BEGIN_PUBLIC
Copybara import of the project:

--
d74a52728a28cffe3e5dce8a93af034a2f6c8672 by Naren Dasan <naren@narendasan.com>:

Add QNX as a possible constraint value

Have been using bazel to compile for QNX, would like to see it as a constraint value.

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PiperOrigin-RevId: 278626573
Change-Id: If0c7ddbc8f5d26e4d9d43bf19933e901760d1564
diff --git a/os/BUILD b/os/BUILD
index aefa0ee..dee2476 100644
--- a/os/BUILD
+++ b/os/BUILD
@@ -66,3 +66,8 @@
     name = "watchos",
     constraint_setting = ":os",
 )
+
+constraint_value(
+    name = "qnx",
+    constraint_setting = ":os",
+)