Composer: When running composer update --prefer-source on a pre-existing vendor folder, it doesn't prefer source

[joshuataylor]

When running composer update --prefer-source on a pre-existing vendor folder, it doesn't prefer source, instead it downloads dists.

[Seldaek]

Yes packages already installed as dist will remain so, if you want to force a package to be installed as source you should rm -rf vendor/foo/bar and then run composer install or update with --prefer-source and that one will get installed from source.

[RdeWilde]

@Seldaek Is it possible to default --prefer-source when composer runs in 'dev' mode? Or maybe default it for the 'require-dev' section with the possibility to override packages from the 'require' to force sources?

[Seldaek]

@RdeWilde run composer config -g preferred-install source and all your packages will be installed from source on that machine from now on.