Symfony2 stop Composer installing parameters.yml.dist into parameters.yml

Remove this line twice from your composer.json:

"Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",

This is done by the IncenteevParameterHandler library, which contains a script that does this. By removing the script from the config, it will never be called.

If you remove that line for ever, you can also remove these lines (as the library isn't really needed anymore):

"incenteev/composer-parameter-handler": "~2.0",..."incenteev-parameters": {    "file": "app/config/parameters.yml"},

First solution : add "keep-outdated": true in the 'extra' section of your composer.json.

[...]"extra": {    "symfony-app-dir": "app",    "symfony-web-dir": "web",    "incenteev-parameters": {        "file": "app/config/parameters.yml",        "keep-outdated": true  <------------ ADDED LINE ------------    },    "branch-alias": {        "dev-master": "2.3-dev"    },    "symfony-assets-install": "symlink"}[...]

incenteev will not remove parameters any more.

Second solution : modify the app/config/parameter.yml.dist file.For me it was to add Sqlite parameters 'path' and 'memory' and avoid to see them deleted each time I do a composer update.

# app/config/parameter.yml.distparameters:    database_driver:   pdo_sqlite    database_host:     ~    database_port:     ~    database_name:     ~    database_user:     ~    database_password: ~    database_path:     ~ <------------ ADDED LINE ------------    database_memory:   ~ <------------ ADDED LINE ------------[...]

I don't know which solution is the best but both works.

leaving empty this array of parameters:

"incenteev-parameters": {    "file": "app/config/parameters.yml"},

in the extra section of your composer.json file should work.

"incenteev-parameters": {},