Error in using composer to install a module in Magento 2.0

Question

I have used Composer for installing other modules specially from github and they worked fine. However I have problem installing the following module to Magento 2.0 . The module I want to install is fireGento_FastSimpleImport2: https://github.com/firegento/FireGento_FastSimpleImport2

and the composer name is: firegento/fastsimpleimport2

However when I write in terminal the following command in Magento root directory:

sudo composer require firegento/fastsimpleimport2

I get the follwing error:

[InvalidArgumentException]
Could not find package firegento/fastsimpleimport2 at any version for your minimum-stability (alpha) . Check the package spelling or your minimum-stability

I have contacted them and I'm waiting for their response, but sharing this here can also solve someone else's problem.

Update

This is our Magento 2.0.5 composer.json:

{
 "name": "magento/project-community-edition",
 "description": "eCommerce Platform for Growth (Community Edition)",
 "type": "project",
 "version": "2.0.5",
 "license": [
 "OSL-3.0",
 "AFL-3.0"
 ],
 "repositories": [
 {
 "type": "git",
 "url": "https://github.com/firegento/FireGento_FastSimpleImport2.git"
 },
 {
 "type": "composer",
 "url": "https://repo.magento.com/"
 }
 ],
 "require": {
 "magento/product-community-edition": "2.0.5",
 "composer/composer": "@alpha"
 },
 "require-dev": {
 "phpunit/phpunit": "4.1.0",
 "squizlabs/php_codesniffer": "1.5.3",
 "phpmd/phpmd": "2.3.*",
 "pdepend/pdepend": "2.2.2",
 "sjparkinson/static-review": "~4.1",
 "fabpot/php-cs-fixer": "~1.2",
 "lusitanian/oauth": "~0.3 <=0.7.0"
 },
 "config": {
 "use-include-path": true
 },
 "autoload": {
 "psr-4": {
 "Magento\\Framework\\": "lib/internal/Magento/Framework/",
 "Magento\\Setup\\": "setup/src/Magento/Setup/",
 "Magento\\": "app/code/Magento/"
 },
 "psr-0": {
 "": "app/code/"
 },
 "files": [
 "app/etc/NonComposerComponentRegistration.php"
 ]
 },
 "autoload-dev": {
 "psr-4": {
 "Magento\\Sniffs\\": "dev/tests/static/framework/Magento/Sniffs/",
 "Magento\\Tools\\": "dev/tools/Magento/Tools/",
 "Magento\\Tools\\Sanity\\": "dev/build/publication/sanity/Magento/Tools/Sanity/",
 "Magento\\TestFramework\\Inspection\\": "dev/tests/static/framework/Magento/TestFramework/Inspection/",
 "Magento\\TestFramework\\Utility\\": "dev/tests/static/framework/Magento/TestFramework/Utility/"
 }
 },
 "minimum-stability": "alpha",
 "prefer-stable": true,
 "extra": {
 "magento-force": "override"
 }
}

We run the following command from root of our magento installation: sudo composer require firegento/fastsimpleimport2

I still get the same error. Any thoughts?

• Steve Johnson: To install something from GitHub, I believe you have to modify composer.json to look in GitHub. Would you mind providing at least the repositories section of composer.json here?
• chamich: @SteveJohnson I updated my question

Answer 1

In order to install Github packages through composer.json you have to define it as repository like this:

{
 "repositories": [
 { "url":"https://github.com/firegento/FireGento_FastSimpleImport2.git",
 "type": "git"
 }
 ],
}

if that doesn't work, then open your terminal and enter

composer config repositories.fastsimpleimport2 vcs https://github.com/firegento/FireGento_FastSimpleImport2.git

after that run the require command again.

composer require firegento/fastsimpleimport2