Add python venv to setup-macos.sh and Makefile (facebookincubator#10668)

Summary:
Create python virtual environment in the Velox root directory if missing.

Resolves facebookincubator#9519

Pull Request resolved: facebookincubator#10668

Reviewed By: xiaoxmeng

Differential Revision: D61134745

Pulled By: pedroerp

fbshipit-source-id: 89679ec7fdebe79f6861872c6104d9f4290e9887

Author: majetideepak

.gitignore

@@ -48,7 +48,7 @@ autoconf/autom4te.cache
 projects/*
 !projects/*.*
 !projects/Makefile
-
+.venv
 
 #==============================================================================#
 # Autotools artifacts

Makefile

@@ -13,13 +13,15 @@
 # limitations under the License.
 .PHONY: all cmake build clean debug release unit
 
+SHELL=/bin/bash
 BUILD_BASE_DIR=_build
 BUILD_DIR=release
 BUILD_TYPE=Release
 BENCHMARKS_BASIC_DIR=$(BUILD_BASE_DIR)/$(BUILD_DIR)/velox/benchmarks/basic/
 BENCHMARKS_DUMP_DIR=dumps
 TREAT_WARNINGS_AS_ERRORS ?= 1
 ENABLE_WALL ?= 1
+PYTHON_VENV ?= .venv
 
 # Option to make a minimal build. By default set to "OFF"; set to
 # "ON" to only build a minimal set of components. This may override
@@ -169,17 +171,33 @@ fuzzertest: debug
 			--minloglevel=0
 
 format-fix: 			#: Fix formatting issues in the main branch
+ifneq ("$(wildcard ${PYTHON_VENV}/pyvenv.cfg)","")
+	source ${PYTHON_VENV}/bin/activate; scripts/check.py format main --fix
+else
 	scripts/check.py format main --fix
+endif
 
 format-check: 			#: Check for formatting issues on the main branch
 	clang-format --version
+ifneq ("$(wildcard ${PYTHON_VENV}/pyvenv.cfg)","")
+	source ${PYTHON_VENV}/bin/activate; scripts/check.py format main
+else
 	scripts/check.py format main
+endif
 
-header-fix:				#: Fix license header issues in the current branch
+header-fix:			#: Fix license header issues in the current branch
+ifneq ("$(wildcard ${PYTHON_VENV}/pyvenv.cfg)","")
+	source ${PYTHON_VENV}/bin/activate; scripts/check.py header main --fix
+else
 	scripts/check.py header main --fix
+endif
 
 header-check:			#: Check for license header issues on the main branch
+ifneq ("$(wildcard ${PYTHON_VENV}/pyvenv.cfg)","")
+	source ${PYTHON_VENV}/bin/activate; scripts/check.py header main
+else
 	scripts/check.py header main
+endif
 
 circleci-container:			#: Build the linux container for CircleCi
 	$(MAKE) linux-container CONTAINER_NAME=circleci

scripts/setup-macos.sh

@@ -30,6 +30,7 @@ set -x # Print commands that are executed.
 
 SCRIPTDIR=$(dirname "${BASH_SOURCE[0]}")
 source $SCRIPTDIR/setup-helper-functions.sh
+PYTHON_VENV=${PYHTON_VENV:-"${SCRIPTDIR}/../.venv"}
 
 NPROC=$(getconf _NPROCESSORS_ONLN)
 
@@ -71,7 +72,11 @@ function install_build_prerequisites {
   do
     install_from_brew ${pkg}
   done
-  pip3 install --user cmake-format regex pyyaml
+  if [ ! -f ${PYTHON_VENV}/pyvenv.cfg ]; then
+    echo "Creating Python Virtual Environment at ${PYTHON_VENV}"
+    python3 -m venv ${PYTHON_VENV}
+  fi
+  source ${PYTHON_VENV}/bin/activate; pip3 install cmake-format regex pyyaml
 }
 
 function install_velox_deps_from_brew {