Nix Release 0.14 (2010-02-04) - Improvements and Changes

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

974ff42d5469e7ce9fe0aeaa0ebfa29d6f2307f989faa36900000003000002c1

# 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

b509c114 (1st chunk of `doc/manual/source/release-notes/rl-0.14.md`)

Title: Nix Release 0.14 (2010-02-04) - Improvements and Changes

Summary

Release 0.14 of Nix includes improvements to the garbage collector, making it faster by using on-demand liveness detection. It introduces a new `nix-store --query --roots` operation to show garbage collector roots. Support for converting Berkeley DB-based Nix databases and the `--use-atime` and `--max-atime` garbage collector options have been removed. On Windows, Nix now requires Cygwin 1.7.x. The release also includes several bug fixes.