm1:wat dzuelke$ ls
composer.json
dzuelke-ltm1:wat dzuelke$ cat composer.json 
{
    "require": {
        "alcaeus/mongo-php-adapter": "dev-master",
        "ext-mongo": "*"
    }
}
dzuelke-ltm1:wat dzuelke$ ls
composer.json
dzuelke-ltm1:wat dzuelke$ rm composer.json 
dzuelke-ltm1:wat dzuelke$ PHP_INI_SCAN_DIR= php -c /usr/local/etc/php/5.6/conf.d/ext-mongodb.ini $(which composer) require alcaeus/mongo-php-adapter:dev-composer-provide
./composer.json has been created
Loading composer repositories with package information
Updating dependencies (including require-dev)
  - Installing mongodb/mongodb (1.0.0)
    Loading from cache

  - Installing alcaeus/mongo-php-adapter (dev-composer-provide 698d301)
    Cloning 698d3012c306af299491aa166dc9aa29a4bce5b8

Writing lock file
Generating autoload files
dzuelke-ltm1:wat dzuelke$ PHP_INI_SCAN_DIR= php -c /usr/local/etc/php/5.6/conf.d/ext-mongodb.ini $(which composer) require ext-mongo:*
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Nothing to install or update
Writing lock file
Generating autoload files
dzuelke-ltm1:wat dzuelke$ PHP_INI_SCAN_DIR= php -c /usr/local/etc/php/5.6/conf.d/ext-mongodb.ini $(which composer) update
Loading composer repositories with package information
Updating dependencies (including require-dev)
Nothing to install or update
Generating autoload files
dzuelke-ltm1:wat dzuelke$ rm -rf composer.lock vendor/
dzuelke-ltm1:wat dzuelke$ PHP_INI_SCAN_DIR= php -c /usr/local/etc/php/5.6/conf.d/ext-mongodb.ini $(which composer) update
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - The requested PHP extension ext-mongo * is missing from your system. Install or enable PHP's mongo extension.

I do this weird PHP_INI_SCAN_DIR= php -c mongodb.ini to ensure my local ext-mongodb gets installed but my ext-mongo does not.