Rollup merge of #45098 - sunjay:breakingrustfmtrls, r=alexcrichton

[rust.git] / CONTRIBUTING.md

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 0f6cba7a95e79a7010f432c415090d278b779018..4c296a28e90b4a2f8e19b8e6bfefe5a61040feef 100644 (file)
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -360,8 +360,10 @@ git add path/to/submodule
 
 outside the submodule.
 
-It can also be more convenient during development to set `submodules = false`
-in the `config.toml` to prevent `x.py` from resetting to the original branch.
+In order to prepare your PR, you can run the build locally by doing
+`./x.py build src/tools/TOOL`. If you will be editing the sources
+there, you may wish to set `submodules = false` in the `config.toml`
+to prevent `x.py` from resetting to the original branch.
 
 #### Breaking Tools Built With The Compiler
 [breaking-tools-built-with-the-compiler]: #breaking-tools-built-with-the-compiler