using crates.io with buck

src/bin/BUCK

@@ -3,6 +3,6 @@ rust_binary(
     srcs = ["main.rs"],
     crate_root = "main.rs",
     deps = [
-        "//src/lib:hello_world",
+        "//third-party:semver",
     ],
 )

src/bin/main.rs

@@ -1,3 +1,19 @@
+use semver::{BuildMetadata, Prerelease, Version, VersionReq};
+
 fn main() {
-    hello_world::print_hello();
+    let req = VersionReq::parse(">=1.2.3, <1.8.0").unwrap();
+
+    // Check whether this requirement matches version 1.2.3-alpha.1 (no)
+    let version = Version {
+        major: 1,
+        minor: 2,
+        patch: 3,
+        pre: Prerelease::new("alpha.1").unwrap(),
+        build: BuildMetadata::EMPTY,
+    };
+    assert!(!req.matches(&version));
+
+    // Check whether it matches 1.3.0 (yes it does)
+    let version = Version::parse("1.3.0").unwrap();
+    assert!(req.matches(&version));
 }

third-party/BUCK

@@ -0,0 +1,39 @@
+alias(
+    name = "semver",
+    actual = ":semver-1.0.17",
+    visibility = ["PUBLIC"],
+)
+
+http_archive(
+    name = "semver-1.0.17.crate",
+    sha256 = "bebd363326d05ec3e2f532ab7660680f3b02130d780c299bca73469d521bc0ed",
+    strip_prefix = "semver-1.0.17",
+    urls = ["https://crates.io/api/v1/crates/semver/1.0.17/download"],
+    visibility = [],
+)
+
+rust_library(
+    name = "semver-1.0.17",
+    srcs = [":semver-1.0.17.crate"],
+    crate = "semver",
+    crate_root = "semver-1.0.17.crate/src/lib.rs",
+    edition = "2018",
+    features = [
+        "default",
+        "std",
+    ],
+    visibility = [],
+)
+
+rust_binary(
+    name = "semver-1.0.17-build-script-build",
+    srcs = [":semver-1.0.17.crate"],
+    crate = "build_script_build",
+    crate_root = "semver-1.0.17.crate/build.rs",
+    edition = "2018",
+    features = [
+        "default",
+        "std",
+    ],
+    visibility = [],
+)

third-party/Cargo.toml

@@ -0,0 +1,15 @@
+[workspace]
+
+[package]
+name = "rust-third-party"
+version = "0.0.0"
+publish = false
+edition = "2021"
+
+# Dummy target to keep Cargo happy
+[[bin]]
+name = "fake"
+path = "/dev/null"
+
+[dependencies]
+semver = "1.0.17"

third-party/reindeer.toml

@@ -0,0 +1 @@
+vendor = false

toolchains/BUCK

@@ -16,6 +16,7 @@ system_rust_toolchain(
 
 system_cxx_toolchain(
     name = "cxx",
+    linker = "link.exe",
     visibility = ["PUBLIC"],
 )