There are no conan packages on Github, usually you can find recipes along (or separate) the sources. Yeah, the term conan "cache" may be a bit misleading, as i

There are no conan packages on Github, usually you can find recipes along (or separate) the sources. Yeah, the term conan "cache" may be a bit misleading, as it is not only a cache but really your "local remote". As soon as a recipe is in your cache, you can depend on it from your own recipes/conan builds. The actual building of the package may happen during the registration of the recipe or during resolve time when you depend on a certain package configuration. Any transitive dependencies will be resolved and, in case of --build missing, the packages will be built automatically according to the recipe. So no, you do not need to build any dependency packages (including transitive dependencies)