add composer support

[DJPaul]

I'd like to add Composer support to BuddyPress.

This would involve adding a JSON file into the root of /src/ (thus it would end up in a regular release, not just the dev SVN); it would contain pretty similar to info that our NPM package.json already has. Here's an example: ​https://github.com/markjaquith/WP-TLC-Transients/blob/master/composer.json

​#WP23912 is a discussion about Composer support in WordPress core; the issues covered in that topic don't affect us, but that ticket's description is helpful to read.

If we did this, once we have a release (because we want to use Composer with release versions), we can tell ​https://packagist.org/ about our new Composer support, which would allow someone to install BuddyPress by integrating with their own project/own site's composer.json (specifying BP as a package requirement). The easiest way to demo this is to install Composer and run a command like "composer require hyyan/logo-controller".

[boonebgorges]

+1. This will be cool.

[DJPaul]

Attached proposed composer.json file patch for review.

[TJNowell]

I would place the name type and license attributes closer to the top of the file, I'd also depend on ~1.0 rather than a specific version of the composer installer package.

Other than that it looks good

[Rarst]

What Tom said. While it's not technically meaningful I tend to put properties (loosely) in a same order as documentation (see ​https://getcomposer.org/doc/04-schema.md ), just makes it familiar for humans to skim through.

[DJPaul]

Thanks for taking a look!

[djpaul]

In 9088:

Add support for Composer.

Fixes #5928

[Rarst]

Don't forget to register on ​https://packagist.org/ for easy usage of the package. I would also add "wordpress" to keywords, makes sense in that context.

Composer all the things! :)

[DJPaul]

Yes, thanks. We will do that once the next version (2.2) is released, approx. mid January 2015. I want Packagist to be configured from ​http://plugins.svn.wordpress.org/buddypress/, not ​http://buddypress.svn.wordpress.org/ -- the latter is our development SVN and has some folder path differences, etc. :)

[Rarst]

Yeah, don't mind me, just checklist running in my brain. composer.json fixed — check, remind to get it on packagist — check... :)

Yeah, I was just discussing that nested src won't work for it.