Stuart Herbert has a new post to his blog today that shares some helpful hints about dependency quirks that can come with using PEAR packages and the PEAR installer.

To save myself a bit of effort, I thought it would make sense to make my API client reuse PEAR's existing HTTP_Request2 component. No sense in re-inventing the wheel, I thought. But that's where my troubles began. [...] There are a few quirks in the way that the PEAR installer handles version numbers, and you need to know how to deal with them if you're going to re-use PEAR project components in your own apps.

He shows how a dependency can be set up for the HTTP_Request2 package as a part of the update to his project. He talks about changes to the project's package.xml file and the trick with version numbering to get the latest. In this case, the latest is a non-stable alpha/beta component and the package.xml file needs some special handling to cooperate there (version, stability, release, api and min/max).