v0.3.0

Highlights

This release contains lots of fixes, small (breaking) changes, and new features.
The biggest highlights are:

JLAP support

JLAP is a file format to incrementally update a cached repodata.json without downloading the entire file.
This can save a huge amount of bandwidth for large repodatas that change often (like those from conda-forge).
If you have a previously cached repodata.json on your system only small JSON patches are downloaded to bring your cache up to date.
The format was initially proposed through a CEP and has been available in conda as an experimental feature since 23.3.0.

When using rattler you get JLAP support out of the box.
No changes are needed.

Support for local file://

file:// based urls are now supported for all functions that use a Url to download certain data.

rattler_networking

A new crate has been added to facilitate authentication when downloading repodata or packages called rattler_networking.

Details

Added

• Support for detecting more platforms (#135)
• RepoData is now clonable (#138)
• RunExportsJson is now clonable (#169)
• file:// urls are now supported for package extraction functions (#157)
• file:// urls are now supported for repodata fetching (#158)
• Getting started with rattler using micromamba (#163)
• Add Platform::arch function to return the architecture of a given platform (#166)
• Extracted Python style JSON formatting into a separate crate (#163)
• Added feature to use rustls with rattler_package_streaming and rattler_repodata_gateway (#179 & #181)
• Expose version_spec module (#183)
• NamelessMatchSpec a variant of MatchSpec that does not include a package name #185)
• ShellEnum - a dynamic shell type for dynamic discovery #187)
• Exposed the python_entry_point_template function (#190)
• Enable deserializing virtual packages (#198)
• Refactored CI to add macOS arm64 (#201)
• Support for JLAP when downloading repodata (#197 & #214)
• Clone, Debug, PartialEq, Eq implementations for conda lock types (#213)
• rattler_networking to enable accessing repodata.json and packages that require authentication (#191)

Changed

• FileMode is now included with prefix_placeholder is set (#136)
• rattler_digest now re-exports commonly used hash types and typed hashes are now used in more placed (instead of strings) [#137 & #153]
• Use Platform in to detect running operating system (#144)
• paths.json is now serialized in a deterministic fashion (#147)
• Determine the subdir for the platform and arch fields when creating a PackageRecord from an index.json (#145 & #152)
• Activator::activation now returns the new PATH in addition to the script (#151)
• Use properly typed chrono::DateTime<chrono::Utc> for timestamps instead of u64 (#157)
• Made ParseError public and reuse ArchiveType (#167)
• Allow setting timestamps when creating package archive (#171)
• about.json and index.json are now serialized in a deterministic fashion (#180)
• SHA256 and MD5 hashes are computed on the fly when extracting packages (#176
• Change blake2 hash to use blake2b instead of blake2s (#192
• LibSolv error messages are now passed through (#202 & #210)
• VersionTree parsing now uses nom instead of a complex regex (#206
• libc version detection now uses lld --version to properly detect the libc version on the host (#209
• Improved version parse error messages (#211
• Parsing of some complex MatchSpecs (#217

Fixed

• MatchSpec bracket list parsing can now handle quoted values (#157)
• Typos and documentation (#164 & #188)
• Allow downloading of repodata.json to fail in some cases (only noarch is a required subdir) (#174)
• Missing feature when using the sparse index (#182)
• Several small issues or missing functionality (#184)
• Loosened strictness of comparing packages in Transactions (#186
• Missing noarch: generic parsing in links.json (#189
• Ignore trailing .0 in version comparison (#196