Hide installed packages from suggestions when package is not found

[xy2z]

This solves #8280

[Seldaek]

This is a good improvement for the require command, but for the init command itself, and the use case described in #8280 I don't think this will work as the first package added won't be in the installed repo yet, the names are merely collected in $requires - so I think maybe you should also filter the $matches here

composer/src/Composer/Command/InitCommand.php

Line 441 in a8abdd9

$matches = $this->findPackages($package);

and make sure those already in $requires get filtered out before the array of matches is used further.

I believe this would fix it but you have to try and check, I'm not sure.

[xy2z]

I'll look into it 👍

[xy2z]

@Seldaek This should be fixed now

[Seldaek]

Thanks, simplified the code a little so it only loops once instead of on every package search (see 669033f), but otherwise patch was pretty good