Don't Delete Releases or Files, Only (Partially) Hide their data.

[dstufft]

When an author deletes a release or a file this causes projects and distributions that depend on that release or file to have failed deployments. This Fixes that issue.

• When a File is deleted from PyPI it is marked as hidden in Crate
• When a Release is deleted from PyPI it is marked as hidden in Crate
• Hidden Files do not show up on the crate.io/package/*/ page
• Hidden Releases are displayed greyed out with a strike though on listing of versions, and their details are not displayed, instead a message stating it's been deleted is shown.
  • Deleted releases are not eligible for acting as the latest release when you go to the non version specific package page
• Hidden Releases and Files do not show up on the simple or restricted page [(simple|restricted).crate.io/package-name/].
• Hidden Releases and Files do show up on the version specific simple page [(simple|restricted).crate.io/package-name/version-number/].
  • Tools like pip (I know pip currently does) can check this page when a specific version is pinned (package-name==pacakge-version).
  • This allows pinning a version to not start failing because a package author decides to delete his or her releases from PyPI.

Basically this is designed to prevent this:

[dstufft]

This can be tested by:

• Visting https://crate.io/packages/crate-test/#all-versions
• Visting https://crate.io/packages/crate-test/0.11/
• Running pip install -i https://simple.crate.io/ crate-test
• Running pip install -i https://simple.crate.io/ crate-test==0.11