feat(xatu): scaffold project

Add the Xatu Rust package as a minimal hello-world skeleton with Cargo workspace metadata and Bazel library, binary, and test targets.

Cargo.lock

@@ -63,9 +63,9 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "4.6.6"
+version = "4.6.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "473c7e07f409a8d772161724aa8db6a765a2532a70f9667eeb7b49d3d02fbdca"
+checksum = "aa8876b300ab35ba921adea3dfd70157a46249b33f95c9084ae5709785478946"
 dependencies = [
  "clap_builder",
  "clap_derive",
@@ -73,9 +73,9 @@ dependencies = [
 
 [[package]]
 name = "clap_builder"
-version = "4.6.6"
+version = "4.6.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b48fea5a88e9ae728a2dcbedbfc0e730f7d60da42e1cb049a83c9fb8b789889"
+checksum = "ec0797fb7aeb1406c84efac526901f7ec3ead2124f946b494e72879d4b54704d"
 dependencies = [
  "anstream",
  "anstyle",
@@ -85,9 +85,9 @@ dependencies = [
 
 [[package]]
 name = "clap_derive"
-version = "4.6.4"
+version = "4.6.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d012d2b9d65aca7f18f4d9878a045bc17899bba951561ba5ec3c2ba1eed9a061"
+checksum = "f9c751b79415d4e559e3d1fcf128e09e720eb673a06d26cf6f392d37d75b66e0"
 dependencies = [
  "heck",
  "proc-macro2",
@@ -97,9 +97,9 @@ dependencies = [
 
 [[package]]
 name = "clap_lex"
-version = "1.1.0"
+version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c8d4a3bb8b1e0c1050499d1815f5ab16d04f0959b233085fb31653fbfc9d98f9"
+checksum = "1c133bc6a41be0d194c306b5506d15e6feeea7b1d6604bd3f8310dfb2ca96486"
 
 [[package]]
 name = "colorchoice"
@@ -113,13 +113,6 @@ version = "3.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7704b5fdd17b18ae31c4c1da5a2e0305a2bf17b5249300a9ee9ed7b72114c636"
 
-[[package]]
-name = "direct-cargo-bazel-deps"
-version = "0.0.1"
-dependencies = [
- "rnix",
-]
-
 [[package]]
 name = "hashbrown"
 version = "0.14.5"
@@ -264,9 +257,9 @@ checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
 
 [[package]]
 name = "syn"
-version = "3.0.5"
+version = "3.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12df2e0110f65b775f769bb17ef989067a1d931b2eb822bd4346631eeada89f9"
+checksum = "8593e8e72159ed2257d083c7a454a85cbf854f37a0966d8d483aff8c8a3ebcee"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -281,9 +274,9 @@ checksum = "f18aa187839b2bdb1ad2fa35ead8c4c2976b64e4363c386d45ac0f7ee85c9233"
 
 [[package]]
 name = "unicode-ident"
-version = "1.0.24"
+version = "1.0.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
+checksum = "ab72a15cf68d77cb0987d3684aa8a45c5ef827e8cb49ee2f30bfd7ba2feb519f"
 
 [[package]]
 name = "utf8parse"
@@ -306,6 +299,10 @@ dependencies = [
  "windows-link",
 ]
 
+[[package]]
+name = "xatu"
+version = "0.1.0"
+
 [[package]]
 name = "zmij"
 version = "1.0.23"

Cargo.toml

@@ -2,6 +2,7 @@
 members = [
     "src/ariadne",
     "src/nix-style-linter",
+    "src/xatu",
     "src/machoke",
 ]
 resolver = "3"

src/xatu/BUILD

@@ -0,0 +1,20 @@
+load("@rules_rust//rust:defs.bzl", "rust_binary", "rust_library", "rust_test")
+
+rust_library(
+    name = "xatu_lib",
+    crate_name = "xatu",
+    srcs = ["lib.rs"],
+)
+
+rust_binary(
+    name = "xatu",
+    crate_name = "xatu_cli",
+    srcs = ["main.rs"],
+    deps = [":xatu_lib"],
+)
+
+rust_test(
+    name = "lib_test",
+    srcs = ["lib_test.rs"],
+    deps = [":xatu_lib"],
+)

src/xatu/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "xatu"
+version = "0.1.0"
+edition = "2024"
+
+[lib]
+path = "lib.rs"
+
+[[bin]]
+name = "xatu"
+path = "main.rs"
+
+[dependencies]

src/xatu/lib.rs

@@ -0,0 +1,5 @@
+pub const GREETING: &str = "Hello from Xatu";
+
+pub fn greeting() -> &'static str {
+    GREETING
+}

src/xatu/lib_test.rs

@@ -0,0 +1,4 @@
+#[test]
+fn greeting_returns_hello_message() {
+    assert_eq!(xatu::greeting(), "Hello from Xatu");
+}

src/xatu/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("{}", xatu::greeting());
+}