Pyomo

-------------------------------------------------------------------------------

- General
- Distribute the ampl_function_demo C source / cmake files (2319)
- Add GitHub URL to setup.py for PyPI (2325)
- Use constant indentation for long lines in the HierarchicalTimer (2336)
- Core
- Remove incomplete pyomo/core/base/alias.py module (2284)
- Remove Python 3.6 support (2312)
- Solver Interfaces
- Remove PICO solver interface (2341)
- Testing
- Add Windows pip single test (2334)
- Fix test docstrings in piecewise to silence warnings (2342)
- Contributed Packages
- APPSI: Update Gurobi solver unavailable message (2320)
- APPSI: Remove distributables for Windows (2326)
- APPSI: Fix bugs when working with the Gurobi solution pool (2335)
- APPSI: Fix bug in persistent update for FBBT (2340)
- Preprocessing: Stop using polynomial_degree to check for linear and
constant expressions (2324)
- PyNumero: Improve coverage of mpi block matrix tests (2318)
- PyNumero: Skip bound/domain validation in ExternalPyomoModel (2323)
- PyNumero: Remove deprecated usage of numpy.bool (2339)
- PyROS: Fix variable default initialization (2331)

-------------------------------------------------------------------------------

-------------------------------------------------------------------------------

ADVANCE CHANGE NOTICE
- This will be the last release to support Python 3.6.

- General
- Construct slices with normalized indices in slicing utility (2223)
- Remove hard-coded project name from default attempt_import() message (2237)
- Add --with-distributable-extensions option to setup.py (2260)
- Update Pyomo versioning to always include the micro version number (2265)
- Remove optional_packages from pyomo.environ (2195)
- Add Python 3.10 as an officially-supported interpreter (2302)
- `TempfileManager` updates (deletion order, add context) (2297)
- Add `report_scaling` utility to detect potential scaling issues (2252)
- Core
- Check Var bounds when setting values (2196)
- Fix bug in implicit Var construction (2210)
- Add support for user-defined Component List starting index (2215)
- Switch Var.value setter to validate values (2214)
- Overload component initializers with named keyword params (2212, 2230)
- Resolve errors when creating Reference to a scalar Set (2229)
- Standardize scalar-valued external function interfaces (2231)
- Resolve bugs in cloning _ImplicitAny domains (2233)
- Redesign Var.stale handling to use a global state flag (2249)
- Update differentiate() to accept string mode identifiers (2266)
- Add `as_quantity`: evaluate a Pyomo expression to a pint `Quantity` (2222)
- NPV_SumExpression to inherit from NPV_Mixin (2209)
- Add support for `abs` in numeric differentiation (2232)
- Search filesystem for AMPLExternalFunction library (2305)
- Documentation
- Updates to installation documentation (2259)
- Update GDP references (2300)
- Add example AMPL external function library (2295)
- Solver Interfaces
- Disable log file in gurobi_direct when keepfiles=False (2203)
- Remove old GLPK interfaces (2256)
- Support gurobi lp interface through gurobipy module (2262)
- Update CBC version identification (2250)
- Increase CBC timeout when getting version/asl compatibility (2293)
- Deprecate the `Alias` component (2288)
- Remove XPRESS interface (2273)
- Support string arguments in NL external functions (2295)
- Fix reversed NL operator codes for floor/ceil (2216)
- Testing
- Skip some fileutils tests on OSX Big Sur and Python<3.8 (2224)
- Fix Windows/Python 3.6 testing dependency (2234)
- Update test suite for BARON 22.1.19 (2268)
- Rework coverage uploads to use GitHub Actions (2225)
- Add option to test driver for turning off log capture (2198)
- Relaxing timing target for Windows GHA (2303)
- Resolve GDP test failure for missing solvers (2306)
- Testing infrastructure Refactor: `nosetests` to `pytest` (2298)
- Make time limit more robust for APPSI (2296)
- Resolve failing floating-point comparison failures in FBBT (2244)
- Check gurobipy availability in doctests (2253)
- GDP Updates
- Ensure gdp.fix_disjuncts always creates a fully algebraic model (2263)
- Add `partition_disjuncts` and `between_steps` transformations (2221)
- Contributed Packages
- APPSI: Fix bug with CBC options (2243)
- APPSI: Correctly identify changes to constraints (2299)
- APPSI: Improvements to persistent interface (2246)
- APPSI: Implement FBBT in C++ module (2248)
- APPSI: Resolve build errors on Windows (2309)
- GDPopt: Fix bugs in preprocessing (2211)
- GDPopt: Switch preprocessing to use FBBT (2264)
- incidence_analysis: General improvements (2239, 2240)
- MindtPy: Update online docs and logging (2219, 2207)
- MindtPy: Add Primal/Dual Integral (2285)
- MindtPy: Nonlinear sum reformulation of objective of MINLP (2276)
- Parmest: Covariance matrix (2287), Add examples (2274)
- PyNumero: Add scaling factor support to ExternalPyomoModel (2269)
- PyNumero: Use projected NLPs for ExternalPyomoModel inner problems (2283)
- PyNumero: Add SQP example (2291)
- PyROS: Support ConstraintList and range constraints (2206)
- PyROS: Add optional bypassing of global separation subproblems (2254)
- TrustRegion: New implementation of Trust Region Framework (2238, 2279)

-------------------------------------------------------------------------------

-------------------------------------------------------------------------------

- General
- Add ListOf domain validator for ConfigValue (2103)
- Remove deprecated calls to warnings.warning (2106)
- Add Bool and Integer domain validators (2110)
- Overhaul of Pyomo TempfileManager (2109)
- Allow passing tuples and expressions to
calculate_variable_from_constraint() (2133)
- Add external functions to block in create_subsystem_block (2142)
- Track changes in pint 0.18 and Xpress 8.13.0 (2168)
- Remove code deprecated in Pyomo version 5.6 or older (1992)
- Add Linux aarch64 wheel build support (2076)
- Update wheel creation GitHub Actions version (2192)
- Remove optional_packages from pyomo.environ (2195)
- Ignore bounds/domain when updating variable value in
calculate_variable_from_constraint() (2177)
- Core
- Fix Expression.getitem when initialized with Skip (2136)
- Support hierarchical models in logical_to_linear transformation (2135)
- Add ordered=True API for iterating over IndexedComponents (2149)
- Fix bug in differentiate module related to reused subexpressions (2148)
- Rework expression replacement and LinearExpression object (2143)
- Add support for custom pint registries (2153)
- Add support for solving blocks and targets in logical_to_linear
transformation (2147)
- Add support for finding components with a ComponentUID (2178)
- Fix bugs with open NumericRanges (2170, 2179)
- Fix bugs with References (2158)
- Fix Initializer by treating pandas.Series as sequences (2151)
- Fix Initializer support for ConfigList/ConfigDict (2200)
- Add a DataFrameInitializer (2150)
- Add a public API for retrieving variable bound expressions (2172)
- Rework Var component to leverage Initializer (2184)
- Documentation
- Expand documentation of pyomo.common (2104)
- Minor documentation fixes (2117)
- Solver Interfaces
- Issue warning when using the Xpress LP/MPS interface (2125)
- Disable implicit repn cache for LP and NL writers (2144)
- Add option to force variables into an NL file (2152)
- Add the exception to the NEOS connection failure warning message (2166)
- Improve GAMS writer performance (2191)
- Testing
- Resolve test failures when no solvers are available (2146)
- Resolve NumericValue support in assertStructuredAlmostEqual (2200)
- Fix typo in booktest skip declaration (2186)
- DAE Updates
- Utility function to slice individual components in flatten module (2141)
- Fix errors and deprecation warnings in some DAE examples (2189)
- Fix bug allowing numpy.float64 types to end up in a ContinuousSet (2193)
- GDP Updates
- Update GDP transformations to handle logical constraints (2175)
- Contributed Packages
- APPSI: Add support for external functions in NL writer (2111)
- APPSI: Improved handling of immutable parameters (2112)
- PyNumero: Pass AMPLFUNC directly to pynumero_ASL and not through
environment (2114, 2129)
- PyNumero: ExternalPyomoModel performance improvements (2155)
- PyNumero: Remove exception when variable bounds are equal (2121)
- Parmest: Add support for indexed variables (2108)
- incidence_analysis: Simplify extraction of diagonal blocks from a block
triangularization (2128)
- GDPopt: Make line endings PEP8 compliant (2173)
- MindtPy: Add support for MIP solver solution pools (2164)
- MindtPy: Skip specific tests due to failure with Gurobi 9.5.0 on
Windows (2183)
- MindtPy: Fix feasibility pump and fixed variable detection (2185, 2187)
- PyROS: Add uncertain variable bounds detection (2159)

-------------------------------------------------------------------------------

-------------------------------------------------------------------------------

- General
- Add test for missing/extra __init__.py files (2090)
- Update deprecation warnings to only be emitted once per context (2095)
- Core
- Replace Set.card() with Set.at() (2096)
- DAE
- Remove use of OrderedSet.__getitem__ from contset.py (2091)
- Contributed Packages
- APPSI: Build/install APPSI extension outside of source tree (2092)
- MindtPy: Support gurobi_persistent in LP/NLP-based B&B algorithm (2071)

-------------------------------------------------------------------------------

-------------------------------------------------------------------------------

- General
- Adding missing __init__.py files across Pyomo (2086)

-------------------------------------------------------------------------------

-------------------------------------------------------------------------------

- General
- Support using TicTocTimer as a context manager (2012)
- Add optional dependency target in setup.py (2017)
- Added utilities for subsets of model components (1998)
- Improvements in deprecation warning system (2045, 2058, 2056)
- Resolve TeeStream deadlock issues (2072)
- Move PYOMO_CONFIG_DIR into pyomo.common.envvar (2065)
- Add a DynamicImplicitDomain domain validator (2043)
- Generate standard repn misidentifies nonlinear expr (2074)
- Add Module() validator to the config system (2062)
- Core
- Yield Iterator from IndexedComponent (2007)
- Use yield from in pyomo.core (1984)
- Improvements to sorted_robust and string formatting (2020, 2024)
- Integrating numpy with the Pyomo expression system (2027, 2034, 2070)
- Resolve Set bugs (2048)
- Prevent attaching global Sets to Blocks (2042)
- Correct scalar mutable param getitem implementation (2066)
- Fix Var bounds with unitted mutable Params (2067)
- Improve disable_methods decorator (2069)
- Allow native numeric types in relational expressions (2073)
- Fixing symbol names in Initializer deprecation layer (2079)
- Deprecate OrderedSet.__getitem__ in favor of OrderedSet.card() (2053)
- Documentation
- Create a list of related packages (2016)
- Solver Interfaces
- Clean up dependencies and solver.available() IO (2011)
- Update Baron writer to recognize priority Suffix (2035)
- Add OCTERACT to the list of known NEOS solvers (2064)
- Resolve tee issues with Xpress 8.9+ (2059)
- Increase timeout for ASL version request (2083)
- Testing
- Miscellaneous testing fixes (2023)
- Improve management of tempfiles in tests (2036)
- Update GHA to ubuntu-latest; resolve ampl/mp build error (2015)
- Move constrained_layout tests to 'expensive' suite (2018)
- Update xpress, appsi tests to manage CWD (2031)
- Improve comparison of Book examples to baselines (2044)
- Add retry/timeout to powershell downloads (2077)
- GDP Updates
- gdp.hull: Only create one disaggregated variable for all Disjuncts in
which a Var does not appear (2005)
- Contributed Packages
- FBBT: descend_into option for FBBT (2025)
- FBBT: Interval arithmetic edge cases for FBBT (2026)
- FBBT: Improved handling for product expressions (2038)
- incidence_analysis: methods for generating and solving strongly
connected components of a square model (2009)
- incidence_analysis: Add Dulmage-Mendelsohn partition (2063)
- PETSc: Remove PETSc solver (1986)
- PyROS: Pyomo Robust Optimization Solver (2006, 2061)
- sensitivity_toolbox: Add kaug dsdp mode (1613)
- APPSI: API Cleanup (1944), bug-fix in update_variables (2051)
- MindtPy: Increase code coverage (2021)
- MindtPy: Replace is not by != (2081)
- PyNumero: ExternalGreyBox subclass to embed implicit functions (2022)


-------------------------------------------------------------------------------