composer global require fails where non global equivalent succeeds - php

Question

Im developing a package available at packagist as user/package. Installing it locally works just fine
composer require user/package
Creating a new project is also fine
composer create-project --prefer-dist user/package new-project
But the package is to be deployed globally
composer global require user/package
however this results in the following error log.
Changed current directory to /home/anders/.composer ./composer.json
has been updated Loading composer repositories with package
information Updating dependencies (including require-dev) Your
requirements could not be resolved to an installable set of packages.
Problem 1
- Installation request for user/package ^v0.0.3 -> satisfiable by user/package[v0.0.3].
- Conclusion: remove illuminate/container v5.5.2
- Conclusion: don't install illuminate/container v5.5.2
- don't install tightenco/collect v5.4.33|don't install laravel/framework v5.5.2
- don't install laravel/framework v5.5.2|remove tightenco/collect v5.4.33
- Installation request for illuminate/container (installed at v5.5.2) -> satisfiable by illuminate/container[v5.5.2],
laravel/framework[v5.5.2].
- Installation request for tightenco/collect (installed at v5.4.33) -> satisfiable by tightenco/collect[v5.4.33].
Installation failed, reverting ./composer.json to its original
content.
How can this be?
I have tried composer global clearcache
Deleted a composer.lock file I found directly under /home/anders/.composer/
Upgraded my dependencies (Laravel) from 5.5.x to 5.6.x with no effect
Even creating a fresh "laravel new blog" project and uploading to packagist fails with the same error message.
Here is my composer.json
{
"name": "user/package",
"description": "Package",
"keywords": ["framework", "laravel"],
"license": "MIT",
"type": "project",
"require": {
"php": ">=7.0.0",
"ajthinking/tinx": "^2.1",
"fideloper/proxy": "~3.3",
"guzzlehttp/guzzle": "^6.3",
"laravel/framework": "5.5.*",
"laravel/tinker": "~1.0"
},
"require-dev": {
"filp/whoops": "~2.0",
"fzaninotto/faker": "~1.4",
"mockery/mockery": "~1.0",
"phpunit/phpunit": "~6.0"
},
"autoload": {
"classmap": [
"database/seeds",
"database/factories"
],
"psr-4": {
"App\\": "app/"
}
},
"autoload-dev": {
"psr-4": {
"Tests\\": "tests/"
}
},
"extra": {
"laravel": {
"dont-discover": [
]
}
},
"scripts": {
"post-root-package-install": [
"#php -r \"file_exists('.env') || copy('.env.example', '.env');\""
],
"post-create-project-cmd": [
"#php artisan key:generate"
],
"post-autoload-dump": [
"Illuminate\\Foundation\\ComposerScripts::postAutoloadDump",
"#php artisan package:discover"
]
},
"config": {
"preferred-install": "dist",
"sort-packages": true,
"optimize-autoloader": true
},
"bin": [
"package"
]
}
Would really appreciate help interpreting the error log. Thanks!
Update
This is the content of /home/anders/.composer/
{
"require": {
"cpriego/valet-linux": "^2.0",
"laravel/installer": "^1.4",
"phpunit/phpunit": "^6.4",
"phpunit/dbunit": "^3.0"
}
}
Composer version: 1.6.5

Answer 1

If this is standalone tool, you should consider building PHAR for it. You can use kherge/box to simplify build process.
PHAR archive is completely standalone, so you'll get rid of all problems with conflicting global dependencies. It may also simplify installation (you need to just download archive and make it executable) for both global and local installation.