From e3a253d80f124f12b5ec3707216590eb5c0dccff Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Sat, 26 Oct 2019 17:20:44 +0300
Subject: [PATCH] document tasks module

---
 xtask/src/main.rs | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/xtask/src/main.rs b/xtask/src/main.rs
index 06aa3c8eca..34eb63eb34 100644
--- a/xtask/src/main.rs
+++ b/xtask/src/main.rs
@@ -1,5 +1,12 @@
-//! FIXME: write short doc here
-
+//! See https://github.com/matklad/cargo-xtask/.
+//!
+//! This binary defines various auxiliary build commands, which are not
+//! expressible with just `cargo`. Notably, it provides `cargo xtask codegen`
+//! for code genetaiont and `cargo xtask install` for installation of
+//! rust-analyzer server and client.
+//!
+//! This binary is integrated into the `cargo` command line by using an alias in
+//! `.cargo/config`.
 mod help;
 
 use core::fmt::Write;