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About iminuit


Package license: LGPL-2.0-or-later

Feedstock license: BSD-3-Clause

Summary: Interactive Minimization Tools based on MINUIT



iminuit is designed from ground up to be fast, interactive and cython friendly. iminuit extract function signature very permissively starting from checking func_code down to last resort of parsing docstring (or you could tell iminuit to stop looking and take your answer). The interface is inspired heavily by PyMinuit and the status printout is inspired by ROOT Minuit. iminuit is mostly compatible with PyMinuit (with few exceptions). Existing PyMinuit code can be ported to iminuit by just changing the import statement.

Current build status

Travis macOS
Drone linux
linux_64_python3.6.____73_pypy variant
linux_64_python3.6.____cpython variant
linux_64_python3.7.____73_pypy variant
linux_64_python3.7.____cpython variant
linux_64_python3.8.____cpython variant
linux_64_python3.9.____cpython variant
linux_aarch64_python3.6.____73_pypy variant
linux_aarch64_python3.6.____cpython variant
linux_aarch64_python3.7.____73_pypy variant
linux_aarch64_python3.7.____cpython variant
linux_aarch64_python3.8.____cpython variant
linux_aarch64_python3.9.____cpython variant
linux_ppc64le_python3.6.____73_pypy variant
linux_ppc64le_python3.6.____cpython variant
linux_ppc64le_python3.7.____73_pypy variant
linux_ppc64le_python3.7.____cpython variant
linux_ppc64le_python3.8.____cpython variant
linux_ppc64le_python3.9.____cpython variant
osx_64_python3.6.____73_pypy variant
osx_64_python3.6.____cpython variant
osx_64_python3.7.____73_pypy variant
osx_64_python3.7.____cpython variant
osx_64_python3.8.____cpython variant
osx_64_python3.9.____cpython variant
osx_arm64_python3.8.____cpython variant
osx_arm64_python3.9.____cpython variant
win_64_python3.6.____cpython variant
win_64_python3.7.____cpython variant
win_64_python3.8.____cpython variant
win_64_python3.9.____cpython variant

Current release info

Name Downloads Version Platforms
Conda Recipe Conda Downloads Conda Version Conda Platforms

Installing iminuit

Installing iminuit from the conda-forge channel can be achieved by adding conda-forge to your channels with:

conda config --add channels conda-forge

Once the conda-forge channel has been enabled, iminuit can be installed with:

conda install iminuit

It is possible to list all of the versions of iminuit available on your platform with:

conda search iminuit --channel conda-forge

About conda-forge

Powered by NumFOCUS

conda-forge is a community-led conda channel of installable packages. In order to provide high-quality builds, the process has been automated into the conda-forge GitHub organization. The conda-forge organization contains one repository for each of the installable packages. Such a repository is known as a feedstock.

A feedstock is made up of a conda recipe (the instructions on what and how to build the package) and the necessary configurations for automatic building using freely available continuous integration services. Thanks to the awesome service provided by CircleCI, AppVeyor and TravisCI it is possible to build and upload installable packages to the conda-forge Anaconda-Cloud channel for Linux, Windows and OSX respectively.

To manage the continuous integration and simplify feedstock maintenance conda-smithy has been developed. Using the conda-forge.yml within this repository, it is possible to re-render all of this feedstock's supporting files (e.g. the CI configuration files) with conda smithy rerender.

For more information please check the conda-forge documentation.


feedstock - the conda recipe (raw material), supporting scripts and CI configuration.

conda-smithy - the tool which helps orchestrate the feedstock. Its primary use is in the construction of the CI .yml files and simplify the management of many feedstocks.

conda-forge - the place where the feedstock and smithy live and work to produce the finished article (built conda distributions)

Updating iminuit-feedstock

If you would like to improve the iminuit recipe or build a new package version, please fork this repository and submit a PR. Upon submission, your changes will be run on the appropriate platforms to give the reviewer an opportunity to confirm that the changes result in a successful build. Once merged, the recipe will be re-built and uploaded automatically to the conda-forge channel, whereupon the built conda packages will be available for everybody to install and use from the conda-forge channel. Note that all branches in the conda-forge/iminuit-feedstock are immediately built and any created packages are uploaded, so PRs should be based on branches in forks and branches in the main repository should only be used to build distinct package versions.

In order to produce a uniquely identifiable distribution:

  • If the version of a package is not being increased, please add or increase the build/number.
  • If the version of a package is being increased, please remember to return the build/number back to 0.

Feedstock Maintainers


A conda-smithy repository for iminuit.




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