Could not find package drush/drush - composer-php

Question

I'm facing a problem while I'm running this commmand composer require drush/drush but it didn't work for me and I got this error message:
[InvalidArgumentException] Could not find package drush/drush. It
was however found via repository search, which indicates a consistency
issue with the repository.
I'm using Drupal 8.9.18, Drush version : 10.6.1 and my PHP version is: php7.1.33
my composer.json file :
{
"name": "drupal/legacy-project",
"description": "Project template for Drupal 8 projects with composer following drupal/drupal layout",
"type": "project",
"license": "GPL-2.0-or-later",
"homepage": "https://www.drupal.org/project/drupal",
"support": {
"docs": "https://www.drupal.org/docs/user_guide/en/index.html",
"chat": "https://www.drupal.org/node/314178"
},
"repositories": {
"drupal": {
"type": "composer",
"url": "https://packages.drupal.org/8"
},
"0": {
"type": "composer",
"url": "https://packages.drupal.org/8"
},
"gigyadrupal": {
"type": "git",
"url": "https://github.com/gigya/drupal8.git"
}
},
"require": {
"composer/installers": "^1.2",
"drupal/core-composer-scaffold": "^8.8",
"drupal/core-project-message": "^8.8",
"drupal/core-recommended": "^8.8",
"drupal/core-vendor-hardening": "^8.8",
"drupal/gigya": "^1.7"
},
"conflict": {
"drupal/drupal": "*"
},
"minimum-stability": "dev",
"prefer-stable": true,
"config": {
"sort-packages": true
},
"extra": {
"drupal-scaffold": {
"locations": {
"web-root": "./"
}
},
"installer-paths": {
"core": [
"type:drupal-core"
],
"libraries/{$name}": [
"type:drupal-library"
],
"modules/contrib/{$name}": [
"type:drupal-module"
],
"profiles/contrib/{$name}": [
"type:drupal-profile"
],
"themes/contrib/{$name}": [
"type:drupal-theme"
],
"drush/Commands/contrib/{$name}": [
"type:drupal-drush"
],
"modules/custom/{$name}": [
"type:drupal-custom-module"
],
"themes/custom/{$name}": [
"type:drupal-custom-theme"
]
},
"drupal-core-project-message": {
"include-keys": [
"homepage",
"support"
],
"post-create-project-cmd-message": [
"<bg=blue;fg=white> </>",
"<bg=blue;fg=white> Congratulations, you’ve installed the Drupal codebase </>",
"<bg=blue;fg=white> from the drupal/legacy-project template! </>",
"<bg=blue;fg=white> </>",
"",
"<bg=yellow;fg=black>Next steps</>:",
" * Install the site: https://www.drupal.org/docs/8/install",
" * Read the user guide: https://www.drupal.org/docs/user_guide/en/index.html",
" * Get support: https://www.drupal.org/support",
" * Get involved with the Drupal community:",
" https://www.drupal.org/getting-involved",
" * Remove the plugin that prints this message:",
" composer remove drupal/core-project-message"
]
}
}
}

Answer 1

You need to have an installable set of packages. drupal/gigya doesn't really exist (anymore). You also should not be using the drupal/legacy-project at all.
This is the best I came up with, although that's maybe not giving you the version of Gigya you want. Not sure, try it out. Check the updated respositories section and the updated "gigya/gigya-drupal": "*" package name which will always get you the latest master from GitHub.
{
"name": "drupal/legacy-project",
"description": "Project template for Drupal 8 projects with composer following drupal/drupal layout",
"type": "project",
"license": "GPL-2.0-or-later",
"homepage": "https://www.drupal.org/project/drupal",
"support": {
"docs": "https://www.drupal.org/docs/user_guide/en/index.html",
"chat": "https://www.drupal.org/node/314178"
},
"repositories": [
{
"type": "composer",
"url": "https://packages.drupal.org/8"
},
{
"type": "vcs",
"url": "https://github.com/gigya/drupal8"
}
],
"require": {
"composer/installers": "^1.2",
"drupal/core-composer-scaffold": "^8.8",
"drupal/core-project-message": "^8.8",
"drupal/core-recommended": "^8.8",
"drupal/core-vendor-hardening": "^8.8",
"gigya/gigya-drupal": "*"
},
"conflict": {
"drupal/drupal": "*"
},
"minimum-stability": "dev",
"prefer-stable": true,
"config": {
"sort-packages": true
},
"extra": {
"drupal-scaffold": {
"locations": {
"web-root": "./"
}
},
"installer-paths": {
"core": [
"type:drupal-core"
],
"libraries/{$name}": [
"type:drupal-library"
],
"modules/contrib/{$name}": [
"type:drupal-module"
],
"profiles/contrib/{$name}": [
"type:drupal-profile"
],
"themes/contrib/{$name}": [
"type:drupal-theme"
],
"drush/Commands/contrib/{$name}": [
"type:drupal-drush"
],
"modules/custom/{$name}": [
"type:drupal-custom-module"
],
"themes/custom/{$name}": [
"type:drupal-custom-theme"
]
},
"drupal-core-project-message": {
"include-keys": [
"homepage",
"support"
],
"post-create-project-cmd-message": [
"<bg=blue;fg=white> </>",
"<bg=blue;fg=white> Congratulations, you’ve installed the Drupal codebase </>",
"<bg=blue;fg=white> from the drupal/legacy-project template! </>",
"<bg=blue;fg=white> </>",
"",
"<bg=yellow;fg=black>Next steps</>:",
" * Install the site: https://www.drupal.org/docs/8/install",
" * Read the user guide: https://www.drupal.org/docs/user_guide/en/index.html",
" * Get support: https://www.drupal.org/support",
" * Get involved with the Drupal community:",
" https://www.drupal.org/getting-involved",
" * Remove the plugin that prints this message:",
" composer remove drupal/core-project-message"
]
}
}
}