X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=x.py;h=4f64ea9fae8b8391bd8dd330bb3a74bc0a9d628c;hb=23a4614238b48984dbc8fbcdbb9062b11f24eedb;hp=7973730ef177cd600aaf4baebe1b40a81ed1b085;hpb=04a2cbd1c80e76868dbbe093a890addb720eff5d;p=rust.git

diff --git a/x.py b/x.py
index 7973730ef17..4f64ea9fae8 100755
--- a/x.py
+++ b/x.py
@@ -4,6 +4,22 @@
 
 import os
 import sys
+
+# If this is python2, check if python3 is available and re-execute with that
+# interpreter.
+if sys.version_info.major < 3:
+    try:
+        # On Windows, `py -3` sometimes works.
+        # Try this first, because 'python3' sometimes tries to launch the app
+        # store on Windows
+        os.execvp("py", ["py", "-3"] + sys.argv)
+    except OSError:
+        try:
+            os.execvp("python3", ["python3"] + sys.argv)
+        except OSError:
+            # Python 3 isn't available, fall back to python 2
+            pass
+
 rust_dir = os.path.dirname(os.path.abspath(__file__))
 sys.path.append(os.path.join(rust_dir, "src", "bootstrap"))