我有一个新安装的Laravel 7.10。*我想安装背包composer require backpack/generators --dev，但无法安装发电机。这是错误。
您的需求无法解析为一组可安装的软件包。
问题1
- laravel/framework的安装请求(锁定在v7.10.3，需要^7.0(->可由laravel/framework[v7.10.3]满足
- 背包/发电机的安装请求^3.0->可通过backck/generator[3.0.0，v3.0.1，v3.x-dev]满足
- 只能安装其中一个：backpack/crud[4.1.x-dev，4.0.61]
- 只能安装其中一个：backpack/crud[4.1.x-dev，4.0.61]
- 只能安装其中一个：backpack/crud[4.1.x-dev，4.0.61]
- 结论：安装backpack/crud 4.1.x-dev
- 背包/积垢的安装请求(锁定在4.0.61，要求为4.*(->背包/原油可满足[4.061]`
安装失败，正在还原/composer.json的原始内容。
这是我的composer.json
{
"name": "laravel/laravel",
"type": "project",
"description": "The Laravel Framework.",
"keywords": [
"framework",
"laravel"
],
"license": "MIT",
"require": {
"php": "^7.2.5",
"backpack/crud": "4.0.*",
"fideloper/proxy": "^4.2",
"fruitcake/laravel-cors": "^1.0",
"guzzlehttp/guzzle": "^6.3",
"laravel/framework": "^7.0",
"laravel/tinker": "^2.0"
},
"require-dev": {
"facade/ignition": "^2.0",
"fzaninotto/faker": "^1.9.1",
"mockery/mockery": "^1.3.1",
"nunomaduro/collision": "^4.1",
"phpunit/phpunit": "^8.5"
},
"config": {
"optimize-autoloader": true,
"preferred-install": "dist",
"sort-packages": true
},
"extra": {
"laravel": {
"dont-discover": []
}
},
"autoload": {
"psr-4": {
"App\": "app/"
},
"classmap": [
"database/seeds",
"database/factories"
]
},
"autoload-dev": {
"psr-4": {
"Tests\": "tests/"
}
},
"minimum-stability": "dev",
"prefer-stable": true,
"scripts": {
"post-autoload-dump": [
"Illuminate\Foundation\ComposerScripts::postAutoloadDump",
"@php artisan package:discover --ansi"
],
"post-root-package-install": [
"@php -r "file_exists('.env') || copy('.env.example', '.env');""
],
"post-create-project-cmd": [
"@php artisan key:generate --ansi"
]
}
}
问题是您将backpack/crud版本锁定为4.0.*，但对于backpack/generators，可满足的版本是：4.1.0, 4.1.1, 4.1.x-dev
所以你应该在composer.json:中更改这一行
"backpack/crud": "4.0.*",
到此：
"backpack/crud": "4.1.*",
然后更新composer包：
composer update
最后安装发电机包：
composer require backpack/generators --dev