Uno

2.7.4

R Interface to the 'Uno' Nonlinear Optimization Solver

0packages depend

898downloads / year

88.1%test coverage

12/13checks pass

Overview

About

Maintained by Balasubramanian NarasimhanFirst published 2026-06-093 releasesCRAN page ↗GitHub ↗

Bindings to 'Uno' (Unifying Nonlinear Optimization), a C++ solver for smooth nonlinearly constrained optimization. 'Uno' unifies Lagrange-Newton methods, including sequential quadratic programming and interior-point methods, by decomposing them into interacting building blocks (constraint-relaxation, inequality-handling, Hessian, and globalization strategies) that can be freely combined, either through options or through presets that reproduce established solvers such as 'filterSQP' and 'IPOPT'. The framework is described in Vanaret and Leyffer (2024) doi:10.48550/arXiv.2406.13454.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)

install.packages("Uno", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("bnaras/Uno")

Development version from bnaras/Uno. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-uno

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-Uno

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

Health

CRAN checks

1NOTE12OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-gcc

Slowest check: 19.0 min · r-devel-windows-x86_64

Code health

Yes

Tests · ratio 0.03

88.1%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-06-11
11 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-09
5 OK · 0 NOTE · 0 WARNING · 2 ERROR · 0 FAILURE

Documentation

READMEYes · 309 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 60%
Return-value docs: 100%
References docs: 0%

Downloads

898

CRAN downloads in the past year

Rank #11,325 · ~2/day · ~75/mo

Releases R versions

Daily download trend is not available in this view yet.

28430 days

89890 days

8981 year

Compare downloads with other packages →

Also on20 r2u

Repository

GitHub ↗ bnaras/uno

1Stars

0Forks

0Open issues

0Open PRs

0Releases

32Commits

1Contributors

32 commits · Last activity 2026-06-16 · 0% stars, 30d

Stars over time

2026-06-16 · 12026-07-07 · 1

Repository practices

Upstream repositoryBeta

2 development-tooling and community-health practices detected across 2 families in the upstream repository

Checks run against github.com/bnaras/uno on 2026-07-31.

Continuous integration (1)

GitHub Actions

Git structural (1)

Submodules

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

7 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (1)

rmumps

LinkingTo (2)

cpp11 rmumps

Suggests (4)

cpp11 tinytest knitr rmarkdown

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (4)

Maintainer (1)

Balasubramanian Narasimhan

Author, Maintainer

Authors (3)

Balasubramanian Narasimhan

Author, Maintainer

Sven Leyffer

Author, Copyright holder

Charlie Vanaret

Author, Copyright holder

Sven Leyffer

Author, Copyright holder

Charlie Vanaret

Author, Copyright holder

HiGHS development team

Package Timeline

3 releases. Pick two to compare their code metrics. R releases are shown for context.

2.7.4Latest
2026-06-18 · current release · diff ↗
2.7.3-1
2026-06-11 · diff ↗
2.7.3
2026-06-09
R
R 4.6.0 released · 2026-04-24

Package metadata

First published: 2026-06-09
Total releases: 3 / 1 yrs
License: MIT + file LICENSE OSI
Download size: not tracked yet
Installed size: not tracked yet
With dependencies: not tracked yet

Report a problem with this page →