v0.8.0a1

[0.8.0a1] - 2026-09-13

First release since 0.7.9. This is a breaking release: it changes the default
Brick version and the default SHACL engine, and removes the Allegrograph
reasoner along with several pieces of long-broken surface area.

(0.7.10a1 was published from an intermediate state and is superseded by this
release.)

Removed

• The Allegrograph OWL-RL backend, along with the [allegro] extra and the
  docker dependency. It ran agtool materialize inside a
  franzinc/agraph:v7.1.0 container to provide a third implementation of a
  profile the two in-process reasoners already cover.
  expand("owlrl", backend="allegrograph") now raises ValueError.
• brickschema.topquadrant_shacl and the bundled TopQuadrant CLI (49 MB of
  Java, including two 9 MB fat jars). Nothing imported the module;
  brick-tq-shacl ships its own copy of the engine. The wheel drops from
  8.2 MB to 1.3 MB as a result.
• The brick_validate command. It imported a brickschema.validate module
  that does not exist, and declared no console-script entry point, so it could
  neither be installed nor run.
• docs/requirements.txt, which was committed uv export output. Docs
  dependencies now come from the docs dependency group.

Changed

• The default Brick version is now 1.5 (was 1.4). Graph() and
  GraphCollection() load Brick 1.5 unless given brick_version=.
• The default SHACL engine is now shifty, falling back to topquadrant
  then pyshacl. Previously the order put topquadrant first. Inference and
  validation results may differ. Select explicitly with
  validate(engine=...) / compile(engine=...).
• validate() no longer modifies the graph. It previously ran compile()
  as a side effect, and only for the pyshacl engine.
• validate() and compile() raise ValueError for an unknown engine
  instead of returning None.
• compile(extra_graphs=[...]) no longer merges those graphs into the
  model. They drive inference; only inferred triples are added.
• expand() always returns self. It previously returned None for the
  rdfs profile and for +-joined profiles, which broke chaining.
• reasonable and pyshifty are now base dependencies, so the default
  OWL-RL backend and SHACL engine work on a plain pip install brickschema.
  The [reasonable] and [shifty] extras remain as empty aliases so existing
  install commands keep resolving.
• Dependency cleanup: dropped requests (never imported), moved
  pyontoenv to the dev group (used only by the test suite) and
  importlib-resources to [brickify]; dropped alembic and six from
  [persistence], where they were already transitive.
• __version__ is read from package metadata. It was hardcoded "0.2.0".
• Importing brickschema no longer calls logging.basicConfig() or prints
  to stdout, so it no longer reconfigures the root logger of the importing
  application.
• Minimum Python is 3.11. The README and docs previously claimed 3.6, 3.7 and
  3.8 in various places.

Added

• brickschema.shacl — the SHACL engine dispatch layer, exposing
  available_engines(), resolve(), infer() and validate(). infer()
  returns only newly inferred triples and never mutates its inputs.
• The brickify console script. It was documented in the README and
  docs/brickify/ but no entry point was ever declared, so
  pip install brickschema[brickify] provided no command.
• The brickschema[all] extra. It was referenced by the README and three
  documentation pages but never existed, so pip install brickschema[all]
  installed nothing extra.
• Package metadata: project URLs, trove classifiers and keywords. homepage
  had been declared using a Poetry key that hatchling silently ignores, so the
  published package carried no links, classifiers or keywords at all.

Fixed

• compile(engine="shifty") corrupted the graph. shifty round-trips its
  result through N-Triples, which relabels every blank node, so the diff
  against the input reported every blank-node triple as new and grafted a
  relabeled duplicate into the graph on each call. Brick is full of blank
  nodes, so a 77-triple graph grew to 126, 216 then 396 across three compiles.
  The graph is skolemized before inference, as the other engines already did,
  and compile() is now idempotent and matches pyshacl exactly.
• GraphCollection.remove_graph() recursed infinitely — it called itself.
• get_extensions() used str.strip(".ttl"), which strips a set of
  characters rather than a suffix, and emitted a spurious empty entry.
• Graph.load_file(source=...) could only ever try one format. rdflib
  closes the stream on a failed parse, so the ttl/n3/xml fallback failed with
  "I/O operation on closed file".
• expand("vbis") raised FileNotFoundError on any 1.4 or 1.5 graph, and
  TagInferenceSession failed for 1.4. vbis-masterlist.csv and
  taglookup.pickle are not packaged for every Brick version; both now fall
  back to the newest packaged copy.
• TagInferenceSession(rebuild_tag_lookup=True) wrote taglookup.pickle
  into the caller's working directory from its constructor. Use the new
  save_tag_lookup() to regenerate it deliberately.
• VBISTagInferenceSession.expand() raised KeyError for equipment whose
  class has no VBIS pattern.
• orm.py called sys.exit(1) at import time, and set points on generated
  classes so every instance of a Brick class shared one list.
• merge.py raised UnboundLocalError whenever every entity linked, and
  discarded its merge_types argument.
• persistent.py logged around ten print() calls from the commit path, and
  version_before() crashed when there was no earlier version.
• The Read the Docs build. It pinned Python 3.10 against
  requires-python >=3.11, so it could not install the package.