Add LspError to explicity return errors from LSP handlers

Fixes #145

1 files changed, 3 insertions, 1 deletions

diff --git a/crates/ra_lsp_server/src/lib.rs b/crates/ra_lsp_server/src/lib.rs
index f1b17f282..ce77b2a33 100644
--- a/crates/ra_lsp_server/src/lib.rs
+++ b/crates/ra_lsp_server/src/lib.rs
@@ -12,6 +12,8 @@ extern crate rayon;
 extern crate log;
 extern crate cargo_metadata;
 extern crate drop_bomb;
+#[macro_use]
+extern crate failure_derive;
 extern crate im;
 extern crate relative_path;
 extern crate rustc_hash;
@@ -34,4 +36,4 @@ pub mod thread_watcher;
 mod vfs;
 
 pub type Result<T> = ::std::result::Result<T, ::failure::Error>;
-pub use crate::{caps::server_capabilities, main_loop::main_loop};
+pub use crate::{caps::server_capabilities, main_loop::main_loop, main_loop::LspError};
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