Requirements could not be resolved to an installable set of packages

Question

I was trying to install jasonlewis/enhanced-router package in laravel-starter-kit, and when I run composer update it doesn't install and gives some errors. Initially I thought the problem was from the composer line for the jasonlewis/enhanced-router ("jasonlewis/enhanced-router": "dev-master") but I removed it and have the same error.

I tried to search for some similar problems, but can't figure out what is the dependency problem I'm getting.

Below is the result I get after running composer update:

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     - Conclusion: remove laravel/framework 4.0.x-dev     - Conclusion: don't install laravel/framework 4.0.x-dev     - Conclusion: don't install laravel/framework v4.0.10     - Conclusion: don't install laravel/framework v4.0.9     - Conclusion: don't install laravel/framework v4.0.8     - Conclusion: don't install laravel/framework v4.0.7     - Conclusion: don't install laravel/framework v4.0.6     - Conclusion: don't install laravel/framework v4.0.5     - Conclusion: don't install laravel/framework v4.0.4     - Conclusion: don't install laravel/framework v4.0.3     - Conclusion: don't install laravel/framework v4.0.2     - Conclusion: don't install laravel/framework v4.0.1     - Conclusion: don't install laravel/framework v4.0.0     - Conclusion: don't install laravel/framework v4.0.0-BETA4     - Installation request for zizaco/confide dev-master -> satisfiable by zizaco/confide[dev-master].     - Conclusion: don't install laravel/framework v4.0.0-BETA3     - bllim/datatables dev-master requires illuminate/filesystem >=4.0.0 -> satisfiable by laravel/framework[4.0.x-dev, 4.1.x-dev, dev-master, 4.2.x-dev, v4.0.0, v4.0.1, v4.0.10, v4.0.2, v4.0.3, v4.0.4, v4.0.5, v4.0.6, v4.0.7, v4.0.8, v4.0. 9, v4.1.0, v4.1.1, v4.1.10, v4.1.11, v4.1.12, v4.1.2, v4.1.3, v4.1.4, v4.1.5, v4.1.6, v4.1.7, v4.1.8, v4.1.9], illuminat e/filesystem[4.0.x-dev, 4.1.x-dev, dev-master, 4.2.x-dev, v4.0.0, v4.0.1, v4.0.10, v4.0.2, v4.0.3, v4.0.4, v4.0.5, v4.0. 6, v4.0.7, v4.0.8, v4.0.9, v4.1.0, v4.1.1, v4.1.10, v4.1.11, v4.1.12, v4.1.2, v4.1.3, v4.1.4, v4.1.5, v4.1.6, v4.1.7, v4 .1.8, v4.1.9].     - bllim/datatables 1.3.0 requires illuminate/filesystem >=4.0.0 -> satisfiable by laravel/framework[4.0.x-dev, 4.1.x -dev, dev-master, 4.2.x-dev, v4.0.0, v4.0.1, v4.0.10, v4.0.2, v4.0.3, v4.0.4, v4.0.5, v4.0.6, v4.0.7, v4.0.8, v4.0.9, v4 .1.0, v4.1.1, v4.1.10, v4.1.11, v4.1.12, v4.1.2, v4.1.3, v4.1.4, v4.1.5, v4.1.6, v4.1.7, v4.1.8, v4.1.9], illuminate/fil esystem[4.0.x-dev, 4.1.x-dev, dev-master, 4.2.x-dev, v4.0.0, v4.0.1, v4.0.10, v4.0.2, v4.0.3, v4.0.4, v4.0.5, v4.0.6, v4 .0.7, v4.0.8, v4.0.9, v4.1.0, v4.1.1, v4.1.10, v4.1.11, v4.1.12, v4.1.2, v4.1.3, v4.1.4, v4.1.5, v4.1.6, v4.1.7, v4.1.8,  v4.1.9].     - bllim/datatables dev-master requires illuminate/filesystem >=4.0.0 -> satisfiable by laravel/framework[4.0.x-dev, 4.1.x-dev, dev-master, 4.2.x-dev, v4.0.0, v4.0.1, v4.0.10, v4.0.2, v4.0.3, v4.0.4, v4.0.5, v4.0.6, v4.0.7, v4.0.8, v4.0. 9, v4.1.0, v4.1.1, v4.1.10, v4.1.11, v4.1.12, v4.1.2, v4.1.3, v4.1.4, v4.1.5, v4.1.6, v4.1.7, v4.1.8, v4.1.9], illuminat e/filesystem[4.0.x-dev, 4.1.x-dev, dev-master, 4.2.x-dev, v4.0.0, v4.0.1, v4.0.10, v4.0.2, v4.0.3, v4.0.4, v4.0.5, v4.0. 6, v4.0.7, v4.0.8, v4.0.9, v4.1.0, v4.1.1, v4.1.10, v4.1.11, v4.1.12, v4.1.2, v4.1.3, v4.1.4, v4.1.5, v4.1.6, v4.1.7, v4 .1.8, v4.1.9].     - bllim/datatables v1.3.1 requires illuminate/filesystem >=4.0.0 -> satisfiable by laravel/framework[4.0.x-dev, 4.1. x-dev, dev-master, 4.2.x-dev, v4.0.0, v4.0.1, v4.0.10, v4.0.2, v4.0.3, v4.0.4, v4.0.5, v4.0.6, v4.0.7, v4.0.8, v4.0.9, v 4.1.0, v4.1.1, v4.1.10, v4.1.11, v4.1.12, v4.1.2, v4.1.3, v4.1.4, v4.1.5, v4.1.6, v4.1.7, v4.1.8, v4.1.9], illuminate/fi lesystem[4.0.x-dev, 4.1.x-dev, dev-master, 4.2.x-dev, v4.0.0, v4.0.1, v4.0.10, v4.0.2, v4.0.3, v4.0.4, v4.0.5, v4.0.6, v 4.0.7, v4.0.8, v4.0.9, v4.1.0, v4.1.1, v4.1.10, v4.1.11, v4.1.12, v4.1.2, v4.1.3, v4.1.4, v4.1.5, v4.1.6, v4.1.7, v4.1.8 , v4.1.9].     - bllim/datatables v1.3.2 requires illuminate/filesystem >=4.0.0 -> satisfiable by laravel/framework[4.0.x-dev, 4.1. x-dev, dev-master, 4.2.x-dev, v4.0.0, v4.0.1, v4.0.10, v4.0.2, v4.0.3, v4.0.4, v4.0.5, v4.0.6, v4.0.7, v4.0.8, v4.0.9, v 4.1.0, v4.1.1, v4.1.10, v4.1.11, v4.1.12, v4.1.2, v4.1.3, v4.1.4, v4.1.5, v4.1.6, v4.1.7, v4.1.8, v4.1.9], illuminate/fi lesystem[4.0.x-dev, 4.1.x-dev, dev-master, 4.2.x-dev, v4.0.0, v4.0.1, v4.0.10, v4.0.2, v4.0.3, v4.0.4, v4.0.5, v4.0.6, v 4.0.7, v4.0.8, v4.0.9, v4.1.0, v4.1.1, v4.1.10, v4.1.11, v4.1.12, v4.1.2, v4.1.3, v4.1.4, v4.1.5, v4.1.6, v4.1.7, v4.1.8 , v4.1.9].     - bllim/datatables v1.3.3 requires illuminate/filesystem >=4.0.0 -> satisfiable by laravel/framework[4.0.x-dev, 4.1. x-dev, dev-master, 4.2.x-dev, v4.0.0, v4.0.1, v4.0.10, v4.0.2, v4.0.3, v4.0.4, v4.0.5, v4.0.6, v4.0.7, v4.0.8, v4.0.9, v 4.1.0, v4.1.1, v4.1.10, v4.1.11, v4.1.12, v4.1.2, v4.1.3, v4.1.4, v4.1.5, v4.1.6, v4.1.7, v4.1.8, v4.1.9], illuminate/fi lesystem[4.0.x-dev, 4.1.x-dev, dev-master, 4.2.x-dev, v4.0.0, v4.0.1, v4.0.10, v4.0.2, v4.0.3, v4.0.4, v4.0.5, v4.0.6, v 4.0.7, v4.0.8, v4.0.9, v4.1.0, v4.1.1, v4.1.10, v4.1.11, v4.1.12, v4.1.2, v4.1.3, v4.1.4, v4.1.5, v4.1.6, v4.1.7, v4.1.8 , v4.1.9].     - Can only install one of: laravel/framework[v4.0.0-BETA2, 4.1.x-dev].     - Can only install one of: laravel/framework[v4.0.0-BETA2, dev-master].     - Can only install one of: laravel/framework[v4.0.0-BETA2, 4.2.x-dev].     - Can only install one of: laravel/framework[v4.1.0, v4.0.0-BETA2].     - Can only install one of: laravel/framework[v4.1.1, v4.0.0-BETA2].     - Can only install one of: laravel/framework[v4.1.10, v4.0.0-BETA2].     - Can only install one of: laravel/framework[v4.1.11, v4.0.0-BETA2].     - Can only install one of: laravel/framework[v4.1.12, v4.0.0-BETA2].     - Can only install one of: laravel/framework[v4.1.2, v4.0.0-BETA2].     - Can only install one of: laravel/framework[v4.1.3, v4.0.0-BETA2].     - Can only install one of: laravel/framework[v4.1.4, v4.0.0-BETA2].     - Can only install one of: laravel/framework[v4.1.5, v4.0.0-BETA2].     - Can only install one of: laravel/framework[v4.1.6, v4.0.0-BETA2].     - Can only install one of: laravel/framework[v4.1.7, v4.0.0-BETA2].     - Can only install one of: laravel/framework[v4.1.8, v4.0.0-BETA2].     - Can only install one of: laravel/framework[v4.1.9, v4.0.0-BETA2].     - don't install illuminate/filesystem 4.0.x-dev|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.0.0|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.0.1|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.0.10|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.0.2|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.0.3|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.0.4|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.0.5|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.0.6|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.0.7|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.0.8|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.0.9|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem 4.1.x-dev|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem 4.2.x-dev|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.1.0|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.1.1|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.1.10|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.1.11|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.1.12|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.1.2|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.1.3|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.1.4|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.1.5|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.1.6|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.1.7|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.1.8|don't install laravel/framework v4.0.0-BETA2     - don't install illuminate/filesystem v4.1.9|don't install laravel/framework v4.0.0-BETA2         - don't install illuminate/filesystem dev-master|don't install laravel/framework v4.0.0-BETA2         - Installation request for laravel/framework 4.0.* -> satisfiable by laravel/framework[4.0.x-dev, v4.0.0, v4.0.0-BET     A2, v4.0.0-BETA3, v4.0.0-BETA4, v4.0.1, v4.0.10, v4.0.2, v4.0.3, v4.0.4, v4.0.5, v4.0.6, v4.0.7, v4.0.8, v4.0.9].         - Installation request for bllim/datatables * -> satisfiable by bllim/datatables[1.3.0, dev-master, v1.3.1, v1.3.2,     v1.3.3]. 

And my composer.json

{     "name": "andrew13/Laravel-4-Bootstrap-Starter-Site",     "description": "Laravel 4 Starter Site",     "keywords": ["laravel","Starter Site"],     "license": "MIT",     "authors": [         {             "name": "Andrew Elkins",             "homepage": "http://www.andrewelkins.com"         }     ],     "require": {         "laravel/framework": "4.0.*",         "twbs/bootstrap":  "3.0.0",         "zizaco/confide": "dev-master",         "zizaco/entrust": "dev-master",         "jasonlewis/basset": "dev-master",         "robclancy/presenter": "1.2.*",         "j20/php-uuid": "dev-master",         "bllim/datatables": "*",         "blueimp/jquery-file-upload": "dev-master",         "jasonlewis/enhanced-router": "dev-master"     },     "require-dev": {         "way/generators": "dev-master",         "mockery/mockery": "dev-master@dev",         "summerstreet/woodling": "0.1.*",         "barryvdh/laravel-ide-helper": "dev-master",         "leafo/lessphp": "v0.4.0",         "natxet/CssMin": "dev-master",         "lmammino/jsmin4assetic": "1.0.*"     },     "autoload": {         "classmap": [              "app/commands",             "app/controllers",             "app/library",             "app/models",             "app/presenters",             "app/database/migrations",             "app/database/seeds",             "app/tests/library"         ]     },     "scripts": {         "pre-update-cmd": [             "php artisan clear-compiled"         ],         "post-install-cmd": [             "php artisan optimize"         ],         "post-update-cmd": [             "php artisan optimize"         ]     },     "config": {         "preferred-install": "dist"     },     "minimum-stability": "dev" } 

I did not start from basic Laravel package, I've used andrew13/Laravel-4-Bootstrap-Starter-Site

Answer 1

Welcome to the worst feature of Composer!

So the problem is that you have conflict in your dependencies that is hard to spot.

You have a requirement for "laravel/framework": "4.0.*", in your composer.json. You also have a requirement for "zizaco/confide": "dev-master"

Looking in the composer.json for 'zizaco/confide' in github we see:

"illuminate/support": "4.1.x",

The Composer feature that's causing you a problem is that the replace keyword OPERATES GLOBALLY ACROSS THE WHOLE OF PACKAGIST.

So because the 'illuminate/support' package is replace'd by Laravel itself when Composer tries to satisfy the requirement of "illuminate/support": "4.1.x" it actually tries to download laravel version 4.1.x instead.

That clashes with your requirement of laravel version 4.0.* and so the set of dependencies can't be resolved.

I think there may be no trivial solution to your problem.

I was going to suggest specifying an earlier version of zizaco/confide rather than dev-master, that is dependent on illuminate/support version 4.0.x rather than 4.1.x - however that would mean switching from zizaco/confide 3.x to 2.x which is probably not acceptable.

The only other option would be to change your requirement from laravel 4.0.x to 4.1.* - which may or may not be acceptable, based on how much work that would cause you.