Lighthouse: Installation issue with laravel 5.8

[basudebpalfreelancer]

Describe the bug
lighthouse does not install on laravel 5.8

Expected behavior

Should successfully install in laravel 5.8

Output/Logs

Add in log output/error messages here

λ composer require nuwave/lighthouse
Using version ^2.6 for nuwave/lighthouse
./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
- Conclusion: remove laravel/framework v5.8.3
- Conclusion: don't install laravel/framework v5.8.3
- nuwave/lighthouse 2.x-dev requires illuminate/validation 5.5.|5.6.|5.7.* -> satisf
[5.5.x-dev, 5.6.x-dev, 5.7.17, 5.7.18, 5.7.19, 5.7.x-dev, v5.5.0, v5.5.16, v5.5.17, v5.5.2
5.5.35, v5.5.36, v5.5.37, v5.5.39, v5.5.40, v5.5.41, v5.5.43, v5.5.44, v5.6.0, v5.6.1, v5.
3, v5.6.14, v5.6.15, v5.6.16, v5.6.17, v5.6.19, v5.6.2, v5.6.20, v5.6.21, v5.6.22, v5.6.23
5.6.27, v5.6.28, v5.6.29, v5.6.3, v5.6.30, v5.6.31, v5.6.32, v5.6.33, v5.6.34, v5.6.35, v5
39, v5.6.4, v5.6.5, v5.6.6, v5.6.7, v5.6.8, v5.6.9, v5.7.0, v5.7.1, v5.7.10, v5.7.11, v5.7
v5.7.22, v5.7.23, v5.7.26, v5.7.27, v5.7.28, v5.7.3, v5.7.4, v5.7.5, v5.7.6, v5.7.7, v5.7
- nuwave/lighthouse v2.6.0 requires illuminate/validation 5.5.|5.6.|5.7.* -> satisfi
5.5.x-dev, 5.6.x-dev, 5.7.17, 5.7.18, 5.7.19, 5.7.x-dev, v5.5.0, v5.5.16, v5.5.17, v5.5.2,
.5.35, v5.5.36, v5.5.37, v5.5.39, v5.5.40, v5.5.41, v5.5.43, v5.5.44, v5.6.0, v5.6.1, v5.6
, v5.6.14, v5.6.15, v5.6.16, v5.6.17, v5.6.19, v5.6.2, v5.6.20, v5.6.21, v5.6.22, v5.6.23,
.6.27, v5.6.28, v5.6.29, v5.6.3, v5.6.30, v5.6.31, v5.6.32, v5.6.33, v5.6.34, v5.6.35, v5.
9, v5.6.4, v5.6.5, v5.6.6, v5.6.7, v5.6.8, v5.6.9, v5.7.0, v5.7.1, v5.7.10, v5.7.11, v5.7.
v5.7.22, v5.7.23, v5.7.26, v5.7.27, v5.7.28, v5.7.3, v5.7.4, v5.7.5, v5.7.6, v5.7.7, v5.7.
- nuwave/lighthouse v2.6.1 requires illuminate/validation 5.5.|5.6.|5.7.* -> satisfi
5.5.x-dev, 5.6.x-dev, 5.7.17, 5.7.18, 5.7.19, 5.7.x-dev, v5.5.0, v5.5.16, v5.5.17, v5.5.2,
.5.35, v5.5.36, v5.5.37, v5.5.39, v5.5.40, v5.5.41, v5.5.43, v5.5.44, v5.6.0, v5.6.1, v5.6
, v5.6.14, v5.6.15, v5.6.16, v5.6.17, v5.6.19, v5.6.2, v5.6.20, v5.6.21, v5.6.22, v5.6.23,
.6.27, v5.6.28, v5.6.29, v5.6.3, v5.6.30, v5.6.31, v5.6.32, v5.6.33, v5.6.34, v5.6.35, v5.
9, v5.6.4, v5.6.5, v5.6.6, v5.6.7, v5.6.8, v5.6.9, v5.7.0, v5.7.1, v5.7.10, v5.7.11, v5.7.
v5.7.22, v5.7.23, v5.7.26, v5.7.27, v5.7.28, v5.7.3, v5.7.4, v5.7.5, v5.7.6, v5.7.7, v5.7.
- nuwave/lighthouse v2.6.2 requires illuminate/validation 5.5.|5.6.|5.7.* -> satisfi
5.5.x-dev, 5.6.x-dev, 5.7.17, 5.7.18, 5.7.19, 5.7.x-dev, v5.5.0, v5.5.16, v5.5.17, v5.5.2,
.5.35, v5.5.36, v5.5.37, v5.5.39, v5.5.40, v5.5.41, v5.5.43, v5.5.44, v5.6.0, v5.6.1, v5.6
, v5.6.14, v5.6.15, v5.6.16, v5.6.17, v5.6.19, v5.6.2, v5.6.20, v5.6.21, v5.6.22, v5.6.23,
.6.27, v5.6.28, v5.6.29, v5.6.3, v5.6.30, v5.6.31, v5.6.32, v5.6.33, v5.6.34, v5.6.35, v5.
9, v5.6.4, v5.6.5, v5.6.6, v5.6.7, v5.6.8, v5.6.9, v5.7.0, v5.7.1, v5.7.10, v5.7.11, v5.7.
v5.7.22, v5.7.23, v5.7.26, v5.7.27, v5.7.28, v5.7.3, v5.7.4, v5.7.5, v5.7.6, v5.7.7, v5.7.
- nuwave/lighthouse v2.6.3 requires illuminate/validation 5.5.|5.6.|5.7.* -> satisfi
5.5.x-dev, 5.6.x-dev, 5.7.17, 5.7.18, 5.7.19, 5.7.x-dev, v5.5.0, v5.5.16, v5.5.17, v5.5.2,
.5.35, v5.5.36, v5.5.37, v5.5.39, v5.5.40, v5.5.41, v5.5.43, v5.5.44, v5.6.0, v5.6.1, v5.6
, v5.6.14, v5.6.15, v5.6.16, v5.6.17, v5.6.19, v5.6.2, v5.6.20, v5.6.21, v5.6.22, v5.6.23,
.6.27, v5.6.28, v5.6.29, v5.6.3, v5.6.30, v5.6.31, v5.6.32, v5.6.33, v5.6.34, v5.6.35, v5.
9, v5.6.4, v5.6.5, v5.6.6, v5.6.7, v5.6.8, v5.6.9, v5.7.0, v5.7.1, v5.7.10, v5.7.11, v5.7.
v5.7.22, v5.7.23, v5.7.26, v5.7.27, v5.7.28, v5.7.3, v5.7.4, v5.7.5, v5.7.6, v5.7.7, v5.7.
- nuwave/lighthouse v2.6.4 requires illuminate/validation 5.5.|5.6.|5.7.* -> satisfi
5.5.x-dev, 5.6.x-dev, 5.7.17, 5.7.18, 5.7.19, 5.7.x-dev, v5.5.0, v5.5.16, v5.5.17, v5.5.2,
.5.35, v5.5.36, v5.5.37, v5.5.39, v5.5.40, v5.5.41, v5.5.43, v5.5.44, v5.6.0, v5.6.1, v5.6
, v5.6.14, v5.6.15, v5.6.16, v5.6.17, v5.6.19, v5.6.2, v5.6.20, v5.6.21, v5.6.22, v5.6.23,
.6.27, v5.6.28, v5.6.29, v5.6.3, v5.6.30, v5.6.31, v5.6.32, v5.6.33, v5.6.34, v5.6.35, v5.
9, v5.6.4, v5.6.5, v5.6.6, v5.6.7, v5.6.8, v5.6.9, v5.7.0, v5.7.1, v5.7.10, v5.7.11, v5.7.
v5.7.22, v5.7.23, v5.7.26, v5.7.27, v5.7.28, v5.7.3, v5.7.4, v5.7.5, v5.7.6, v5.7.7, v5.7.
- don't install illuminate/validation 5.5.x-dev|don't install laravel/framework v5.8.3
- don't install illuminate/validation 5.6.x-dev|don't install laravel/framework v5.8.3
- don't install illuminate/validation 5.7.17|don't install laravel/framework v5.8.3
- don't install illuminate/validation 5.7.18|don't install laravel/framework v5.8.3
- don't install illuminate/validation 5.7.19|don't install laravel/framework v5.8.3
- don't install illuminate/validation 5.7.x-dev|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.5.0|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.5.16|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.5.17|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.5.2|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.5.28|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.5.33|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.5.34|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.5.35|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.5.36|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.5.37|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.5.39|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.5.40|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.5.41|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.5.43|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.5.44|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.0|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.1|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.10|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.11|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.12|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.13|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.14|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.15|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.16|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.17|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.19|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.2|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.20|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.21|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.22|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.23|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.24|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.25|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.26|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.27|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.28|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.29|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.3|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.30|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.31|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.32|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.33|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.34|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.35|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.36|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.37|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.38|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.39|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.4|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.5|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.6|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.7|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.8|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.6.9|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.0|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.1|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.10|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.11|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.15|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.2|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.20|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.21|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.22|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.23|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.26|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.27|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.28|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.3|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.4|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.5|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.6|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.7|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.8|don't install laravel/framework v5.8.3
- don't install illuminate/validation v5.7.9|don't install laravel/framework v5.8.3
- Installation request for laravel/framework (locked at v5.8.3, required as 5.8.*) ->
rk[v5.8.3].
- Installation request for nuwave/lighthouse ^2.6 -> satisfiable by nuwave/lighthouse[
2, v2.6.3, v2.6.4].

Installation failed, reverting ./composer.json to its original content.

Environment

Lighthouse Version: ^2.6
Laravel Version: 5.8.3
PHP Version: 7.3.2

Additional context

[basudebpalfreelancer]

Seems like lighthouse is trying to install illuminate/validation 5.5.|5.6.|5.7.* , which is causing this issue. Please help.

[spawnia]

v2.x is not compatible with Laravel 5.8, try installing dev-master instead. v3 will be out soon, too.

[kevinpallado]

Still the problem exists,

This is my composer.json content

{ "name": "laravel/laravel", "description": "The Laravel Framework.", "keywords": ["framework", "laravel"], "license": "MIT", "type": "project", "require": { "php": ">=5.6.4", "doctrine/dbal": "^2.5", "laravel/framework": "5.4.*", "laravel/tinker": "~1.0" }, "require-dev": { "fzaninotto/faker": "~1.4", "mockery/mockery": "0.9.*", "phpunit/phpunit": "~5.7" }, "autoload": { "classmap": [ "database" ], "psr-4": { "App\\": "app/" } }, "autoload-dev": { "psr-4": { "Tests\\": "tests/" } }, "scripts": { "post-root-package-install": [ "php -r \"file_exists('.env') || copy('.env.example', '.env');\"" ], "post-create-project-cmd": [ "php artisan key:generate" ], "post-install-cmd": [ "Illuminate\\Foundation\\ComposerScripts::postInstall", "php artisan optimize" ], "post-update-cmd": [ "Illuminate\\Foundation\\ComposerScripts::postUpdate", "php artisan optimize" ] }, "config": { "preferred-install": "dist", "sort-packages": true, "optimize-autoloader": true } }

can anyone figure this out? I am using this tutorial

[enzonotario]

Hey @kevinpallado it seems that you have laravel 5.4, not 5.8. Lighthouse needs at least laravel 5.5. And you may want to install more recent versions of Lighthouse and Laravel (I would say Lighthouse 4.6 and Laravel 6).
I would recommend firstly upgrade Laravel (following their guidelines). Then install Lighthouse should be easy.