1.6.0

New features

• --fail-fast cancels all pending builds as soon as one fails. Useful when a shared dependency breaks and the remaining builds would just waste time. (#343)
• --store builds against a remote Nix store (e.g. ssh-ng://builder) while evaluating locally, without copying outputs back. Implies --no-link; mutually exclusive with --remote and the upload flags. Based on work by @lovesegfault. (#346)
• --stream-json-lines streams build results as JSON Lines to stdout while builds run, similar to nix-eval-jobs. To keep stdout parseable, all logs and subprocess output now go to stderr. Contributed by @sysedwinistrator. (#353)

Failure diagnostics

• JUnit reports now include the full build log (ANSI escapes stripped) instead of only a short error string. (#344)
• With --no-nom, nix build now runs with -L so build logs are no longer discarded; previously failures only showed "build exited with 1". (#347)
• The list of failed attributes at the end of a run is no longer truncated. Fixed by @Enzime. (#340)

Bug fixes

• --retries now re-runs failed builds as documented. (#355)
• Progress reporting covers upload/download/eval queues, not just builds. (#355)

Internal

• Split the monolithic __init__.py into smaller modules; various deduplications and cleanups. (#354, #355, #356)
• Version is read from pyproject.toml instead of being duplicated. (#349)
• CI: nix-installer-action with cache, tests on arm64 Linux runners, flake checks for build closures and inputs. (#351, #357)

New Contributors

• @Enzime made their first contribution in #340
• @sysedwinistrator made their first contribution in #353

Full Changelog: 1.5.0...1.6.0