Avoid gazebo str_pattern_extensions

Summary: Requires nightly.

Reviewed By: bobyangyf

Differential Revision: D41091467

fbshipit-source-id: f7b6cc23bf801c531e4d43f2995f445e73f1ec3e

Author: stepancheg

starlark_derive/Cargo.toml

@@ -14,10 +14,10 @@ proc-macro = true
 [dependencies]
 proc-macro2 = "1.0"
 syn = { version = "1.0.96", features = ["full", "extra-traits", "visit"] }
-gazebo = { workspace = true, features = ["str_pattern_extensions"] }
 gazebo_lint.version = "0.1"
 gazebo_lint.optional = true
 # @oss-disable: gazebo_lint.path = "../../gazebo_lint/gazebo_lint"
+gazebo = { workspace = true }
 quote = "1.0"
 
 [features]

starlark_derive/src/module/util.rs

@@ -15,7 +15,6 @@
  * limitations under the License.
  */
 
-use gazebo::prelude::*;
 use proc_macro2::TokenStream;
 use quote::quote;
 use syn::*;
@@ -35,7 +34,11 @@ pub(crate) fn is_type_name(x: &Type, name: &str) -> bool {
 }
 
 pub(crate) fn ident_string(x: &Ident) -> String {
-    x.to_string().trim_start_match("r#").to_owned()
+    let x = x.to_string();
+    match x.strip_prefix("r#") {
+        Some(x) => x.to_owned(),
+        None => x,
+    }
 }
 
 pub(crate) fn mut_token(x: bool) -> TokenStream {