This monorepo contains a number of Rust crates that were created to support the cap-os operating system effort. The crates themselves are potentially useful to other projects, so we have gathered them in a separate repository where they can be published to crates.io.

The macros/ subdirectory contains macros used in compiling the tree:

• bitstruct! is a procedure macro that supports enhanced structure definitions that can specify with bitwise subfields. Our experience in cap-os and other projects has been that bitfields are often components of a larger type, and that defining them in isolation sometimes deprives them of context and weakens documentation.

The cargo/ subdirectory contains cargo plugins that have been helpful to us:

• cargo-mk is a simple monoworkspace build orchestrator that supports multi-architecture builds and full-tree builds.

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