How can I resolve Your requirements could not be resolved to an installable set of packages error

Question

When I run composer update I receive some wired output     Here is my composer json look like          name    laravel laravel        description    The Laravel Framework     keywords     framework    laravel         license    MIT        repositories               type    vcs            url    https   github com Zizaco ardent git               require-dev              phpunit phpunit    4 3                require              laravel framework    4 2               laravelbook ardent    dev-master as 2 4 0             zizaco entrust    dev-master             sebklaus profiler    dev-master             doctrine dbal    dev-master              autoload              classmap                  app commands                app controllers                app models                app database migrations    app database seeds    app tests                app libraries                        scripts              post-install-cmd                  php artisan clear-compiled                 php artisan optimize                      post-update-cmd                  php artisan clear-compiled                 php artisan optimize                      post-create-project-cmd                  php artisan key generate                        config              preferred-install    dist              minimum-stability    stable      How do I fix that

User · Accepted Answer

Your software dependencies have an incompatible version conflict.

At the same time you want to install any Laravel 4.2.x version, and "zizaco/entrust" from its master branch. And that master branch requires at least Laravel 5.0 (roughly speaking).

The problem comes from the dependency on branches. It's likely that the package zizaco/entrust once was using Laravel 4.2 in its master branch, and that you were able to install your dependencies at that day. But the very moment this branch gets updated with an incompatible version requirement, you will never ever be able to run composer update and get updated dependencies.

Always use tagged versions! Ideally you use a relaxed version requirement that allows for compatible updates. This should be expressed as a tilde-two-number version requirement: ~1.2 would install a version 1.2.0 and up (like 1.2.99 or 1.2.100), and also 1.3 and up. If you need a certain patch release: Caret-three-number version ^1.2.10 will install 1.2.10 or up, also 1.3 and up.

Using this version requirement instead of dev-master will allow you to use released versions instead of the unstable state in the master branch, and allows you to address the most recent version that still works with Laravel 4.2. I guess that would be zizaco/entrust version 1.3.0, but version 1.2 would also qualify. Go with "zizaco/entrust": "~1.2".

User · Answer

config        platform          ext-pcntl    7 2        ext-posix    7 2

User · Answer

CAUSE   The error is happening because your project folder is owned by the root user   SOLUTION  Change ownership to the currently signed in user and not the root user  If you only have root as the sole user  create another user with root privileges     sudo chown -R current user  my project directory   then    composer install

User · Answer

I solved the same issue setting  laravel framework  dependency version from   8 0  to   7 0    After that running composer update --ignore-platform-reqs simply worked  composer json

User · Answer

Just activate the curl in the php ini file   extension php curl dll   to  extension php curl dll   and then composer install

User · Answer

I encountered this problem in Laravel 5 8  what I did was to do composer require for each library and all where installed correctly   Like so   instead of adding it to the composer json file or specifying a version   composer require msurguy honeypot  dev-master   I instead did without specifying any version   composer require msurguy honeypot   I hope it helps  thanks

User · Answer

Add  barryvdh laravel-cors     0 7 3  at the end of require array inside composer json  Save composer json and run composer update  You are done

User · Answer

Run this command      composer install --ignore-platform-reqs   or      composer update --ignore-platform-reqs

User · Answer

I solved the same error  by adding  quot zizaco entrust quot    quot   quot  instead of the  quot zizaco entrust quot    quot  1 2 quot

User · Answer

I am facing the same issue  I am using  Lumen  microservice framework  I recently resolved the same issue by installing two packages -   sudo apt-get install php7 0-mbstring   sudo apt-get install php7 0-xml or sudo apt-get install php-xml   After installing this  you need to execute this command - composer update  Hope  it will resolve the issue  I work on my system

User · Answer

Were those dev-masters added automatically  Avoid them as unnecessary version constraints  for  any suitable version  use      or   dev  if you don t mind dev packages  My guess is that Entrust is the potential troublemaker   Also   minimum-stability    stable  imposes additional constraints  and   minimum-stability    dev    prefer-stable   true   is more conflict-free  consider it a rule of thumb

User · Answer

I use Windows 10 machine working with PHP 8 and Lavarel 8 and I got the same error  I used the following command  - composer update --ignore-platform-reqs to update all the packages regardless of the version conflicts

[laravel] How can I resolve "Your requirements could not be resolved to an installable set of packages" error?

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