Document why we download rust-mingw

rust-lang · Mar 1, 2018 · 5332d9a · 5332d9a
1 parent 39d0b05
commit 5332d9a
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/bootstrap/bootstrap.py b/src/bootstrap/bootstrap.py
@@ -351,6 +351,9 @@ def download_stage0(self):
             with open(self.rustc_stamp(), 'w') as rust_stamp:
                 rust_stamp.write(self.date)
 
+            # This is required so that we don't mix incompatible MinGW
+            # libraries/binaries that are included in rust-std with
+            # the system MinGW ones.
             if "pc-windows-gnu" in self.build:
                 filename = "rust-mingw-{}-{}.tar.gz".format(
                     rustc_channel, self.build)