build: use now-stable async traits

.github/workflows/clippy_check.yml

@@ -7,7 +7,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
-            toolchain: nightly
+            toolchain: nightly-2023-10-28
             components: clippy
             override: true
       - uses: actions-rs/clippy-check@v1

Cargo.toml

@@ -35,7 +35,6 @@ static_assertions = "1.1"
 rustc-hash = "1.1"
 bincode = "1.3"
 annotate-snippets = "0.9.1"
-async-trait = "0.1.60"
 num-bigint = "0.4.3"
 derivative = "2.2.0"
 strsim = "0.10.0"
@@ -45,7 +44,7 @@ quote = "1.0"
 syn = "2.0"
 peg = "0.8.2"
 drop_bomb = "0.1.5"
-logos = "0.13.0"
+logos = "0.12.0"
 miette = "5.5.0"
 rowan = "0.15"
 text-size = "1.1"

crates/jrsonnet-evaluator/Cargo.toml

@@ -14,7 +14,7 @@ explaining-traces = ["annotate-snippets"]
 # Allows library authors to throw custom errors
 anyhow-error = ["anyhow"]
 # Adds ability to build import closure in async
-async-import = ["async-trait"]
+async-import = []
 
 # Allows to preserve field order in objects
 exp-preserve-order = []
@@ -54,8 +54,6 @@ anyhow = { workspace = true, optional = true }
 bincode = { workspace = true, optional = true }
 # Explaining traces
 annotate-snippets = { workspace = true, features = ["color"], optional = true }
-# Async imports
-async-trait = { workspace = true, optional = true }
 # Bigint
 num-bigint = { workspace = true, features = ["serde"], optional = true }
 derivative.workspace = true

crates/jrsonnet-evaluator/src/async_import.rs

@@ -1,6 +1,5 @@
-use std::{cell::RefCell, path::Path};
+use std::{cell::RefCell, future::Future, path::Path};
 
-use async_trait::async_trait;
 use jrsonnet_gcmodule::Trace;
 use jrsonnet_interner::IStr;
 use jrsonnet_parser::{
@@ -218,26 +217,37 @@ pub fn find_imports(expr: &LocExpr, out: &mut FoundImports) {
 	}
 }
 
-#[async_trait(?Send)]
 pub trait AsyncImportResolver {
 	type Error;
 	/// Resolves file path, e.g. `(/home/user/manifests, b.libjsonnet)` can correspond
 	/// both to `/home/user/manifests/b.libjsonnet` and to `/home/user/${vendor}/b.libjsonnet`
 	/// where `${vendor}` is a library path.
 	///
-	/// `from` should only be returned from [`ImportResolver::resolve`], or from other defined file, any other value
-	/// may result in panic
-	async fn resolve_from(&self, from: &SourcePath, path: &str) -> Result<SourcePath, Self::Error>;
-	async fn resolve_from_default(&self, path: &str) -> Result<SourcePath, Self::Error> {
-		self.resolve_from(&SourcePath::default(), path).await
+	/// `from` should only be returned from [`ImportResolver::resolve`],
+	/// or from other defined file, any other value may result in panic
+	fn resolve_from(
+		&self,
+		from: &SourcePath,
+		path: &str,
+	) -> impl Future<Output = Result<SourcePath, Self::Error>>;
+	fn resolve_from_default(
+		&self,
+		path: &str,
+	) -> impl Future<Output = Result<SourcePath, Self::Error>> {
+		async { self.resolve_from(&SourcePath::default(), path).await }
 	}
 	/// Resolves absolute path, doesn't supports jpath and other fancy things
-	async fn resolve(&self, path: &Path) -> Result<SourcePath, Self::Error>;
+	fn resolve(&self, path: &Path) -> impl Future<Output = Result<SourcePath, Self::Error>>;
 
 	/// Load resolved file
-	/// This should only be called with value returned from [`ImportResolver::resolve_file`]/[`ImportResolver::resolve`],
-	/// this cannot be resolved using associated type, as evaluator uses object instead of generic for [`ImportResolver`]
-	async fn load_file_contents(&self, resolved: &SourcePath) -> Result<Vec<u8>, Self::Error>;
+	/// This should only be called with value returned
+	/// from [`ImportResolver::resolve_file`]/[`ImportResolver::resolve`],
+	/// this cannot be resolved using associated type,
+	/// as the evaluator uses object instead of generic for [`ImportResolver`]
+	fn load_file_contents(
+		&self,
+		resolved: &SourcePath,
+	) -> impl Future<Output = Result<Vec<u8>, Self::Error>>;
 }
 
 #[derive(Trace)]

flake.nix

@@ -25,7 +25,7 @@
         lib = pkgs.lib;
         rust =
           (pkgs.rustChannelOf {
-            date = "2023-08-02";
+            date = "2023-10-28";
             channel = "nightly";
           })
           .default

rust-toolchain.toml

@@ -0,0 +1,3 @@
+[toolchain]
+channel = "nightly-2023-10-28"
+components = ["rustfmt", "clippy"]