Use OUT_DIR

implementations/rust/preserves-path/.gitignore

@@ -1 +0,0 @@
-src/schemas/**/*.rs

implementations/rust/preserves-path/build.rs

@@ -1,9 +1,10 @@
 use preserves_schema::compiler::*;
 
 use std::io::Error;
+use std::path::PathBuf;
 
 fn main() -> Result<(), Error> {
-    let buildroot = std::env::current_dir()?;
+    let buildroot = PathBuf::from(std::env::var_os("OUT_DIR").unwrap());
 
     let mut gen_dir = buildroot.clone();
     gen_dir.push("src/schemas");

implementations/rust/preserves-path/src/schemas/mod.rs

@@ -0,0 +1 @@
+include!(concat!(env!("OUT_DIR"), "/src/schemas/mod.rs"));