but these conflict with your requirements or minimum-stability

Question

I am creating my own slackbot. I decided to use project as a library to help me.

https://github.com/sagebind/slack-client/issues?utf8=%E2%9C%93&q=stability

Now I need to install it with composer.

So I used the command: composer require coderstephen/slack-client

...And I get the error:

 Problem 1     - Installation request for coderstephen/slack-client ^0.3.0 -> satisfiable by coderstephen/slack-client[v0.3.0].     - coderstephen/slack-client v0.3.0 requires devristo/phpws dev-master -> satisfiable by devristo/phpws[dev-master] but these conflict with your requirements or minimum-stability. 

Ok - So then I decided to change my stability level to "dev" in my composer.lock:

"aliases": [],     "minimum-stability": "dev",     "stability-flags": {         "devristo/phpws": 20     },     "prefer-stable": true,     "prefer-lowest": false,     "platform": {         "php": ">=5.5"     },     "platform-dev": [] 

Now I'm running out of ideas on what to do. The README says to do this step in composer.json but, no such settings exist:

Please note that the current version has unstable dependencies.

In order to install those dependencies, you can set "minimum-stability" in your composer.json, and recommend that you set "prefer-stable":

My composer.json:

{     "name": "coderstephen/slack-client",     "keywords": ["slack", "api", "realtime"],     "license": "MIT",     "description": "A better Slack client, with RTM API support",     "authors": [{         "name": "Stephen Coakley",         "email": "[email protected]"     }],     "require": {         "php": ">=5.5",         "devristo/phpws": "dev-master",         "evenement/evenement": "2.0.*",         "guzzlehttp/guzzle": "~6.0",         "react/event-loop": "^0.4.1",         "react/promise": "^2.2"     },     "require-dev": {         "phpunit/phpunit": "~4.6",         "fzaninotto/faker": "~1.4",         "apigen/apigen": "^4.1"     },     "autoload": {         "psr-4": {             "Slack\\": "src"         }     },     "autoload-dev": {         "psr-4": {             "Slack\\Tests\\": "tests"         }     } } 

Does anyone know some solutions I could try?

Answer 1

Add minimum-stability and prefer-stable to your composer.json (not composer.lock):

{     "name": "coderstephen/slack-client",     "keywords": ["slack", "api", "realtime"],     "license": "MIT",     "description": "A better Slack client, with RTM API support",     "authors": [{         "name": "Stephen Coakley",         "email": "[email protected]"     }],     "require": {         "php": ">=5.5",         "devristo/phpws": "dev-master",         "evenement/evenement": "2.0.*",         "guzzlehttp/guzzle": "~6.0",         "react/event-loop": "^0.4.1",         "react/promise": "^2.2"     },     "require-dev": {         "phpunit/phpunit": "~4.6",         "fzaninotto/faker": "~1.4",         "apigen/apigen": "^4.1"     },     "autoload": {         "psr-4": {             "Slack\\": "src"         }     },     "autoload-dev": {         "psr-4": {             "Slack\\Tests\\": "tests"         }     },     "minimum-stability": "dev",     "prefer-stable": true } 

Answer 2

For others having the same issue, these changes are best done using composer itself instead of manually modifying the composer.json file. Just run the following commands in the console:

$ composer config minimum-stability dev

$ composer config prefer-stable true

Now you can require and update the package:

$ composer require --no-update "vendor/package-name:version"

$ composer update

Available options (in order of stability) are dev, alpha, beta, RC, and stable