-`services.rippleDataApi` has been removed, as `ripple-data-api` was broken and had not been updated since 2022.
- The [`no-broken-symlinks` hook](#no-broken-symlinks.sh) was added to catch builds containing dangling or reflexive symlinks, as these are indicative of problems with packaging.
The hook can be disabled by providing `dontCheckForBrokenSymlinks = true;` as an argument to `mkDerivation`.
For more information, [check the docs](#no-broken-symlinks.sh) or [see this PR](https://github.com/NixOS/nixpkgs/pull/370750).
- The `nixLog*` family of functions made available through the standard environment have been rewritten to prefix messages with both the debug level and the function name of the caller.
The `nixLog` function, which logs unconditionally, was also re-introduced and modified to prefix messages with the function name of the caller.
For more information, [see this PR](https://github.com/NixOS/nixpkgs/pull/370742).
- The `rustPlatform.fetchCargoTarball` function is deprecated, because it relied on `cargo vendor` not changing its output format to keep fixed-output derivation hashes the same, which is a Nix invariant, and Cargo 1.84.0 changed `cargo vendor`'s output format.
It should generally be replaced with `rustPlatform.fetchCargoVendor`, but `rustPlatform.importCargoLock` may also be appropriate in some circumstances.
`rustPlatform.buildRustPackage` users must set `useFetchCargoVendor` to `true` and regenerate the `cargoHash`.
