Re-export crate to avoid dependency in contract (Near-One#24)

Cargo.toml

@@ -21,6 +21,7 @@ homepage = "https://github.com/aurora-is-near/near-plugins"
 keywords = ["near", "smart contract", "plugin"]
 
 [workspace.dependencies]
+bitflags = "1.3"
 near-sdk = "4.0.0"
 near-plugins-derive = { path = "near-plugins-derive" }
 serde = "1"

near-plugins-derive/src/access_control_role.rs

@@ -39,6 +39,7 @@
 //! The last property aims to facilitate migrations which add or remove enum
 //! variants.
 
+use crate::utils::cratename;
 use proc_macro::TokenStream;
 use proc_macro2::{Ident, Span};
 use quote::quote;
@@ -51,6 +52,7 @@ const DEFAULT_BOUNDCHECKER_TYPE_NAME: &str = "__AclBoundchecker";
 
 pub fn derive_access_control_role(input: TokenStream) -> TokenStream {
     // This derive doesn't take attributes, so no need to use `darling`.
+    let cratename = cratename();
     let input: ItemEnum = parse_macro_input!(input);
     let ItemEnum {
         ident, variants, ..
@@ -175,7 +177,7 @@ pub fn derive_access_control_role(input: TokenStream) -> TokenStream {
             }
         }
 
-        ::bitflags::bitflags! {
+        ::#cratename::bitflags::bitflags! {
             /// Encodes permissions for roles and admins.
             #[derive(BorshDeserialize, BorshSerialize, Default)]
             struct #bitflags_type_ident: u128 {

near-plugins/Cargo.toml

@@ -9,6 +9,7 @@ version.workspace = true
 crate-type = ["cdylib", "rlib"]
 
 [dependencies]
+bitflags.workspace = true
 near-sdk.workspace = true
 near-plugins-derive.workspace = true
 serde.workspace = true

near-plugins/src/lib.rs

@@ -18,3 +18,15 @@ pub use near_plugins_derive::{
 pub use ownable::Ownable;
 pub use pausable::Pausable;
 pub use upgradable::Upgradable;
+
+// Re-exporting these dependencies avoids requiring contracts to depend on them.
+// For example, without re-exporting `bitflags` a contract using the access
+// control plugin would require:
+//
+// ```toml
+// # Cargo.toml
+// [dependencies]
+// bitflags = "x.y"
+// ```
+#[doc(hidden)]
+pub use bitflags;

near-plugins/tests/contracts/access_controllable/Cargo.toml

@@ -7,7 +7,6 @@ edition = "2018"
 crate-type = ["cdylib", "rlib"]
 
 [dependencies]
-bitflags = "1.3"
 near-plugins = { path = "../../../../near-plugins" }
 near-sdk = "4.0.0"