This is primarily a bug fix release. It also reduces memory consumption in certain situations. In addition, it has the following new features: New builtin functions: builtins.bitAnd, builtins.bitOr, builtins.bitXor, builtins.fromTOML, builtins.concatMap, builtins.mapAttrs. The S3 binary cache store now supports uploading NARs larger than 5 GiB. The S3 binary cache store now supports uploading to S3-compatible services with the endpoint option. The flag --fallback is no longer required to recover from disappeared NARs in binary caches. nix-daemon now respects --store, so it can be run as a non-root user. This release has contributions from TODO.