fix handling of uv_python

Author: blink1073

.evergreen/scripts/setup-dev-env.sh

@@ -26,22 +26,20 @@ else
   BIN_DIR=.venv/bin
 fi
 
-# Ensure there is a python venv.
-if [ ! -d $BIN_DIR ]; then
-  . $ROOT/.evergreen/utils.sh
-  set -x
+# Get the appropriate UV_PYTHON.
+. $ROOT/.evergreen/utils.sh
+set -x
 
-  if [ -z "${PYTHON_BINARY:-}" ]; then
-      if [ -n "${PYTHON_VERSION:-}" ]; then
-        PYTHON_BINARY=$(get_python_binary $PYTHON_VERSION)
-      else
-        PYTHON_BINARY=$(find_python3)
-      fi
-  fi
-  export UV_PYTHON=${PYTHON_BINARY}
-  echo "export UV_PYTHON=$UV_PYTHON" >> $HERE/env.sh
-  echo "Using python $UV_PYTHON"
+if [ -z "${PYTHON_BINARY:-}" ]; then
+    if [ -n "${PYTHON_VERSION:-}" ]; then
+      PYTHON_BINARY=$(get_python_binary $PYTHON_VERSION)
+    else
+      PYTHON_BINARY=$(find_python3)
+    fi
 fi
+export UV_PYTHON=${PYTHON_BINARY}
+echo "export UV_PYTHON=$UV_PYTHON" >> $HERE/env.sh
+echo "Using python $UV_PYTHON"
 
 # Add the default install path to the path if needed.
 if [ -z "${PYMONGO_BIN_DIR:-}" ]; then