## [Unreleased]
+### Changed
+- Use nix from nixpkgs rather than from PATH. This is needed when the nix in
+PATH is nixUnstable-3.0pre20201020_e0ca98c or later because nix commit
+787469c7b66aec12ab6847e7db2cdc8aef5c325e removed <nix/unpack-channel.nix>.
## [3.0.3] - 2021-05-20