Feat/rsquest (#187)

* QuEST CPU simulator C++ wrapped in Rust wrapped in Python support

Author: ciaranra

Cargo.lock

@@ -19,6 +19,7 @@ default-members = [
     "crates/pecos-rng",
     "crates/pecos",
     "crates/pecos-cli",
+    "crates/pecos-quest",
     "python/pecos-rslib/rust",
     "crates/benchmarks",
 ]
@@ -110,6 +111,9 @@ pecos-build-utils = { version = "0.1.1", path = "crates/pecos-build-utils" }
 pecos-ldpc-decoders = { version = "0.1.1", path = "crates/pecos-ldpc-decoders" }
 pecos-decoders = { version = "0.1.1", path = "crates/pecos-decoders" }
 
+# QuEST simulator wrapper
+pecos-quest = { version = "0.1.1", path = "crates/pecos-quest" }
+
 # Optimize build times
 [profile.dev]
 opt-level = 0          # No optimization for faster compilation

Cargo.toml

@@ -121,7 +121,7 @@ normalize-line-endings:  ## Normalize line endings according to .gitattributes
 lint-fix:  ## Fix all auto-fixable linting issues (Rust, Python, Julia)
 	@echo "Fixing Rust formatting..."
 	cargo fmt --all
-	cargo clippy --fix --workspace --all-targets --all-features --allow-staged
+	cargo clippy --fix --workspace --all-targets --all-features --allow-staged --allow-dirty
 	@echo ""
 	@echo "Running pre-commit fixes..."
 	uv run pre-commit run --all-files || true
@@ -156,8 +156,8 @@ rstest: qir-staticlib-if-needed  ## Run Rust tests
 	cargo test --workspace
 
 .PHONY: rstest-all
-rstest-all: qir-staticlib-if-needed  ## Run Rust tests with all features (includes WASM, decoders, etc.)
-	cargo test --workspace --all-features
+rstest-all: qir-staticlib-if-needed  ## Run Rust tests with all features except GPU
+	cargo test --workspace --all-features --exclude pecos-quest && cargo test -p pecos-quest
 
 # Decoder-specific commands
 # -------------------------

Makefile

@@ -31,6 +31,11 @@ pub const CHROMOBIUS_COMMIT: &str = "35e289570fdc1d71e73582e1fd4e0c8e29298ef5";
 pub const CHROMOBIUS_SHA256: &str =
     "da73d819e67572065fd715db45fabb342c2a2a1e961d2609df4f9864b9836054";
 
+/// QuEST library constants
+/// Used by QuEST quantum simulator wrapper
+pub const QUEST_COMMIT: &str = "v4.0.0";
+pub const QUEST_SHA256: &str = "e6a922a9dc1d6ee7c4d2591a277646dca2ce2fd90eecf36fd66970cb24bbfb67";
+
 /// Qulacs library constants
 /// Used by Qulacs quantum simulator
 pub const QULACS_VERSION: &str = "0.6.12";
@@ -98,6 +103,15 @@ pub fn chromobius_download_info() -> DownloadInfo {
     }
 }
 
+/// Create DownloadInfo for QuEST
+pub fn quest_download_info() -> DownloadInfo {
+    DownloadInfo {
+        url: format!("https://github.com/QuEST-Kit/QuEST/archive/refs/tags/{QUEST_COMMIT}.tar.gz"),
+        sha256: QUEST_SHA256,
+        name: format!("quest-{}", QUEST_COMMIT),
+    }
+}
+
 /// Create DownloadInfo for Qulacs
 pub fn qulacs_download_info() -> DownloadInfo {
     DownloadInfo {