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Add yanking guidance to the readme faq #104800

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merged 4 commits into from
Apr 17, 2024
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Add yanking guidance to the readme faq #104800

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69f7f1a
Original PR (#102636)
IanButterworth Mar 11, 2024
d1d257a
clarify that and why yanked versions can still instantiate
LilithHafner Apr 12, 2024
95f37d6
Major update
LilithHafner Apr 13, 2024
0466a7d
Apply suggestions from code review
LilithHafner Apr 17, 2024
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74 changes: 52 additions & 22 deletions README.md
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Expand Up @@ -78,7 +78,7 @@ Currently the waiting period is as follows:

## FAQ

#### Do I need to register a package to install it?
### 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
Expand All @@ -90,7 +90,7 @@ Registering allows the package to be added by `Pkg.add("Example")` or `] add Exa
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?
### 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!
Expand Down Expand Up @@ -121,14 +121,14 @@ for example [LocalRegistry.jl](https://github.com/GunnarFarneback/LocalRegistry.
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?
### 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.

#### Can my package be registered if it requires a version of Julia that is not yet released?
### Can my package be registered if it requires a version of Julia that is not yet released?

Yes, if your package is ready for use, it can be registered before Julia itself has a compatible release.
The [`compat` mechanism](https://pkgdocs.julialang.org/v1/compatibility/)
Expand All @@ -146,7 +146,7 @@ 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?
### 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
Expand All @@ -162,37 +162,37 @@ packages with proprietary software that use the environment variable check inclu
[`Gurobi.jl`](https://github.com/jump-dev/Gurobi.jl) and
[`CPLEX.jl`](https://github.com/jump-dev/CPLEX.jl).

#### My pull request has a merge conflict, what do I do?
### 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?
### 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](https://github.com/JuliaRegistries/Registrator.jl/blob/master/README.md).

#### I commented `@JuliaRegistrator register` on a pull request in the General registry, but nothing happened.
### 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?
### 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?
### 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][naming-guidelines].

#### What to do when asked to reconsider/update the package name?
### 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][naming-guidelines]. If you think that
Expand All @@ -213,7 +213,7 @@ As long as the package is not yet registered, renaming the package from
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?
### 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
Expand All @@ -234,7 +234,7 @@ has the same effect.
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?
### How do I transfer a package to an organization or another user?

- Use the [GitHub transfer option][github-transfer] in the settings.
- Manually, in the General edit the repo URL in package's `Package.toml` file (e.g [E/Example/Package.toml](https://github.com/JuliaRegistries/General/blob/master/E/Example/Package.toml#L3))
Expand All @@ -243,25 +243,24 @@ Technically if you skip the second step things will keep working, because GitHub
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?
### 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?
### 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?
### 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](https://opensource.org/licenses)?

### Can my package be registered without an [OSI approved license](https://opensource.org/licenses)?

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 licenses[^1] like GPL
Expand All @@ -271,25 +270,56 @@ See [these](https://github.com/JuliaRegistries/General/pull/31549#issuecomment-7
[^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.

#### Can my package registration PR be merged early?
### 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.
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](https://pkgdocs.julialang.org/v1/creating-packages/#Package-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](https://julialang.slack.com/archives/C6M4DQA5P) channel on the
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](https://julialang.slack.com/archives/C6M4DQA5P) 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?
### 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](https://julialang.slack.com/archives/C6M4DQA5P) slack channel before merging.
Registry maintainers are discouraged from merging packages they directly *or* indirectly maintain as mentioned in [CONTRIBUTING.md](https://github.com/JuliaRegistries/General/blob/master/CONTRIBUTING.md#other-ways-to-help).

### When is yanking a release appropriate?

Releases that have already merged can be marked as "yanked" by adding `yanked = true` under the release
entry in `Versions.toml` ([example](https://github.com/JuliaRegistries/General/pull/94858/files)). This
tells Pkg to no longer resolve those versions (e.g. when running `Pkg.add()` or `Pkg.resolve()`). However,
to maintain perfect reproducibility of environments specified with a full manifest, yanked versions that
are specifically listed in a manifest will continue to instantiate when running `Pkg.instantiate()` and
yanked versions cannot be re-registered in General with different source code.
LilithHafner marked this conversation as resolved.
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If a release is very broken (e.g. contains security vulnerabilities or bugs that are significantly worse
than the package erroring on load), then it may be yanked. Releasing an ordinary patch release—potentially
reusing the exact same source code as a previous release without the major bug—is a faster, easier to
deploy, and less disruptive way to prevent most users from installing a specific version. If you seek to
yank a very broken release, you should typically also release a patch release.

There is however, a special category of bugged releases that can not be resolved by having a patch release.
These also may to be resolved by yanking. That special category is when the compat bounds have been set too
wide. i.e. say `v2.10.0` was released using a feature not on julia `v1.6` but the compat entry for julia was
not raised in the release. In this case releasing a `v2.10.1` with the corrected julia compat would not
solve the issue as on julia v1.6 Pkg would still resolve the broken `v2.10.0`, and as a minor bump, reverting
the code changes would not be valid in a patch bump. In this case one may either submit a PR to retroactively
adjust the compat bounds of previous versions (best user-facing results, but slow and error-prone to implement)
or yank the offending release. See the [SciML collaborative practices for more guidance](https://github.com/SciML/ColPrac?tab=readme-ov-file#accidental-support-for-an-unsupported-dependency).

If yanking is urgent, open a PR and raise it on the `#pkg-registration` [slack channel](https://julialang.org/slack/)

For releases with actively exploited security vulnerabilities (i.e. malicious code) yanking is not suficient.
In this case, the release should be completely deleted from the registry and a new patch release should be
issued. This is a drastic measure that breaks reproducibility guarantees and has never been performed as of
April, 2024.

## 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.
Expand Down
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