oximo v0.1.0

oximo v0.1.0

First public release of the oximo: a Rust algebraic modeling library for LP and MILP optimization.

Future support for nonlinear programming (NLP) and mixed-integer nonlinear programming (MINLP) planned.

Crates

Crate	Description
oximo	Umbrella crate with prelude and solver re-exports
oximo-expr	Arena-allocated expression tree
oximo-core	Model, Variable, Constraint, Objective, Set
oximo-solver	Solver trait, SolverResult, SolverStatus
oximo-io	MPS and LP file writers
oximo-highs	HiGHS backend (bundled, no install required)
oximo-gurobi	Gurobi backend (requires licensed install)
oximo-gams	GAMS solver bridge (requires GAMS on PATH)

Highlights

• Builder API for variables and constraints using standard Rust operators (+, -, *)
• Index sets (Set) with Cartesian products, filters, and rule-style constraint generation
• Indexed variables with per-key bounds via lb_by / ub_by
• HiGHS solver bundled out of the box - no system install needed
• Gurobi and GAMS backends behind optional features
• MPS and LP export via the io feature (on by default)
• Dual values and reduced costs in SolverResult

Usage

[dependencies]
oximo = "0.1"                                      # HiGHS + MPS/LP writers
oximo = { version = "0.1", features = ["gurobi"] } # add Gurobi
oximo = { version = "0.1", features = ["gams"] }   # add GAMS backend

Full Changelog: https://github.com/GermanHeim/oximo/commits/v0.1.0