Bugzilla

In order to facilitate more modern development practices within Thunderbird, we should enable Rust for development of both libraries and `xpcom` crates. In order to land this work, we require upstream support by way of elimination of RustLibrary() limits (Bug 1860246).

At minimum, we must provide:

 - A custom cargo workspace within `comm-central` that obeys the `mozilla-central-workspace-hack` requirements, to eliminate unnecessary rebuilds and ensure proper dependency management
 - Support for Rust xpcom components in Thunderbird
 - Build integrations to trivially extend our own equivalent of `gkrust` with new crates + xpcom components
 - Simple management of the Cargo.toml - such that we can safely reuse mozilla-central crates / xpcom without requiring upstream changes to the lock file
 - Easy rebase of the toml file (python script)
 - Ease of development experience with Thunderbirtod+Rust to lower the complexity and cost of feature delivery while leveraging memory safety + other desirable oxide traits

In order to facilitate more modern development practices within Thunderbird, we should enable Rust for development of both libraries and `xpcom` crates. In order to land this work, we require upstream support by way of elimination of RustLibrary() limits (Bug 1860246).

At minimum, we must provide:

 - A custom cargo workspace within `comm-central` that obeys the `mozilla-central-workspace-hack` requirements, to eliminate unnecessary rebuilds and ensure proper dependency management
 - Support for Rust xpcom components in Thunderbird
 - Build integrations to trivially extend our own equivalent of `gkrust` with new crates + xpcom components
 - Simple management of the Cargo.toml - such that we can safely reuse mozilla-central crates / xpcom without requiring upstream changes to the lock file
 - Easy rebase of the toml file (python script)
 - Ease of development experience with Thunderbird+Rust to lower the complexity and cost of feature delivery while leveraging memory safety + other desirable oxide traits