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General

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.

Registering a package in General

New packages and new versions of packages are added 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 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.

Automatic merging of pull requests

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

The following criteria are applied for all pull requests (regardless if it is a new package or just a new version):

  • Version number: Should be a standard increment and not skip versions. This means incrementing the patch/minor/major version with +1 compared to previous (if any) releases. If, for example, 1.0.0 and 1.1.0 are existing versions, valid new versions are 1.0.1, 1.1.1, 1.2.0 and 2.0.0. Invalid new versions include 1.0.2 (skips 1.0.1), 1.3.0 (skips 1.2.0), 3.0.0 (skips 2.0.0) etc.

  • Dependencies: All dependencies should have [compat] entries that are upper bounded. Examples:

    [compat]
    PackageA = "1"        # [1.0.0, 2.0.0), has upper bound (good)
    PackageB = "0.1, 0.2" # [0.1.0, 0.3.0), has upper bound (good)
    PackageB = ">=3"      # [3.0.0, ∞), no upper bound (bad)

    See Pkg's documentation for specification of [compat] entries in your Project.toml file. (Note: Standard libraries are excluded for this criterion since they are bundled with Julia, and, hence, implicitly included in the [compat] entry for Julia. For the time being, JLL dependencies are also excluded for this criterion because they often have non-standard version numbering schemes; however, this may change in the future.)

    You may find CompatHelper.jl helpful for maintaining up-to-date [compat] entries.

  • Package installation: The package should be installable (Pkg.add("PackageName")), and loadable (import PackageName).

The following list is applied for new package registrations, in addition to the previous list:

  • Package name: Should start with a capital letter, contain only ASCII alphanumeric characters, and be at least 5 characters long.
  • Version number: Should be a standard initial version number, e.g. 0.0.1, 0.1.0, or 1.0.0.
  • Repository URL: Should end with $PackageName.jl.git where PackageName is the package name.

For more details, see Automatic merging guidelines. Please report issues with automatic merging to the RegistryCI repo.

FAQ

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 expediate this process.

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.

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
  • Update tests, documentation, etc, to reference the new name

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

Report it to the package repository.

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.

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