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General

Workflow Status
AutoMerge AutoMerge status
Continuous Integration (CI) Continuous Integration (CI) status
TagBot Triggers TagBot Triggers status
Update Manifests Update Manifests status

General is the default Julia package registry. Package registries are used by Julia's package manager Pkg.jl and includes information about packages such as versions, dependencies and compatibility constraints.

The General registry is open for everyone to use and provides access to a large ecosystem of packages.

If you are registering a new package, please make sure that you have read the package naming guidelines.

Follow along new package registrations with the #new-packages-feed channels in the community Slack or Zulip!

See our Contributing Guidelines for ways to get involved!

Registering a package in General

New packages and new versions of packages are added to the General registry by pull requests against this GitHub repository. It is highly recommended that you use Registrator.jl to automate this process. Registrator can either be used as a GitHub App or through a web interface, as decribed in the Registrator README.

When Registrator is triggered a pull request is opened against this repository. Pull requests that meet certain guidelines is merged automatically, see Automatic merging of pull requests. Other pull requests need to be manually reviewed and merged by a human.

It is highly recommended to also use TagBot, which automatically tags a release in your repository after the new release of your package is merged into the registry.

Registered packages MUST have an Open Source Initiative approved license, clearly marked via the license file (see below for definition) in the package repository. Packages that wrap proprietary libraries (or otherwise restrictive libraries) are acceptable if the licenses of those libraries permit open source distribution of the Julia wrapper code. The more restrictive license of the wrapped code:

  1. MUST be mentioned in either the third party notice file or the license file (preferably the third party notice file).
  2. SHOULD be mentioned in the README file.

Please note that:

  • "README file" refers to the plain text file named README.md, README, or something similar.
  • "License file" refers to the plain text file named LICENSE.md, LICENSE, COPYING, or something similar.
  • "Third party notice file" refers to the plain text file named THIRD_PARTY_NOTICE.md, THIRD_PARTY_NOTICE, or something similar.

Automatic merging of pull requests

Pull requests that meet certain criteria are automatically merged periodically. Only pull requests that are opened by Registrator are candidates for automatic merging.

The full list of AutoMerge guidelines is available in the RegistryCI documentation.

Please report issues with automatic merging to the RegistryCI repo.

Currently the waiting period is as follows:

  • New Julia packages: 3 days (this allows time for community feedback)
  • New versions of existing packages: 15 minutes
  • JLL package (binary dependencies): 15 minutes, for either a new package or a new version

FAQ

Do I need to register a package to install it?

No, you can simply do using Pkg; Pkg.add(url="https://github.com/JuliaLang/Example.jl") or ] add https://github.com/JuliaLang/Example.jl in the Pkg REPL mode to e.g. install the package Example.jl, even if it was not registered. When a package is installed this way, the URL is saved in the Manifest.toml, so that file is needed to resolve Pkg environments that have unregistered packages installed.

Registering allows the package to be added by Pkg.add("Example") or ] add Example in the Pkg REPL mode. This is true if the package is installed in any registry you have installed, not just General; you can even create your own registry!

Should I register my package now?

If your package is at a stage where it might be useful to others, or provide functionality other packages in General might want to rely on, go for it!

We ask that you consider the following best practices.

  • It is easier for others to use your package if it has documentation that explains what the package is for and how to use it. This could be in the form of a README or hosted documentation such as that generated by Documenter.jl.
  • And in order to provide reliable functionality for your users, it is also important to setup tests (see the Pkg.jl docs and the Test stdlib docs), which can be automatically run by free continuous integration services such as GitHub Actions. As part of the test suite, tools like Aqua.jl and JET.jl can help you remove bugs or typos and improve the general quality of your code.

Packages like PkgTemplates.jl or PkgSkeleton.jl provide easy ways to setup documentation, tests, and continuous integration.

Some types of packages should not be registered, or are not yet ready for registration:

  • The General registry is not a place for "personal packages" that consist of collections of "utility functions" nor for packages that are only useful for a closed group (like a research group or a company). For that, it is easy to set up your own registry using for example LocalRegistry.jl. The Pkg documentation about registries might be useful if you decide to go this route.
  • "Empty" packages that do not yet have functionality are not ready to be registered.

Can my package in this registry depend on unregistered packages?

No. In this registry, your package cannot depend on other packages that are unregistered. In addition, your package cannot depend on an unregistered version of an otherwise registered package. Both of these scenarios would cause this registry to be unreproducible.

My pull request was not approved for automatic merging, what do I do?

It is recommended that you fix the release to conform to the guidelines and then retrigger Registrator on the branch/commit that includes the fix.

If you for some reason can't (or won't) adhere to the guidelines you will have to wait for a human to review/merge the pull request. You can contact a human in the #pkg-registration channel in the official Julia Slack to expedite this process.

My package fails to load because it needs proprietary software/additional setup to work, what can I do?

Before merging a pull request, AutoMerge will check that your package can be installed and loaded. It is OK for your package to not be fully functional, but making it at least load successfully would streamline registration, as it does not require manual intervention from the registry maintainers. This would also let other packages depend on it, and use its functionalities only when the proprietary software is available in the system, as done for example by the CUDA.jl package. If you are not able or willing to make your package always loadable without the proprietary dependency (which is the preferred solution), you can check if the environment variable JULIA_REGISTRYCI_AUTOMERGE is equal to true and make your package loadable during AutoMerge at least, so that it can be registered without manual intervention. Examples of packages with proprietary software that use the environment variable check include Gurobi.jl and CPLEX.jl.

My pull request has a merge conflict, what do I do?

Retrigger Registrator.

How do I retrigger Registrator in order to update my pull request?

Do what you did when you triggered Registrator the first time.

For more details, please see the Registrator.jl README.

I commented @JuliaRegistrator register on a pull request in the General registry, but nothing happened.

If you want to retrigger Registrator by using the Registrator comment-bot, you need to post the @JuliaRegistrator register comment on a commit in your repository (the repository that contains your package). Do not post any comments of the form @JuliaRegistrator ... in the JuliaRegistries/General repository.

AutoMerge is blocked by one of my comments, how do I unblock it?

Simply edit [noblock] into all your comments. AutoMerge periodically checks each PR, and if there are no blocking comments when it checks (i.e. all comments have [noblock] present), it will continue to merge (assuming of course that all of its other checks have passed).

Are there any requirements for package names in the General registry?

There are no hard requirements, but it is highly recommended to follow the package naming guidelines.

What to do when asked to reconsider/update the package name?

If someone comments on the name of your package when you first release it it is often because it does not follow the naming guidelines. If you think that your package should not follow those conventions for some reason or another, just explain why. Otherwise, it is often a good idea to just rename the package -- it is more disruptive to do so after it is already registered, and sticking to the conventions makes it easier for users to navigate Julia's many varied packages.

As long as the package is not yet registered, renaming the package from OldName.jl to NewName.jl is reasonably straightforward:

  • Rename the GitHub repository to NewName.jl
  • Rename the file src/OldName.jl to src/NewName.jl
  • Rename the top-level module to NewName
  • Rename the package name in Project.toml from OldName to NewName
  • Update tests, documentation, etc, to reference the new name
  • Once you are done renaming the package, retrigger registration. This will make a new pull request to General. It is helpful to comment in the old pull request that it can be closed, linking to the new one.

How do I rename an existing registered package?

Technically, you can't rename a package once registered, as this would break existing users. But you can re-register the package again under a new name with a new UUID, which basically has the same effect.

  • Follow the instructions above for renaming a package: rename on GitHub, rename files etc.
    • if you rename the repository so it has a new URL, make a PR to edit the URL stored in the registry for the old package name to point to the new URL (example). This allows the old versions of the package under the previous name to continue to work.
  • Generate a new UUID for the Project.toml
  • Increment the version in the Project.toml as a breaking change.
  • Register it as if it were a new package
  • Comment on the PR, that this is a rename.
  • It will have to go though the normal criteria for registring a new package.
    • In particular, even if you get it merged manually, it will need to wait 3 days from the PR being opened.
    • This gives others and yourself the chance to point out any naming issues.

You also should let your users know about the rename, e.g. by placing a note in the README, or opening PRs/issues on downstream packages to change over.

How do I transfer a package to an organization or another user?

Technically if you skip the second step things will keep working, because GitHub will redirect; but it is best practice. For this reason, when you try to register a new release, the Julia Registrator will complain if the second step is skipped.

How do I transfer a package to General from another registry?

You can simply register your next release in General (and don't change the package's name or UUID!). This will be treated as a new package registration in General and be subject to the usual 3-day waiting period. Once registered, Pkg.jl will look at all the versions from all registries it knows about, and use the compat mechanism to figure out what version to resolve to as usual, regardless if some versions are in different registries from others.

Where do I report a problem with a package in the General registry?

Report it to the package repository.

How do I remove a package or version from the registry?

You can't. Package registrations are permanent. A version can not be overwritten in the registry, and code cannot be deleted.

Can my package be registered without an OSI approved license?

No, sorry. The registry is maintained by volunteers, and we don't have a legal team who can thoroughly review licenses. It is very easy to accidentally wander into legally murky territory when combining common OSI licenses1 like GPL with non-OSI licenses and we don't want to subject Julia users to that risk when installing packages registered in General. See these comments for more discussion. We are not lawyers and this is not legal advice.

Can my package registration PR be merged early?

New packages must typically wait for the 3 day timer to expire before they are merged, either automatically by the bot or manually. This waiting period allows time for community comment and review, and to provide time to check things like:

  • the name is appropriate (e.g. "safe for work", not typosquatting, and fitting with the Pkg naming guidelines)
  • the package is functional and non-empty
  • the code is not malicious (e.g. exploiting security vulnerabilities)
  • there is some form of README or documentation to enable users to use the package

If there is some urgent need for the package to be registered (for example, an upcoming talk featuring the package or other external deadline), the waiting period can be expedited by request made in the #pkg-registration channel on the public Julia Language Slack, or directly on the PR itself. This request should include a link to the registration PR and why an expedited merge is needed. In this case, a registry maintainer (see below) can manually review the package (often with stricter standards than the typical package faces, given the lack of bandwidth to review all packages thoroughly).

Who can approve an early merge?

Any registry maintainer may merge a package registration PR early. Early merges should still be discussed on the #pkg-registration slack channel before merging. Registry maintainers are discouraged from merging packages they directly or indirectly maintain as mentioned in CONTRIBUTING.md.

Registry maintenance

The General registry is a shared resource that belongs to the entire Julia community. Therefore, we welcome comments and suggestions from everyone in the Julia community. However, all decisions regarding the General registry are ultimately up to the discretion of the registry maintainers.

See our Contributing Guidelines for ways to get involved!

Disclaimer

The General registry is open for everyone to register packages in. The General registry is not a curated list of Julia packages. In particular this means that:

  • packages included in the General registry are not reviewed/scrutinized;
  • packages included in the General registry are not "official" packages and not endorsed/approved by the JuliaLang organization;
  • the General registry and its maintainers are not responsible for the package code you install through the General registry -- you are responsible for reviewing your code dependencies.

Footnotes

  1. Note that even within the world of OSI licenses, there are combinations of OSI licenses which are not legal to use together, such as GPL2 with Apache2.

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