Steps to create locally in DDEV:
mkdir testd9
cd testd9
ddev config
# defaults to: testd9, current folder, PHP
ddev composer create drupal/recommended-project:9.5.1 --no-install
nano composer.json
# change composer/installers to 1.5
# temporarily remove drupal/core-composer-scaffold to 8.6.15
# temporarily remove drupal/core-project-message to 8.6.15
# change drupal/core-recommended to 8.6.15
# save
nano .ddev/config.yaml
# change php_version to 7.4
# change composer_version to 1
# save
rm composer.lock
ddev restart
ddev composer install
ddev config
# defaults to testd9, web, drupal8
# load database
# load files folder
# test install
# upgrade to different drupal version.
# composer/installers will need to be upgraded occaisionally.
# at 8.8 it will require the drupal-core-composer-scaffold Keep in sync with drupal/core-recommended
# drupal/core-project-message is not needed.
resulting composer.json:
{
"name": "drupal/recommended-project",
"description": "Project template for Drupal 9 projects with a relocated document root",
"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"
}
],
"require": {
"composer/installers": "1.5",
"drupal/core-recommended": "8.6.15"
},
"conflict": {
"drupal/drupal": "*"
},
"minimum-stability": "stable",
"prefer-stable": true,
"config": {
"allow-plugins": {
"composer/installers": true,
"drupal/core-composer-scaffold": true,
"drupal/core-project-message": true,
"dealerdirect/phpcodesniffer-composer-installer": true
},
"sort-packages": true
},
"extra": {
"drupal-scaffold": {
"locations": {
"web-root": "web/"
}
},
"installer-paths": {
"web/core": [
"type:drupal-core"
],
"web/libraries/{$name}": [
"type:drupal-library"
],
"web/modules/contrib/{$name}": [
"type:drupal-module"
],
"web/profiles/contrib/{$name}": [
"type:drupal-profile"
],
"web/themes/contrib/{$name}": [
"type:drupal-theme"
],
"drush/Commands/contrib/{$name}": [
"type:drupal-drush"
],
"web/modules/custom/{$name}": [
"type:drupal-custom-module"
],
"web/profiles/custom/{$name}": [
"type:drupal-custom-profile"
],
"web/themes/custom/{$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/recommended-project template! </>",
"<bg=blue;fg=white> </>",
"",
"<bg=yellow;fg=black>Next steps</>:",
" * Install the site: https://www.drupal.org/docs/installing-drupal",
" * 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"
]
}
}
}