v0.8.0

[0.8.0] - 2026-09-25

First release since 0.7.9, and a breaking one: 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. 0.8.0a1, 0.8.0a2 and
0.7.10a1 were pre-releases of this version; this entry covers all changes since
0.7.9.

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 1.4 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=...).
• compile() with shifty writes inferred triples straight into the graph
  using pyshifty's in_place inference, so the graph is not copied or diffed.
  On GraphCollection and VersionedGraphCollection they go to the default
  graph, and SQL-backed graphs take them in one store transaction.
• 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.
• VersionedGraphCollection changesets are atomic. The changeset log,
  the graph writes and the precommit hooks run in one database transaction, so
  a failure rolls all of them back. undo() and redo() are atomic too, and
  changesets are written in batches rather than one statement per triple.
• VersionedGraphCollection's default graph is named
  urn:x-rdflib:default, as for Dataset. It was a fresh BNode each time
  the store was opened, which the SQL store handed back as a URIRef.
• reasonable and pyshifty (>=0.5.0) 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.
• [persistence] requires brickschema-rdflib-sqlalchemy>=0.7.1 (was
  >=0.6.1), which adds the store transactions above. It no longer pulls in
  alembic, mako or six, and the floor excludes 0.6.2, which wrongly
  installed flake8, tox, pytest and setuptools as runtime dependencies.
• Dependency cleanup: dropped requests (never imported), moved
  pyontoenv to the dev group (used only by the test suite) and
  importlib-resources to [brickify]. A plain install is 12 packages, down
  from 18.
• __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

• Brick 1.5, with its BOT, REC and VBIS alignments and its 223P
  extensions.
• brickschema.shacl — the SHACL engine dispatch layer, exposing
  available_engines(), resolve(), infer(), infer_in_place() and
  validate(). infer() returns only newly inferred triples and never
  mutates its inputs; infer_in_place() adds them to the data graph. Each
  accepts one ontology/shape graph or a list of them.
• 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.
• TagInferenceSession.save_tag_lookup(), to regenerate
  taglookup.pickle deliberately.
• 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

• GraphCollection.remove_graph() recursed infinitely — it called itself.
• GraphCollection.contexts() raised ValueError with rdflib's in-memory
  store: it checked contexts against brickschema's Graph class rather than
  rdflib.Graph.
• 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 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. It now builds
  the lookup in memory; see save_tag_lookup().
• 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.
• The docs showed expand("shacl"), which was removed before 0.7.9; they now
  use compile().