Avoid UNC paths on Windows

Cargo.lock

@@ -742,6 +742,7 @@ name = "dora-examples"
 version = "0.0.0"
 dependencies = [
  "dora-coordinator",
+ "dunce",
  "eyre",
  "tokio",
 ]
@@ -853,6 +854,12 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "dunce"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "453440c271cf5577fd2a40e4942540cb7d0d2f85e27c8d07dd0023c925a67541"
+
 [[package]]
 name = "either"
 version = "1.6.1"

Cargo.toml

@@ -24,6 +24,7 @@ license = "Apache-2.0"
 eyre = "0.6.8"
 tokio = "1.20.1"
 dora-coordinator = { path = "binaries/coordinator" }
+dunce = "1.0.2"
 
 [[example]]
 name = "c-dataflow"

examples/c++-dataflow/run.rs

@@ -19,14 +19,12 @@ async fn main() -> eyre::Result<()> {
     build_package("dora-node-api-c").await?;
     build_cxx_node(
         root,
-        &Path::new("node-c-api").join("main.cc").canonicalize()?,
+        &dunce::canonicalize(Path::new("node-c-api").join("main.cc"))?,
         "node_c_api",
     )
     .await?;
     build_cxx_operator(
-        &Path::new("operator-c-api")
-            .join("operator.cc")
-            .canonicalize()?,
+        &dunce::canonicalize(Path::new("operator-c-api").join("operator.cc"))?,
         "operator_c_api",
     )
     .await?;