composer require laravel/ui v1.2.0 した話

Laravel 6.x で単純に composer require laravel/ui をしたら、version 不一致でエラーになった

vagrant@homestead:~/blog$ composer require laravel/ui
    1/6:        http://repo.packagist.org/p/provider-latest$4e40f62438a8386f393a55af8887692d5b46835ccd076ccee51c80a3f5804bd5.json
    2/6:        http://repo.packagist.org/p/provider-2019-10$1392371d2dc28fac5a51f88342ec87290cc14e9b4659354d375d602faf66af93.json
    3/6:        http://repo.packagist.org/p/provider-2020-01$b106ca86c0235672576d42b6f9c771869d63d261161a4f2ee400680dea15c0bf.json
    4/6:        http://repo.packagist.org/p/provider-2020-04$ce6dea79e7bff7e5d9cb045e87456e38eb9b5a1feb731041b0a57f16676b0958.json
    5/6:        http://repo.packagist.org/p/provider-2019$5c7699cf23064ea6072f5b187cddceeb03150d3ef8fdcbfd4460a586f83008aa.json
    6/6:        http://repo.packagist.org/p/provider-2018$5ef620e0bec726b336e7aa6b40354f3a5310d8135efb4c415bb6d3e9ef1531c7.json
    Finished: success: 6, skipped: 0, failure: 0, total: 6
Using version ^2.0 for laravel/ui
./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 v6.18.19
    - Conclusion: don't install laravel/framework v6.18.19
    - laravel/ui 2.x-dev requires illuminate/support ^7.0 -> satisfiable by laravel/framework[7.x-dev], illuminate/support[7.x-dev, v7.0.0, v7.0.1, v7.0.2, v7.0.3, v7.0.4, v7.0.5, v7.0.6, v7.0.7, v7.0.8, v7.1.0, v7.1.1, v7.1.2, v7.1.3, v7.10.0, v7.10.1, v7.10.2, v7.10.3, v7.11.0, v7.12.0, v7.13.0, v7.14.0, v7.14.1, v7.15.0, v7.2.0, v7.2.1, v7.2.2, v7.3.0, v7.4.0, v7.5.0, v7.5.1, v7.5.2, v7.6.0, v7.6.1, v7.6.2, v7.7.0, v7.7.1, v7.8.0, v7.8.1, v7.9.0, v7.9.1, v7.9.2].
    - laravel/ui v2.0.0 requires illuminate/support ^7.0 -> satisfiable by laravel/framework[7.x-dev], illuminate/support[7.x-dev, v7.0.0, v7.0.1, v7.0.2, v7.0.3, v7.0.4, v7.0.5, v7.0.6, v7.0.7, v7.0.8, v7.1.0, v7.1.1, v7.1.2, v7.1.3, v7.10.0, v7.10.1, v7.10.2, v7.10.3, v7.11.0, v7.12.0, v7.13.0, v7.14.0, v7.14.1, v7.15.0, v7.2.0, v7.2.1, v7.2.2, v7.3.0, v7.4.0, v7.5.0, v7.5.1, v7.5.2, v7.6.0, v7.6.1, v7.6.2, v7.7.0, v7.7.1, v7.8.0, v7.8.1, v7.9.0, v7.9.1, v7.9.2].
    - laravel/ui v2.0.1 requires illuminate/support ^7.0 -> satisfiable by laravel/framework[7.x-dev], illuminate/support[7.x-dev, v7.0.0, v7.0.1, v7.0.2, v7.0.3, v7.0.4, v7.0.5, v7.0.6, v7.0.7, v7.0.8, v7.1.0, v7.1.1, v7.1.2, v7.1.3, v7.10.0, v7.10.1, v7.10.2, v7.10.3, v7.11.0, v7.12.0, v7.13.0, v7.14.0, v7.14.1, v7.15.0, v7.2.0, v7.2.1, v7.2.2, v7.3.0, v7.4.0, v7.5.0, v7.5.1, v7.5.2, v7.6.0, v7.6.1, v7.6.2, v7.7.0, v7.7.1, v7.8.0, v7.8.1, v7.9.0, v7.9.1, v7.9.2].
    - laravel/ui v2.0.2 requires illuminate/support ^7.0 -> satisfiable by laravel/framework[7.x-dev], illuminate/support[7.x-dev, v7.0.0, v7.0.1, v7.0.2, v7.0.3, v7.0.4, v7.0.5, v7.0.6, v7.0.7, v7.0.8, v7.1.0, v7.1.1, v7.1.2, v7.1.3, v7.10.0, v7.10.1, v7.10.2, v7.10.3, v7.11.0, v7.12.0, v7.13.0, v7.14.0, v7.14.1, v7.15.0, v7.2.0, v7.2.1, v7.2.2, v7.3.0, v7.4.0, v7.5.0, v7.5.1, v7.5.2, v7.6.0, v7.6.1, v7.6.2, v7.7.0, v7.7.1, v7.8.0, v7.8.1, v7.9.0, v7.9.1, v7.9.2].
    - laravel/ui v2.0.3 requires illuminate/support ^7.0 -> satisfiable by laravel/framework[7.x-dev], illuminate/support[7.x-dev, v7.0.0, v7.0.1, v7.0.2, v7.0.3, v7.0.4, v7.0.5, v7.0.6, v7.0.7, v7.0.8, v7.1.0, v7.1.1, v7.1.2, v7.1.3, v7.10.0, v7.10.1, v7.10.2, v7.10.3, v7.11.0, v7.12.0, v7.13.0, v7.14.0, v7.14.1, v7.15.0, v7.2.0, v7.2.1, v7.2.2, v7.3.0, v7.4.0, v7.5.0, v7.5.1, v7.5.2, v7.6.0, v7.6.1, v7.6.2, v7.7.0, v7.7.1, v7.8.0, v7.8.1, v7.9.0, v7.9.1, v7.9.2].
    - Can only install one of: laravel/framework[7.x-dev, v6.18.19].
    - don't install illuminate/support 7.x-dev|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.0.0|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.0.1|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.0.2|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.0.3|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.0.4|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.0.5|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.0.6|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.0.7|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.0.8|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.1.0|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.1.1|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.1.2|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.1.3|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.10.0|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.10.1|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.10.2|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.10.3|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.11.0|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.12.0|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.13.0|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.14.0|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.14.1|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.15.0|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.2.0|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.2.1|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.2.2|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.3.0|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.4.0|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.5.0|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.5.1|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.5.2|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.6.0|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.6.1|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.6.2|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.7.0|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.7.1|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.8.0|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.8.1|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.9.0|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.9.1|don't install laravel/framework v6.18.19
    - don't install illuminate/support v7.9.2|don't install laravel/framework v6.18.19
    - Installation request for laravel/framework (locked at v6.18.19, required as ^6.2) -> satisfiable by laravel/framework[v6.18.19].
    - Installation request for laravel/ui ^2.0 -> satisfiable by laravel/ui[2.x-dev, v2.0.0, v2.0.1, v2.0.2, v2.0.3].


Installation failed, reverting ./composer.json to its original content.
vagrant@homestead:~/blog$ composer search laravel/ui
laravel/ui Laravel UI utilities and presets.

なので require できそうな version を調べた

vagrant@homestead:~/blog$ composer show laravel/ui --available
name     : laravel/ui
descrip. : Laravel UI utilities and presets.
keywords : ui, laravel
versions : dev-master, 3.x-dev, 2.x-dev, v2.0.3, v2.0.2, v2.0.1, v2.0.0, 1.x-dev, v1.2.0, v1.1.2, v1.1.1, v1.1.0, v1.0.1, v1.0.0
type     : library
license  : MIT License (MIT) (OSI approved) https://spdx.org/licenses/MIT.html#licenseText
homepage :
source   : [git] https://github.com/laravel/ui.git 715d0ab13fecd8adabb02679468d9f2707a3184c
dist     : [zip] https://api.github.com/repos/laravel/ui/zipball/715d0ab13fecd8adabb02679468d9f2707a3184c 715d0ab13fecd8adabb02679468d9f2707a3184c
names    : laravel/ui

autoload
psr-4
Laravel\Ui\ => src/
Illuminate\Foundation\Auth\ => auth-backend/

requires
illuminate/console ^7.0
illuminate/filesystem ^7.0
illuminate/support ^7.0
php ^7.2.5

requires (dev)
mockery/mockery ^1.0
phpunit/phpunit ^8.0
vagrant@homestead:~/blog$

v1.2.0 はうまく行きそうだったので、試して、うまく行った

vagrant@homestead:~/blog$ composer require laravel/ui v1.2.0
    1/3:        http://repo.packagist.org/p/provider-latest$19637ab3de7b44d3318f47f090feced8f34aee07254ffcc47c28b50e2c306e42.json
    2/3:        http://repo.packagist.org/p/provider-2020-01$ea886de2815676318b9509795ac914fc4e75de7df72d28889a736951912bc022.json
    3/3:        http://repo.packagist.org/p/provider-2020-04$8d08da08ef1f6fd330f3b8a7df79c427c650362565872de04905c6ccac749be9.json
    Finished: success: 3, skipped: 0, failure: 0, total: 3
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
    1/1:        https://codeload.github.com/laravel/ui/legacy.zip/bb64fca681566ca94457d490a00f899516e75664
    Finished: success: 1, skipped: 0, failure: 0, total: 1
Package operations: 1 install, 0 updates, 0 removals
  - Installing laravel/ui (v1.2.0): Loading from cache
Package jakub-onderka/php-console-color is abandoned, you should avoid using it. Use php-parallel-lint/php-console-color instead.
Package jakub-onderka/php-console-highlighter is abandoned, you should avoid using it. Use php-parallel-lint/php-console-highlighter instead.
Writing lock file
Generating optimized autoload files
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover --ansi
Discovered Package: facade/ignition
Discovered Package: fideloper/proxy
Discovered Package: laravel/tinker
Discovered Package: laravel/ui
Discovered Package: nesbot/carbon
Discovered Package: nunomaduro/collision
Package manifest generated successfully.
34 packages you are using are looking for funding.
Use the `composer fund` command to find out more!
vagrant@homestead:~/blog$