Changes between Nix and Determinate Nix

This section lists the differences between upstream Nix 2.28 and Determinate Nix 3.5.1.

In Determinate Nix, flakes are stable. You no longer need to enable the flakes experimental feature.
In Determinate Nix, the new Nix CLI (i.e. the nix command) is stable. You no longer need to enable the nix-command experimental feature.
Determinate Nix has a setting json-log-path to send a copy of all Nix log messages (in JSON format) to a file or Unix domain socket.
Determinate Nix has made nix profile install an alias to nix profile add, a more symmetrical antonym of nix profile remove.
nix-channel and channel: url syntax (like channel:nixos-24.11) is deprecated, see: https://github.com/DeterminateSystems/nix-src/issues/34
Using indirect flake references and implicit inputs is deprecated, see: https://github.com/DeterminateSystems/nix-src/issues/37
Warnings around "dirty trees" are updated to reduce "dirty" jargon, and now refers to "uncommitted changes".

Only run the test step after build completes by @grahamc in DeterminateSystems/nix-src#51
Remove flake-compat input by @lucperkins in DeterminateSystems/nix-src#52
Deprecate upgrade-nix command by @gustavderdrache in DeterminateSystems/nix-src#55
Update flake.lock in light of recent change by @lucperkins in DeterminateSystems/nix-src#54
Lazy trees v2 by @edolstra in DeterminateSystems/nix-src#27
Improve lazy trees backward compatibility by @edolstra in DeterminateSystems/nix-src#56
Canonicalize flake input URLs before checking flake.lock file staleness, for dealing with dir in URL-style flakerefs by @edolstra in DeterminateSystems/nix-src#57
Improve build failure error messages by @edolstra in DeterminateSystems/nix-src#58
Release v3.5.0 by @github-actions in DeterminateSystems/nix-src#59
@gustavderdrache made their first contribution in DeterminateSystems/nix-src#55
Dispatch release notes with a gh token by @grahamc in DeterminateSystems/nix-src#61