Your requirements could not be resolved to an installable set of packages. で少してこずったので備忘録

使用言語:PHP 8.0.0;
フレームワーク:laravel;


```terminal:コマンドプロンプト
$composer create-project laravel/laravel bookup 
```
udemyのlaravel講座に従い、composerを利用して、bookupというプロジェクトを作る。

```terminal:コマンドプロンプト
C:\phpstudy>composer create-project laravel/laravel bookup
Creating a "laravel/laravel" project at "./bookup"
Installing laravel/laravel (v8.4.4)
  - Downloading laravel/laravel (v8.4.4)
  - Installing laravel/laravel (v8.4.4): Extracting archive
Created project in C:\phpstudy\bookup
> @php -r "file_exists('.env') || copy('.env.example', '.env');"
Loading composer repositories with package informati
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - laravel/framework[v8.12.0, ..., 8.x-dev] require league/flysystem ^1.1 -> satisfiable by league/flysystem[1.1.0, ..., 1.x-dev].
    - league/flysystem[1.1.0, ..., 1.x-dev] require ext-fileinfo * -> it is missing from your system. Install or enable PHP's fileinfo extension.
    - Root composer.json requires laravel/framework ^8.12 -> satisfiable by laravel/framework[v8.12.0, ..., 8.x-dev].

To enable extensions, verify that they are enabled in your .ini files:
    - C:\php\php.ini
You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.


```
途中までは頑張ってくれてるが、

```terminal:コマンドプロンプト
Your requirements could not be resolved to an installable set of packages.
```
赤文字でパッケージがありませんからcreateprojectできませんよ的な感じで怒られるので、なんかインストールするのかな？とか考えつつエラーを読むと

```terminal:コマンドプロンプト
 - league/flysystem[1.1.0, ..., 1.x-dev] require ext-fileinfo * -> it is missing from your system. Install or enable PHP's fileinfo extension.
```
fileinfoがねーよ的なことが書いてあったので、原因解明のためこのエラー文をコピーしGoogle先生の所へGO！
あんまり日本語記載サイトがなかったので渋々海外のサイトを除くとどうやら使っているphp/php.iniのコメントアウトを外せば動くと書いてあったので早速Vscodeでphp.iniファイルを開き、fineinfoを探す旅へ、まあ検索機能を使うのでもの数秒だが、、

```php:php.ini
;extension=fileinfo
```
ありました!!このカンマを外します。

```php:php.ini
extension=fileinfo
```
bookupのプロジェクトフォルダが中途半端にできてしまっているので

```terminal:コマンドプロンプト
rmdir bookup
```
を実行しゴミを削除したら再度createprojectしてみます。

```terminal:コマンドプロンプト
composer create-project laravel/laravel bookup
```

実行すると、、

```terminal:コマンドプロンプト
Creating a "laravel/laravel" project at "./bookup"
Installing laravel/laravel (v8.4.4)
  - Installing laravel/laravel (v8.4.4): Extracting archive
Created project in C:\phpstudy\bookup
> @php -r "file_exists('.env') || copy('.env.example', '.env');"
Loading composer repositories with package information
Updating dependencies
Lock file operations: 104 installs, 0 updates, 0 removals
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Writing lock file
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Package operations: 104 installs, 0 updates, 0 removals
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  - Installing symfony/http-foundation (v5.2.0): Extracting archive
  - Installing symfony/http-client-contracts (v2.3.1): Extracting archive
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  - Installing symfony/polyfill-iconv (v1.20.0): Extracting archive
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82 package suggestions were added by new dependencies, use `composer suggest` to see details.
Generating optimized autoload files
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover --ansi
Discovered Package: facade/ignition
Discovered Package: fideloper/proxy
Discovered Package: fruitcake/laravel-cors
Discovered Package: laravel/tinker
Discovered Package: nesbot/carbon
Discovered Package: nunomaduro/collision
Package manifest generated successfully.
72 packages you are using are looking for funding.
Use the `composer fund` command to find out more!
> @php artisan key:generate --ansi
Application key set successfully.

C:\phpstudy>
```
時間はかかりましたが、うまくいったぽい、、