"Composer update for Laravel: Requirements could not be resolved to an installable set of packages."

Question

I recently tried updating my laravel project using composer, using this in the requirements section:

"require": {

    "laravel/framework": "4.0.*",

        "way/generators": "dev-master",

        "taylorotwell/laravel-oauth2": "0.2.*",

        "juy/profiler" : "dev-master", 

        "cviebrock/eloquent-sluggable": "1.0.*"

    },

I received the following error:

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

    - Conclusion: don't install laravel/framework v4.0.0-BETA3

    - way/generators dev-master requires illuminate/support ~4.1 -> satisfiable by laravel/framework[4.1.x-dev, 4.2.x-dev], illuminate/support[4.1.x-dev, 4.2.x-dev, v4.1.0, v4.1.1, v4.1.10, v4.1.11, v4.1.12, v4.1.13, v4.1.14, v4.1.15, v4.1.16, v4.1.17, v4.1.18, v4.1.19, v4.1.2, v4.1.20, v4.1.21, v4.1.22, v4.1.23, v4.1.3, v4.1.4, v4.1.5, v4.1.6, v4.1.7, v4.1.8, v4.1.9].

    - way/generators dev-master requires illuminate/support ~4.1 -> satisfiable by laravel/framework[4.1.x-dev, 4.2.x-dev], illuminate/support[4.1.x-dev, 4.2.x-dev, v4.1.0, v4.1.1, v4.1.10, v4.1.11, v4.1.12, v4.1.13, v4.1.14, v4.1.15, v4.1.16, v4.1.17, v4.1.18, v4.1.19, v4.1.2, v4.1.20, v4.1.21, v4.1.22, v4.1.23, v4.1.3, v4.1.4, v4.1.5, v4.1.6, v4.1.7, v4.1.8, v4.1.9].

    - don't install illuminate/support 4.1.x-dev|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support 4.2.x-dev|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.0|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.1|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.10|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.11|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.12|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.13|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.14|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.15|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.16|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.17|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.18|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.19|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.2|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.20|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.21|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.22|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.23|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.3|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.4|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.5|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.6|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.7|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.8|don't install laravel/framework v4.0.0-BETA2

    - don't install illuminate/support v4.1.9|don't install laravel/framework v4.0.0-BETA2

    - 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, 4.2.x-dev].

    - Installation request for laravel/framework 4.0.* -> satisfiable by laravel/framework[4.0.x-dev, v4.0.0, v4.0.0-BETA2, 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 way/generators dev-master -> satisfiable by way/generators[dev-master].

I've never seen this before. I tried removing the "cviebrock/eloquent-sluggable": "1.0.*" line (because it was recently added), but I am seeing the same error. Any ideas? Thank you.

Answer 1

way/generators dev-master requires illuminate/support ~4.1

There's your conflict, as laravel 4.0.* will install illuminate/support based on which laravel version you use: https://github.com/laravel/framework/blob/master/composer.json#L61

Edit: I.e. you'll need to downgrade way/generators to 1.1 as laravel 4.0.* is required by taylorotwell/laravel-oauth2.