# Release 0.14 (2010-02-04)

This release has the following improvements:

- The garbage collector now starts deleting garbage much faster than before. It no longer determines liveness of all paths in the store, but does so on demand.

- Added a new operation, `nix-store --query --roots`, that shows the garbage collector roots that directly or indirectly point to the given store paths.

- Removed support for converting Berkeley DB-based Nix databases to the new schema.

- Removed the `--use-atime` and `--max-atime` garbage collector options. They were not very useful in practice.

- On Windows, Nix now requires Cygwin 1.7.x.

- A few bug fixes.