diff --git a/requirements.txt b/requirements.txt
index db5c584b2187550f56ec03c8793ac64951c74989..2a3f06514379a351dd6a5f759601600f845a61a7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,12 +19,12 @@ tqdm
 typeguard
 visualdl==2.2.0
 yacs
-numpy
+numpy==1.20.0
+numba
 nltk
 inflect
 librosa
 unidecode
-numba
 llvmlite
 matplotlib
 pandas
@@ -39,4 +39,4 @@ timer
 pyworld
 jieba
 phkit
-yq
\ No newline at end of file
+yq
diff --git a/setup.cfg b/setup.cfg
new file mode 100644
index 0000000000000000000000000000000000000000..625454805b47e1f93cc675f06c55e9604a2abc65
--- /dev/null
+++ b/setup.cfg
@@ -0,0 +1,9 @@
+[build_ext]
+debug=0
+
+[metadata]
+license_file = LICENSE
+description-file = README.md
+
+[magformat]
+formatters=yapf
diff --git a/setup.py b/setup.py
index 4073d758a1e389b26c18f8df4fd19cf2471a040d..32575b4adc817650cb914e631c9bf47b2c397925 100644
--- a/setup.py
+++ b/setup.py
@@ -14,6 +14,7 @@
 import io
 import os
 import re
+import sys
 from pathlib import Path
 import contextlib
 import inspect
@@ -31,10 +32,8 @@ HERE = Path(os.path.abspath(os.path.dirname(__file__)))
 def pushd(new_dir):
     old_dir = os.getcwd()
     os.chdir(new_dir)
-    try:
-        yield
-    finally:
-        os.chdir(old_dir)
+    yield
+    os.chdir(old_dir)
 
 
 def read(*names, **kwargs):
@@ -43,7 +42,7 @@ def read(*names, **kwargs):
         return fp.read()
 
 
-def check_call(cmd: str, shell=True, executable=None):
+def check_call(cmd: str, shell=False, executable=None):
     try:
         sp.check_call(cmd.split(),
                       shell=shell,
@@ -53,49 +52,55 @@ def check_call(cmd: str, shell=True, executable=None):
             f"{__file__}:{inspect.currentframe().f_lineno}: CMD: {cmd}, Error:",
             e.output,
             file=sys.stderr)
+        raise e
 
 
-def _pre_install():
+def _pre_install(install_lib_dir):
     # apt
-    check_call("apt-get update -y")
+    check_call("apt-get update -y", False)
     check_call("apt-get install -y " + 'vim tig tree sox pkg-config ' +
                'libsndfile1 libflac-dev libogg-dev ' +
-               'libvorbis-dev libboost-dev swig python3-dev ')
+               'libvorbis-dev libboost-dev swig python3-dev ', False)
+    print("apt install.")
     # tools/make
     tool_dir = HERE / "tools"
-    # for f in tool_dir.glob("*.done"):
-    #     f.unlink()
+    for f in tool_dir.glob("*.done"):
+        f.unlink()
     with pushd(tool_dir):
         check_call("make")
+    print("tools install.")
 
+    # install autolog
+    tools_extrs_dir = HERE / 'tools/extras'
+    with pushd(tools_extrs_dir):
+        check_call(f"bash -e install_autolog.sh")
+    print("autolog install.")
 
-def _post_install(install_lib_dir):
     # ctcdecoder
     ctcdecoder_dir = HERE/ 'deepspeech/decoders/ctcdecoder/swig'
-    with puahd(ctcdecoder_dir):
-        check_call("setup.sh")
+    with pushd(ctcdecoder_dir):
+        check_call("bash -e setup.sh")
+    print("ctcdecoder install.")
+
 
+def _post_install(install_lib_dir):
     # install third_party
     third_party_dir = HERE / 'third_party'
-    with puahd(third_party_dir):
-        check_call("bash install.sh")
-
-    # install autolog
-    tools_extrs_dir = HERE / 'tools/extras'
-    with puahd(tools_extrs_dir):
-        check_call("bash install_autolog.sh")
+    with pushd(third_party_dir):
+        check_call("bash -e install.sh")
+    print("third_party install.")
 
 
 class DevelopCommand(develop):
     def run(self):
-        _pre_install()
+        self.execute(_pre_install, (self.install_lib, ), msg="Pre Install...")
         develop.run(self)
         self.execute(_post_install, (self.install_lib, ), msg="Post Install...")
 
 
 class InstallCommand(install):
     def run(self):
-        _pre_install()
+        self.execute(_pre_install, (self.install_lib, ), msg="Pre Install...")
         install.run(self)
         self.execute(_post_install, (self.install_lib, ), msg="Post Install...")
 
diff --git a/tools/extras/install_autolog.sh b/tools/extras/install_autolog.sh
old mode 100644
new mode 100755
index 95d10bcedeb0b251fe79ec9a66d76449eef1d950..1000d7f6ac46616612a036ec13571b87e44a8f7c
--- a/tools/extras/install_autolog.sh
+++ b/tools/extras/install_autolog.sh
@@ -1,17 +1,16 @@
 #!/bin/bash
 
 #install auto-log
-python -c "import auto_log"
+echo "Install auto_log into default system path"
+test -d AutoLog || git clone https://github.com/LDOUBLEV/AutoLog
 if [ $? != 0 ]; then
-    info_msg "Install auto_log into default system path"
-    test -d AutoLog || git clone https://github.com/LDOUBLEV/AutoLog
-    if [ $? != 0 ]; then
-        error_msg "Download auto_log failed !!!"
-        exit 1
-    fi
-    cd AutoLog
-    pip install -r requirements.txt
-    python setup.py install
-    cd ..
-    rm -rf AutoLog
-fi
\ No newline at end of file
+    error_msg "Download auto_log failed !!!"
+    exit 1
+fi
+
+pushd AutoLog
+pip install -r requirements.txt
+python setup.py install
+popd
+
+rm -rf AutoLog