Install Moltin cart to Symfony 2 - symfony

Question

I can not get Moltin Cart plugin to install for symfony 2.7. I get following issues when I try to install.
Problem 1
- Installation request for moltin/cart dev-master -> satisfiable by moltin/c
art[dev-master].
- moltin/cart dev-master requires moltin/tax dev-master -> no matching packa
ge found.
Potential causes:
- A typo in the package name
- The package is not available in a stable-enough version according to your min
imum-stability setting
This is my composr.lock
.....
"aliases": [],
"minimum-stability": "stable",
"stability-flags": [],
"prefer-stable": false,
"prefer-lowest": false,
"platform": {
"php": ">=5.3.3"
},
.....
And this is my composer.json complete file
{
"name": "symfony/framework-standard-edition",
"license": "MIT",
"type": "project",
"description": "The \"Symfony Standard Edition\" distribution",
"autoload": {
"psr-0": { "": "src/", "SymfonyStandard": "app/" }
},
"require": {
"php": ">=5.3.3",
"symfony/symfony": "2.5.*",
"doctrine/orm": "~2.2,>=2.2.3,<2.5",
"doctrine/dbal": "<2.5",
"doctrine/doctrine-bundle": "~1.2",
"twig/extensions": "~1.0",
"symfony/assetic-bundle": "~2.3",
"symfony/swiftmailer-bundle": "~2.3",
"symfony/monolog-bundle": "~2.4",
"sensio/distribution-bundle": "~3.0,>=3.0.12",
"sensio/framework-extra-bundle": "~3.0,>=3.0.2",
"incenteev/composer-parameter-handler": "~2.0",
"symfony/var-dumper": "^2.7",
"jms/serializer-bundle": "^1.0",
"symfony/finder": "^2.7",
"moltin/cart": "dev-master"
},
"require-dev": {
"sensio/generator-bundle": "~2.3"
},
"scripts": {
"post-root-package-install": [
"SymfonyStandard\\Composer::hookRootPackageInstall"
],
"post-install-cmd": [
"Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::removeSymfonyStandardFiles"
],
"post-update-cmd": [
"Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::removeSymfonyStandardFiles"
]
},
"config": {
"bin-dir": "bin"
},
"extra": {
"symfony-app-dir": "app",
"symfony-web-dir": "web",
"incenteev-parameters": {
"file": "app/config/parameters.yml"
},
"branch-alias": {
"dev-master": "2.5-dev"
}
}
}
This is Moltin/cart site page link. It would be great help if someone can look into it.

Answer 1

If you want to install a package that depends on non-stable packages, you will to explicitly require those packages too or lower the minimum stability setting in your project's Composer configuration.