Fixed unresolved pwd template

cargo/cargo_build_script_runner/bin.rs

@@ -100,15 +100,6 @@ fn run_buildrs() -> Result<(), String> {
         }
     }
 
-    // Bazel does not support byte strings so in order to correctly represent `CARGO_ENCODED_RUSTFLAGS`
-    // the escaped `\x1f` sequences need to be unescaped
-    if let Ok(encoded_rustflags) = env::var("CARGO_ENCODED_RUSTFLAGS") {
-        command.env(
-            "CARGO_ENCODED_RUSTFLAGS",
-            encoded_rustflags.replace("\\x1f", "\x1f"),
-        );
-    }
-
     if let Some(ar_path) = env::var_os("AR") {
         // The default OSX toolchain uses libtool as ar_executable not ar.
         // This doesn't work when used as $AR, so simply don't set it - tools will probably fall back to
@@ -132,6 +123,16 @@ fn run_buildrs() -> Result<(), String> {
         }
     }
 
+    // Bazel does not support byte strings so in order to correctly represent `CARGO_ENCODED_RUSTFLAGS`
+    // the escaped `\x1f` sequences need to be unescaped
+    if let Ok(encoded_rustflags) = env::var("CARGO_ENCODED_RUSTFLAGS") {
+        command.env(
+            "CARGO_ENCODED_RUSTFLAGS",
+            encoded_rustflags
+                .replace("\\x1f", "\x1f"),
+        );
+    }
+
     let (buildrs_outputs, process_output) = BuildScriptOutput::outputs_from_command(&mut command)
         .map_err(|process_output| {
         format!(

test/cargo_build_script/build.rs

@@ -11,11 +11,14 @@ fn test_encoded_rustflags() {
     assert_eq!(flags.len(), 2);
 
     assert!(flags[0].starts_with("--sysroot"));
+
+    // Ensure the `pwd` template has been resolved
+    assert!(!flags[0].contains("${pwd}"));
+
     assert_eq!(flags[1], "--verbose");
 }
 
 fn main() {
-
     // Perform some unit testing
     test_encoded_rustflags();