Using dev-master everywhere is what's wrong. You should never do that. I see that's what is written in the docs, so I'll make a PR to change that, sorry you had to read that.
IMO, your best option is to simply let Composer pick what versions it should use, instead of constraining it :
composer require sonata-project/news-bundle sonata-project/doctrine-orm-admin-bundle sonata-project/easy-extends-bundle friendsofsymfony/rest-bundle nelmio/api-doc-bundle sonata-project/classification-bundle
Using version ^3.0 for sonata-project/news-bundle
Using version ^3.1 for sonata-project/doctrine-orm-admin-bundle
Using version ^2.1 for sonata-project/easy-extends-bundle
Using version ^2.1 for friendsofsymfony/rest-bundle
Using version ^2.13 for nelmio/api-doc-bundle
Using version ^3.1 for sonata-project/classification-bundle
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
This does not work for me though I have this error :
Your requirements could not be resolved to an installable set of packages.
Problem 1
- sonata-project/user-bundle 3.0.1 requires friendsofsymfony/rest-bundle ^1.1 -> satisfiable by friendsofsymfony/rest-bundle[1.1.0, 1.2.0, 1.2.1, 1.2.2, 1.3.0, 1.3.1, 1.4.0, 1.4.0-RC1, 1.4.1, 1.4.2, 1.5.0, 1.5.0-RC1, 1.5.0-RC2, 1.5.0-RC3, 1.5.0-RC4, 1.5.0-RC5, 1.5.1, 1.5.2, 1.5.3, 1.5.x-dev, 1.6.0, 1.6.0-RC1, 1.6.0-RC2, 1.6.1, 1.7.0, 1.7.1, 1.7.2, 1.7.3, 1.7.4, 1.7.6, 1.7.7, 1.7.8, 1.7.9, 1.7.x-dev, 1.8.0, 1.8.0-BETA1, 1.8.0-BETA2, 1.8.x-dev] but these conflict with your requirements or minimum-stability.
- sonata-project/user-bundle 3.0.0 requires friendsofsymfony/rest-bundle ^1.1 -> satisfiable by friendsofsymfony/rest-bundle[1.1.0, 1.2.0, 1.2.1, 1.2.2, 1.3.0, 1.3.1, 1.4.0, 1.4.0-RC1, 1.4.1, 1.4.2, 1.5.0, 1.5.0-RC1, 1.5.0-RC2, 1.5.0-RC3, 1.5.0-RC4, 1.5.0-RC5, 1.5.1, 1.5.2, 1.5.3, 1.5.x-dev, 1.6.0, 1.6.0-RC1, 1.6.0-RC2, 1.6.1, 1.7.0, 1.7.1, 1.7.2, 1.7.3, 1.7.4, 1.7.6, 1.7.7, 1.7.8, 1.7.9, 1.7.x-dev, 1.8.0, 1.8.0-BETA1, 1.8.0-BETA2, 1.8.x-dev] but these conflict with your requirements or minimum-stability.
- Installation request for sonata-project/news-bundle ^3.0 -> satisfiable by sonata-project/news-bundle[3.0.0].
- friendsofsymfony/rest-bundle 2.1.0 conflicts with sonata-project/user-bundle[3.1.0].
- sonata-project/news-bundle 3.0.0 requires sonata-project/user-bundle ^3.0 -> satisfiable by sonata-project/user-bundle[3.0.0, 3.0.1, 3.1.0].
- Installation request for friendsofsymfony/rest-bundle ^2.1 -> satisfiable by friendsofsymfony/rest-bundle[2.1.0].
The doc says "friendsofsymfony/rest-bundle and nelmio/api-doc-bundle are needed only if you use the API." So let's say you don't :
composer require sonata-project/news-bundle sonata-project/doctrine-orm-admin-bundle sonata-project/easy-extends-bundle sonata-project/classification-bundle
Using version ^3.0 for sonata-project/news-bundle
Using version ^3.1 for sonata-project/doctrine-orm-admin-bundle
Using version ^2.1 for sonata-project/easy-extends-bundle
Using version ^3.1 for sonata-project/classification-bundle
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
- Installing twig/twig (v1.26.1)
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- Installing symfony/polyfill-mbstring (v1.2.0)
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- Installing psr/log (1.0.2)
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- Installing doctrine/lexer (v1.0.1)
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- Installing doctrine/inflector (v1.1.0)
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- Installing doctrine/collections (v1.3.0)
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- Installing doctrine/cache (v1.6.0)
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- Installing doctrine/annotations (v1.2.7)
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- Installing doctrine/common (v2.6.1)
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- Installing symfony/polyfill-apcu (v1.2.0)
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- Installing symfony/security-acl (v3.0.0)
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- Installing symfony/symfony (v2.8.12)
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- Installing symfony/polyfill-php54 (v1.2.0)
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- Installing symfony/polyfill-intl-icu (v1.2.0)
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- Installing paragonie/random_compat (v2.0.3)
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- Installing symfony/polyfill-php70 (v1.2.0)
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- Installing ircmaxell/password-compat (v1.0.4)
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- Installing symfony/polyfill-php55 (v1.2.0)
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- Installing cocur/slugify (v2.3)
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- Installing sonata-project/core-bundle (3.1.1)
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- Installing sonata-project/datagrid-bundle (2.2)
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- Installing sonata-project/intl-bundle (2.2.4)
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- Installing sonata-project/easy-extends-bundle (2.1.10)
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- Installing sonata-project/cache (1.0.7)
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- Installing sonata-project/block-bundle (3.2.0)
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- Installing egeloen/json-builder (2.0.1)
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- Installing egeloen/ckeditor-bundle (4.0.5)
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- Installing michelf/php-markdown (1.6.0)
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- Installing knplabs/knp-markdown-bundle (1.5.1)
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- Installing sonata-project/formatter-bundle (3.0.1)
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- Installing twig/extensions (v1.4.0)
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- Installing sonata-project/exporter (1.7.0)
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- Installing knplabs/knp-menu (2.2.0)
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- Installing knplabs/knp-menu-bundle (2.1.3)
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- Installing sonata-project/admin-bundle (3.9.0)
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- Installing doctrine/instantiator (1.0.5)
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- Installing doctrine/dbal (v2.5.5)
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- Installing doctrine/orm (v2.5.5)
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- Installing sonata-project/doctrine-orm-admin-bundle (3.1.1)
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- Installing sonata-project/classification-bundle (3.1.0)
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- Installing phpoption/phpoption (1.5.0)
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- Installing phpcollection/phpcollection (0.5.0)
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- Installing jms/parser-lib (1.0.0)
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- Installing jms/metadata (1.5.1)
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- Installing jms/serializer (1.3.1)
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- Installing jms/serializer-bundle (1.1.0)
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- Installing kriswallsmith/buzz (v0.15)
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- Installing imagine/imagine (v0.6.3)
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- Installing knplabs/gaufrette (0.2.1)
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- Installing sonata-project/doctrine-extensions (1.0.2)
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- Installing zendframework/zenddiagnostics (v1.0.9)
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- Installing sonata-project/notification-bundle (3.0.0)
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- Installing sonata-project/media-bundle (3.3.0)
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- Installing sonata-project/google-authenticator (1.0.2)
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- Installing friendsofsymfony/user-bundle (v1.3.6)
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- Installing sonata-project/user-bundle (3.1.0)
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- Installing sonata-project/news-bundle (3.0.0)
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paragonie/random_compat suggests installing ext-libsodium (Provides a modern crypto API that can be used to generate random bytes.)
sonata-project/cache suggests installing doctrine/phpcr-odm (PHPCR ODM support)
sonata-project/cache suggests installing ext-memcached (Caching with ext/memcached)
sonata-project/cache suggests installing predis/predis (Install redis php)
sonata-project/block-bundle suggests installing sonata-project/cache-bundle (^3.0)
egeloen/ckeditor-bundle suggests installing egeloen/form-extra-bundle (Allows to load CKEditor asynchronously)
knplabs/knp-markdown-bundle suggests installing ext-sundown (to use optional support for php-sundown extension instead of php implementation)
sonata-project/exporter suggests installing propel/propel1 (^1.6)
knplabs/knp-menu suggests installing pimple/pimple (for the built-in implementations of the menu provider and renderer provider)
knplabs/knp-menu suggests installing silex/silex (for the integration with your silex application)
sonata-project/admin-bundle suggests installing jms/di-extra-bundle (Annotations for Admin definition)
sonata-project/admin-bundle suggests installing jms/translation-bundle (Extract message keys from Admins)
sonata-project/admin-bundle suggests installing sensio/generator-bundle (Add sonata:admin:generate command)
sonata-project/doctrine-orm-admin-bundle suggests installing simplethings/entity-audit-bundle (If you want to support for versioning of entities and their associations.)
jms/serializer-bundle suggests installing jms/di-extra-bundle (Required to get lazy loading (de)serialization visitors, ~1.3)
imagine/imagine suggests installing ext-imagick (to use the Imagick implementation)
imagine/imagine suggests installing ext-gmagick (to use the Gmagick implementation)
knplabs/gaufrette suggests installing amazonwebservices/aws-sdk-for-php (to use the legacy Amazon S3 adapters)
knplabs/gaufrette suggests installing aws/aws-sdk-php (to use the Amazon S3 adapter)
knplabs/gaufrette suggests installing dropbox-php/dropbox-php (to use the Dropbox adapter)
knplabs/gaufrette suggests installing google/apiclient (to use GoogleCloudStorage adapter)
knplabs/gaufrette suggests installing herzult/php-ssh (to use SFtp adapter)
knplabs/gaufrette suggests installing knplabs/knp-gaufrette-bundle (to use with Symfony2)
knplabs/gaufrette suggests installing microsoft/windowsazure (to use Microsoft Azure Blob Storage adapter)
knplabs/gaufrette suggests installing phpseclib/phpseclib (to use PhpseclibSftp adapter)
knplabs/gaufrette suggests installing rackspace/php-opencloud (to use Opencloud adapter)
zendframework/zenddiagnostics suggests installing sensiolabs/security-checker (Required by Check\SecurityAdvisory)
zendframework/zenddiagnostics suggests installing guzzle/http (Required by Check\GuzzleHttpService)
zendframework/zenddiagnostics suggests installing predis/predis (Required by Check\Redis)
zendframework/zenddiagnostics suggests installing videlalvaro/php-amqplib (Required by Check\RabbitMQ)
zendframework/zenddiagnostics suggests installing doctrine/migrations (Required by Check\DoctrineMigration)
sonata-project/notification-bundle suggests installing guzzle/guzzle (^3.9)
sonata-project/notification-bundle suggests installing liip/monitor-bundle (^1.0)
sonata-project/notification-bundle suggests installing videlalvaro/php-amqplib (^2.0)
sonata-project/media-bundle suggests installing liip/imagine-bundle (^0.9)
sonata-project/media-bundle suggests installing rackspace/php-opencloud (^1.6)
sonata-project/media-bundle suggests installing sonata-project/seo-bundle (^2.0)
sonata-project/media-bundle suggests installing tilleuls/ckeditor-sonata-media-bundle (^1.0)
friendsofsymfony/user-bundle suggests installing willdurand/propel-typehintable-behavior (Needed when using the propel implementation)
sonata-project/user-bundle suggests installing friendsofsymfony/rest-bundle (For using the public API methods.)
sonata-project/user-bundle suggests installing nelmio/api-doc-bundle (For using the public API methods.)
sonata-project/user-bundle suggests installing sonata-project/seo-bundle (For SEO breadcrumb block service usage)
Writing lock file
Generating autoload files
classification and easy extends are already auto-required by the bundle, so you just actually need to do this : composer require sonata-project/news-bundle sonata-project/doctrine-orm-admin-bundle
UPDATE: here is my PR
