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-rwxr-xr-xx8
1 files changed, 7 insertions, 1 deletions
diff --git a/x b/x
index e656d37c1e4..551cfe6efbf 100755
--- a/x
+++ b/x
@@ -25,7 +25,13 @@ xpy=$(dirname "$(realpath "$0")")/x.py
 
 # On Windows, `py -3` sometimes works. We need to try it first because `python3`
 # sometimes tries to launch the app store on Windows.
-for SEARCH_PYTHON in py python3 python python2; do
+# On MacOS, `py` tries to install "Developer command line tools". Try `python3` first.
+# NOTE: running `bash -c ./x` from Windows doesn't set OSTYPE.
+case ${OSTYPE:-} in
+    cygwin*|msys*) SEARCH="py python3 python python2";;
+    *) SEARCH="python3 python py python2";;
+esac
+for SEARCH_PYTHON in $SEARCH; do
     if python=$(command -v $SEARCH_PYTHON) && [ -x "$python" ]; then
         if [ $SEARCH_PYTHON = py ]; then
             extra_arg="-3"