Andreas Fuchs' Journal

I hack on things for people.

Some Details About CLAPPA

First of all, thanks to all who congratulated me on this, and to Nicolas for starting it all.

CLAPPA is the project I submitted for funding to the Google Summer of Code, which is now being funded by clozure. The main idea behind the project is to have a package repository for asdf-install that presents information more nicely than does cliki. When I talked about doing something like this project on #lisp, Nicolas Lamirault spoke up and told me he had something that was part of the way there already – CLAPPA.

The goals of this project include checking for common maintainer errors when uploading a released package, and having a bit more machine/human-processable metadata available. This metadata will include dependencies between packages (already done in the original CLAPPA, but loads arbitrary code), versions with release dates (already done, just need all of the packages on, and possible naming conflicts (think of the CFFI-UFFI-COMPAT system in CFFI). Some other sweet features will include an atom (or rss) feed for new releases, and for new releases that are dependencies of a given package, to help maintainers keep track of which updates may have broken their packages.

To draw the outline of this project a bit more clearly, here’s what this project is not about:

  • Dubious security features. This is not intended to be a repository of guaranteed-safe code. (Who’d guarantee we’re honest?) CLAPPA is going to protect itself against malicious code, but its users must take care to protect themselves.
  • Configuration management in the style of cl-librarian. This might be done in the future, but for now the focus is on getting a useful package repository going.
  • Versioned dependencies in ASDF or getting packages from DARCS. This is another interesting addition for the future. Again, the focus is on an asdf-install compatible package repository, for now.

I’ve set up a wiki to track development progress at (need to be logged in to edit), and you can read the original google project submission at this lisppaste.