[libcxx] Update docs regarding the need for bash/posix tools for tests on Windows. NFC.
After 39bbfb77264a4a7a216921c2b70a30ba0f27eb56, bash is no longer
a hard requirement.
Differential Revision: https://reviews.llvm.org/D101779
NOKEYCHECK=True
GitOrigin-RevId: e87fb6d3875569bbc2e729732433e4865cdd1eff
diff --git a/docs/BuildingLibcxx.rst b/docs/BuildingLibcxx.rst
index 24e0a4c..c44ab9d 100644
--- a/docs/BuildingLibcxx.rst
+++ b/docs/BuildingLibcxx.rst
@@ -98,7 +98,10 @@
~~~~~~~~~~~~~~~~~~~~
Building with ninja is required for development to enable tests.
-Running the tests also requires a Bash shell and Python to be available.
+A couple of tests require Bash to be available, and a couple dozens
+of tests require other posix tools (cp, grep and similar - LLVM's tests
+require the same). Without those tools the vast majority of tests
+can still be ran successfully.
If Git for Windows is available, that can be used to provide the bash
shell by adding the right bin directory to the path, e.g.