but these conflict with your requirements or minimum-stability - php

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": "me#stephencoakley.com"
}],
"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": "me#stephencoakley.com"
}],
"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

Answer 3

You should never manually edit the composer.lock file - it is an automatically generated file.
It looks like you've shown the composer.json file of the package you're trying to require rather than your own project's composer.json. The prefer-stable and minimum-stability properties should be added to your project root's composer.json file:
{
"name": "xFlare/slack-bot",
"description": "xFlare's Slack bot project",
"authors": [
{
"name": "xFlare"
}
],
"minimum-stability": "dev",
"prefer-stable": true,
"require": {
"php": ">=5.5",
"coderstephen/slack-client": "^0.3.0"
}
}

Answer 4

Usually, this issue has nothing to do directly with minimum-stability or prefer-stable option, but the case is just that you already use some library directly or indirectly, that is needed in another library you use but in a higher version.
My case: Got this error message for a Codeception library which needed a dependency of PHPUnit at least of version 6 and above (>= 6) , but it clashed with the lower version 4 of PHPUnit dependency, which I had installed/required directly already before prior it (as a package in my composer.json file). (my specific case could not use higher PHPUnit than version 6, since it was the last version which supported php version I used).
You might ask if it might affect your project, which already relies on the lower version of the library, perhaps there could be some breaking change, but I don't know if there could be some workaround for using one version for dependency and another version for own project.
Edit: I also had to issue a remove composer command for phpunit dependency, otherwise I was not able to increase my phpunit version directly.

Answer 5

You should add the minimum-stability in your composer.json not in the composer.lock. The option exists see https://getcomposer.org/doc/04-schema.md#minimum-stability

Answer 6

i had the error in a symfony4 project with own bundles.
my-foo-bundle dev-master requires ramsey/uuid-doctrine ^1.5 -> satisfiable by ramsey/uuid-doctrine[1.5.0, 1.6.0] but these conflict with your requirements or minimum-stability.
the solution, i search for "ramsey/uuid-doctrine" in my bundles and i found different requirements "ramsey/uuid-doctrine ^1.5" (in my-foo-bundle) and "ramsey/uuid-doctrine dev-master" (in my app-configuration). So i delete the requirement in the app/composer.json.
This worked for me.