Commits on Sep 8, 2019

1. buildRustCrate: add support for renaming crates …

   Before this change, buildRustCrate always called rustc with
   
   --extern libName=[...]libName[...]
   
   However, Cargo permits using a different name under which a dependency
   is known to a crate. For example, rand 0.7.0 uses:
   
   [dependencies]
   getrandom_package = { version = "0.1.1", package = "getrandom", optional = true }
   
   Which introduces the getrandom dependency such that it is known as
   getrandom_package to the rand crate. In this case, the correct extern
   flag is of the form
   
   --extern getrandom_package=[...]getrandom[...]
   
   which is currently not supported. In order to support such cases, this
   change introduces a crateRenames argument to buildRustCrate. This
   argument is an attribute set of dependencies that should be renamed. In
   this case, crateRenames would be:
   
   {
     "getrandom" = "getrandom_package";
   }
   
   The extern options are then built such that if the libName occurs as
   an attribute in this set, it value will be used as the local
   name. Otherwise libName will be used as before.

   

   danieldk committed Sep 8, 2019
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