https://github.com/rubygems/rubygems/commit/ad26ccde38

https://github.com/rubygems/rubygems/commit/bc2537de71

It's defined in the superclass already.

https://github.com/rubygems/rubygems/commit/e269f5477b

Namely, when a gem has not previously been installed, and Bundler is
using the compact index API, fund metadata was not getting printed
because the proper delegation was not implemented in the specification
class used by the compact index.

https://github.com/rubygems/rubygems/commit/9ef5139f60

Looks for the CHECKSUMS section in the lockfile, activating the feature
only if the section exists. Without a CHECKSUMS section, Bundler will
continue as normal, validating checksums when gems are installed while
checksums from the compact index are present.

https://github.com/rubygems/rubygems/commit/2353cc93a4

Not strictly necessary, but there is no reason not to be helpful and set the path

https://github.com/rubygems/rubygems/commit/894c0303dd

Improve error reporting for checksums, raises a new error class.

Solve for multi-source checksum errors.

Add CHECKSUMS to tool/bundler/(dev|standard|rubocop)26_gems.rb

https://github.com/rubygems/rubygems/commit/26ceee0e76

Co-authored-by: Samuel Giddins <segiddins@segiddins.me>

code.
(https://github.com/rubygems/rubygems/pull/6917)

https://github.com/rubygems/rubygems/commit/2238bdaadc

This gets the specs passing, and handles the fact that we expect
checkums to be pinned only to a particular source

This also avoids reading in .gem files during lockfile generation,
instead allowing us to query the source for each resolved gem to grab
the checksum

Finally, this opens up a route to having user-stored checksum databases,
similar to how other package managers do this!

Add checksums to dev lockfiles

Handle full name conflicts from different original_platforms when adding checksums to store from compact index

Specs passing on Bundler 3

https://github.com/rubygems/rubygems/commit/86c7084e1c