Nix 0.14 Release Notes

doc/manual/source/release-notes/rl-0.14.md

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# 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.

Chunks

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Title: Nix 0.14 Release Notes

Summary

Release 0.14 of Nix introduces several improvements, most notably a faster garbage collector that determines liveness on demand. It also adds a new `nix-store --query --roots` operation to identify garbage collector roots. Support for converting Berkeley DB-based Nix databases and the `--use-atime` / `--max-atime` garbage collector options have been removed. Additionally, Windows users now require Cygwin 1.7.x, and a few bugs have been fixed.