Fix label of macos version in wheels (#1124)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

build_deps/build_pip_pkg.sh

@@ -23,6 +23,10 @@ function is_windows() {
   [[ "${PLATFORM}" =~ msys_nt*|mingw*|cygwin*|uwin* ]]
 }
 
+function is_macos() {
+  [[ "${PLATFORM}" == "darwin" ]]
+}
+
 if is_windows; then
   PIP_FILE_PREFIX="bazel-bin/build_pip_pkg.exe.runfiles/__main__/"
 else
@@ -37,7 +41,7 @@ function abspath() {
 
 function main() {
   DEST=${1}
-  BUILD_FLAG=${2}
+  NIGHTLY_FLAG=${2}
 
   if [[ -z ${DEST} ]]; then
     echo "No destination dir provided"
@@ -77,11 +81,17 @@ function main() {
   pushd ${TMPDIR}
   echo $(date) : "=== Building wheel"
 
-  if [[ -z ${BUILD_FLAG} ]]; then
+
+  BUILD_CMD="setup.py bdist_wheel"
+  if is_macos; then
+    BUILD_CMD="${BUILD_CMD} --plat-name macosx_10_13_x86_64"
+  fi
+
+  if [[ -z ${NIGHTLY_FLAG} ]]; then
     # Windows has issues with locking library files for deletion so do not fail here
-    ${_PYTHON_BINARY} setup.py bdist_wheel || true
+    ${_PYTHON_BINARY} ${BUILD_CMD} || true
   else
-    ${_PYTHON_BINARY} setup.py bdist_wheel "${2}" || true
+    ${_PYTHON_BINARY} ${BUILD_CMD} ${NIGHTLY_FLAG} || true
   fi
 
   cp dist/*.whl "${DEST}"