Automatically initialize submodule

.circleci/unittest/linux/scripts/install.sh

@@ -33,7 +33,6 @@ printf "Installing torchdata nightly\n"
 pip install --pre torchdata --extra-index-url https://download.pytorch.org/whl/nightly/cpu
 
 printf "* Installing torchtext\n"
-git submodule update --init --recursive
 python setup.py develop
 
 printf "* Installing parameterized\n"

.circleci/unittest/windows/scripts/install.sh

@@ -26,7 +26,6 @@ curl --output pywin32_postinstall.py https://raw.githubusercontent.com/mhammond/
 python pywin32_postinstall.py -install
 
 printf "* Installing torchtext\n"
-git submodule update --init --recursive
 "$root_dir/packaging/vc_env_helper.bat" python setup.py develop
 
 printf "* Installing parameterized\n"

packaging/torchtext/bld.bat

@@ -1,7 +1,4 @@
 @echo off
 
-git submodule update --init --recursive
-if errorlevel 1 exit /b 1
-
 python setup.py install --single-version-externally-managed --record=record.txt
 if errorlevel 1 exit /b 1

packaging/torchtext/build.sh

@@ -1,5 +1,4 @@
 #!/usr/bin/env bash
 set -ex
 
-git submodule update --init --recursive
 python setup.py install --single-version-externally-managed --record=record.txt

setup.py

@@ -4,6 +4,7 @@
 import os
 import shutil
 import subprocess
+import sys
 from pathlib import Path
 
 from build_tools import setup_helpers
@@ -44,6 +45,18 @@ def _export_version(version, sha):
         fileobj.write("git_version = {}\n".format(repr(sha)))
 
 
+def _init_submodule():
+    print(" --- Initializing submodules")
+    try:
+        subprocess.check_call(["git", "submodule", "init"])
+        subprocess.check_call(["git", "submodule", "update"])
+    except Exception:
+        print(" --- Submodule initalization failed")
+        print("Please run:\n\tgit submodule update --init --recursive")
+        sys.exit(1)
+    print(" --- Initialized submodule")
+
+
 VERSION, SHA = _get_version()
 _export_version(VERSION, SHA)
 
@@ -76,6 +89,7 @@ def run(self):
                 shutil.rmtree(str(path), ignore_errors=True)
 
 
+_init_submodule()
 setup_info = dict(
     # Metadata
     name="torchtext",