Secondary target dependencies

[minghuaw]

Is it expected that the user need to add wit files of secondary dependencies into Cargo.toml?

For example, in this modified tutorial example (https://github.com/minghuaw/wasm-component-tutorial), package component:calculator imports component:add/add and component:sub/sub, and the corresponding wit files are included in the Cargo.toml file as follows

# calculator/Cargo.toml
[package.metadata.component.target.dependencies]
"component:add" = { path = "../add/wit/world.wit" }
"component:sub" = { path = "../sub/wit/world.wit" }

However, when importing component:calculator/calculate into package component:command, it would generate an error with

# command/Cargo.toml
[package.metadata.component.target.dependencies]
"component:calculator" = { path = "../calculator/wit/world.wit" }

but works fine if the above section is changed to

[package.metadata.component.target.dependencies]
"component:add" = { path = "../add/wit/world.wit" }
"component:sub" = { path = "../sub/wit/world.wit" }
"component:calculator" = { path = "../calculator/wit/world.wit" }