solverforge-py 0.6.x: The Python Binding Runtime Bases

solverforge-py 0.6.15 is tagged on GitHub and published to PyPI (2026-10-18), so python3.14 -m pip install "solverforge==0.6.15" installs the current binding. The previous published package, solverforge 0.6.6, compiled onto the solverforge 0.19.4 runtime with solverforge-ui 0.7.0 assets.

The package targets CPython 3.14 and Rust 1.95.0, and its six SolverForge Rust dependencies are pinned to exact crates.io requirements in Cargo.toml and registry checksums in Cargo.lock: 0.22.0 with solverforge-ui 0.9.0 on 0.6.15 and 0.21.3 on 0.6.13/0.6.14, 0.21.2 through 0.6.12, and 0.19.7 through 0.6.10. There is no local path or Git dependency override.

What Changed

The binding moves to the 0.19.7 runtime line

0.6.7 picks up the SolverForge 0.19.7 construction and telemetry behavior for Python-authored models, and 0.6.8 completes the move onto that runtime line. Python models author constraints through callbacks and never write Rust, so the change is in the runtime the callbacks are compiled against rather than in the authoring surface.

Embedded UI assets move to solverforge-ui 0.9.0

0.6.9 and 0.6.10 align the exact SolverForge Rust crate set with 0.19.7 and embed the solverforge-ui 0.9.0 assets, so the FastAPI example apps serve the same browser shell the Rust use cases ship. The assets stay reachable through solverforge.ui.asset() and solverforge.ui.asset_paths().

The binding retargets to runtime 0.21.2 and 0.21.3

0.6.11 moves the six pinned SolverForge Rust dependencies to the published 0.21.0 registry base, 0.6.12 moves them to 0.21.2, 0.6.13/0.6.14 move them to 0.21.3, and 0.6.15 moves them to 0.22.0. Python-authored models gain the joined-tuple grouping, live-solution lending, owned search state, selector-subgraph fixes, net-route-delta precedence scoring, and the position-based membership updates of the 0.21 and 0.22 lines through callbacks without any Python surface change.

Direct dispatch for list-precedence constraints (0.6.14)

list_precedence_makespan compiles to its own plan variant and is scored directly, so full evaluation and insert/retract deltas no longer decode the generic plan dictionary or build cached Python rows. Per-plan dispatch keeps mixed constraint sets correct: plans that need Python fall back individually, and original plan indices preserve the existing caches. The parsed plan is cached once per constraint instead of per delta, the makespan achiever count is tracked instead of scanned per node, and route, diff, and probe scratch storage is reused across trials. 0.6.13 resolves assignment metadata fields once at import instead of string-keyed lookups in the construction path.

The Python surface is unchanged

0.6.7 through 0.6.10 keep the 0.6 Python API: Python classes, decorators, functions, and lambdas, with the native extension owning the working solution state so SolverForge can clone, mutate, and snapshot solutions safely. Callback constraints remain the single authoring surface.

Published Version Boundaries

Surface	Version	Runtime base
Documented source line	solverforge-py 0.6.14	solverforge 0.21.3, solverforge-ui 0.9.0
PyPI package	solverforge 0.6.14	solverforge 0.21.3, solverforge-ui 0.9.0
Previous package	solverforge 0.6.12	solverforge 0.21.2, solverforge-ui 0.9.0

Patch History

Version	Date	Notes
0.6.15	2026-10-18	Targets the solverforge 0.22.0 registry base.
0.6.14	2026-10-14	Direct list-precedence dispatch on the solverforge 0.21.3 registry base.
0.6.13	2026-10-14	Resolves assignment metadata fields once at import; solverforge 0.21.3 registry base.
0.6.12	2026-10-14	Published package on the solverforge 0.21.2 registry base.
0.6.11	2026-10-14	Pins the six SolverForge Rust dependencies to the published 0.21.0 registry base.
0.6.10	2026-09-29	Published package on the solverforge 0.19.7 base with solverforge-ui 0.9.0 assets.
0.6.9	2026-09-29	Aligns the exact SolverForge Rust crate set with 0.19.7 and embeds the solverforge-ui 0.9.0 assets.
0.6.8	2026-09-29	Moves the binding onto the SolverForge 0.19.7 runtime line.
0.6.7	2026-09-29	Picks up the 0.19.7 construction and telemetry behavior for Python-authored models.
0.6.6	2026-08-11	Aligns the exact SolverForge Rust crate set with 0.19.4, enforces imported row candidate sets across every native scalar mutation, and adds same_value_conflict_field for static assignment conflict graphs.

Upgrade Checklist

• Install the matching package after its Python release: python3.14 -m pip install "solverforge==0.6.15".
• Use the v0.6.15 tag for source-checkout work; the source line and the PyPI package share the version.
• The 0.6 Python API is unchanged, so models authored for 0.6.6 do not need editing to run on 0.6.15. Re-run the model’s tests against the new runtime base, since constraint and telemetry behavior comes from 0.22.0.

Where to read next

Use the SolverForge Python section for the current binding surface, the getting started guide for the install and run path, and the hospital and deliveries examples for complete FastAPI apps.