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Diffstat (limited to 'crates/tt/src/lib.rs')
-rw-r--r--crates/tt/src/lib.rs3
1 files changed, 3 insertions, 0 deletions
diff --git a/crates/tt/src/lib.rs b/crates/tt/src/lib.rs
index ea0752250d..d6a743c695 100644
--- a/crates/tt/src/lib.rs
+++ b/crates/tt/src/lib.rs
@@ -5,6 +5,9 @@
#![cfg_attr(feature = "in-rust-tree", feature(rustc_private))]
+#[cfg(feature = "in-rust-tree")]
+extern crate rustc_driver as _;
+
#[cfg(not(feature = "in-rust-tree"))]
extern crate ra_ap_rustc_lexer as rustc_lexer;
#[cfg(feature = "in-rust-tree")]