nix-derivation 0.6.1

Highlights:

• Added NixHasher for reusable incremental BLAKE3, MD5, SHA-1, SHA-256, and SHA-512 content hashing.
• Added hash_bytes for convenient one-shot hashing with the same algorithms.
• Digest lengths remain enforced by Rust types and integrate with the crate’s existing Nix hash APIs.

nix-derivation 0.6.0

Highlights:

• Added parsing and serialization for Nix derivation JSON format version 4, including every output form, recursive dynamic inputs, structured attributes, and custom logical stores.
• Matched Nix version negotiation and strict SRI handling for fixed-output hashes.
• Added BLAKE3 hash, content-address, and store-path support.
• Added frozen Nix 2.34.8 fixtures, malformed-input coverage, and live round-trip checks through nix derivation show/add.

nix-derivation 0.5.0

Highlights:

• Added generic SingleDerivedPath and DerivedPath models with typed, store-aware parsing and rendering, dynamic-output chains, legacy separator support, transport strings, and Nix-compatible JSON.
• Added DrvOutput identities with basename and store-aware absolute parsing/rendering plus JSON output.

nix-derivation 0.4.0

Highlights:

• Added typed Nix 2.35 downstream dynamic-output placeholders.
• Added semantic queries for dynamic derivations, required system features, and exportReferencesGraph.
• Added typed dynamic-input resolution across builders, arguments, environment keys and values, and structured attributes.

nix-derivation 0.3.0

Added

• Add StoreDir and store-aware parsing, rendering, path-construction, builder,
  and validated-derivation APIs for non-default logical store directories such
  as Guix's /gnu/store.
• Add an opt-in Antithesis workload that exercises parsing, serialization,
  validation, structured attributes, and store-path round trips with mutated
  and arbitrary inputs.
• Add Guix fixtures and parity tests covering alternate-store derivation paths,
  outputs, inputs, structured attributes, placeholders, and ATerm escaping.

Changed

• Carry the configured store directory through derivation serialization,
  hashing, output calculation, and structured-attribute generation while
  preserving the existing /nix/store APIs as default-store wrappers.

nix-derivation 0.2.0

Breaking changes

• Replace hash_derivation_modulo and try_hash_derivation_modulo with
  type-directed input-identity and output-path hashing APIs. The new
  DerivationModuloHash, InputDerivationHash, and OutputPathHash types make
  fixed-output and deferred hashes explicit and align the behavior with Nix's
  intermediate-derivation model.
• Rename HashDerivationError to InputResolutionError and allow input hash
  resolvers to return typed InputDerivationHash values. Raw [u8; 32] values
  remain accepted as regular input-addressed hashes.
• Strengthen hash and content-address APIs with public HashAlgorithm and
  ContentAddressMethod types. This renames NixHash::from_algo_and_digest to
  from_algorithm_and_digest and NixHash::algo to algorithm, and changes
  the corresponding CAHash constructors and accessors to use typed values.
• Change store-path constructors to accept validated StorePath references
  instead of path strings, and make build_output_path accept a
  DerivationModuloHash.
• Mark public error enums as non-exhaustive and update hash and store-path error
  variants to carry the new typed values.

Added

• Add DerivationBuilder::input_addressed_output and read-only accessors for
  every accumulated builder field.
• Add parsing and display implementations for hash algorithms, content-address
  methods, Nix hashes, and content addresses.
• Add differential tests for derivation-modulo hashing and Nix 2.34 parity,
  including fixed-output, content-addressed, and dynamic derivations.

Changed

• Match Nix's derivation-modulo hashing semantics for fixed-output identities,
  output-name merging, and unresolved dynamic or content-addressed inputs.
• Validate structured attributes without eagerly materializing their JSON value
  tree, cache the sorted representation on first use, and generate structured
  attribute files without cloning the full object.
• Reduce allocations and copies in ATerm serialization, structured-attribute
  output substitution, and Nix base32 encoding.
• Expand API documentation and update benchmark methodology and results.