From 86a9f4c16d5d4d50c2f5e3cd30b5aecf171e085c Mon Sep 17 00:00:00 2001
From: Saksham <sakshamdev5@gmail.com>
Date: Wed, 3 Jun 2020 15:50:11 +0530
Subject: [PATCH 1/3] added checks for python, bazel & pipenv

---
 prereqs_mac.sh | 35 +++++++++++++++++++++++++----------
 1 file changed, 25 insertions(+), 10 deletions(-)

diff --git a/prereqs_mac.sh b/prereqs_mac.sh
index d2d0ce5d..5b3cb262 100755
--- a/prereqs_mac.sh
+++ b/prereqs_mac.sh
@@ -1,5 +1,6 @@
 #!/bin/bash
 
+# homebrew
 which -s brew
 if [[ $? != 0 ]] ; then
     # Install Homebrew
@@ -9,18 +10,32 @@ else
     brew update
 fi
 
-# TODO: We want to check if user has python already installed.
-# In-case if they have some other version of python installed, 
-# this will create yet another installation.
-
-# echo "Downloading and installing Python3 using homebrew"
-# brew install python3
+# python 3
+echo "Checking for python3 installation"
+if command -v python3 &>/dev/null; then
+    echo "Python 3 already installed"
+else
+    echo "Downloading and installing Python3 using homebrew"
+    brew install python3
+fi
 
-# checking for bazel
-echo "Downloading and installing Bazel using homebrew"
-brew tap bazelbuild/tap
-brew install bazelbuild/tap/bazel
+# bazel
+if command -v bazel &>/dev/null; then
+    echo "Bazel already installed"
+else
+    echo "Downloading and installing Bazel using homebrew"
+    brew tap bazelbuild/tap
+    brew install bazelbuild/tap/bazel
+fi
 
+# pipenv
+echo "Checking for pipenv"
+if python3 -c "import pipenv" &> /dev/null; then
+    echo "pipenv is already installed"
+else
+    echo "installing pipenv"
+    pip3 install pipenv
+fi
 
 # Downloading the Google DP library
 git submodule update --init --recursive

From bac661be155bcaea6fe0928a42ede526fddd11f1 Mon Sep 17 00:00:00 2001
From: Saksham <sakshamdev5@gmail.com>
Date: Thu, 11 Jun 2020 01:53:03 +0530
Subject: [PATCH 2/3] install bazel using binary installer

---
 prereqs_mac.sh | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/prereqs_mac.sh b/prereqs_mac.sh
index 5b3cb262..4b25f2ba 100755
--- a/prereqs_mac.sh
+++ b/prereqs_mac.sh
@@ -23,9 +23,12 @@ fi
 if command -v bazel &>/dev/null; then
     echo "Bazel already installed"
 else
-    echo "Downloading and installing Bazel using homebrew"
-    brew tap bazelbuild/tap
-    brew install bazelbuild/tap/bazel
+    echo "Donwloading Bazel 3.2.0"
+    curl -LO https://github.com/bazelbuild/bazel/releases/download/3.2.0/bazel-3.2.0-installer-darwin-x86_64.sh
+    chmod +x bazel-3.2.0-installer-darwin-x86_64.sh
+    ./bazel-3.2.0-installer-darwin-x86_64.sh
+    export PATH="$PATH:$HOME/bin"
+    rm bazel-3.2.0-installer-darwin-x86_64.sh
 fi
 
 # pipenv

From 0b0fda89a83f0dc36687414ade4ed10f2957781a Mon Sep 17 00:00:00 2001
From: Saksham <sakshamdev5@gmail.com>
Date: Thu, 11 Jun 2020 04:04:19 +0530
Subject: [PATCH 3/3] switched back

---
 prereqs_mac.sh | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/prereqs_mac.sh b/prereqs_mac.sh
index 4b25f2ba..5b3cb262 100755
--- a/prereqs_mac.sh
+++ b/prereqs_mac.sh
@@ -23,12 +23,9 @@ fi
 if command -v bazel &>/dev/null; then
     echo "Bazel already installed"
 else
-    echo "Donwloading Bazel 3.2.0"
-    curl -LO https://github.com/bazelbuild/bazel/releases/download/3.2.0/bazel-3.2.0-installer-darwin-x86_64.sh
-    chmod +x bazel-3.2.0-installer-darwin-x86_64.sh
-    ./bazel-3.2.0-installer-darwin-x86_64.sh
-    export PATH="$PATH:$HOME/bin"
-    rm bazel-3.2.0-installer-darwin-x86_64.sh
+    echo "Downloading and installing Bazel using homebrew"
+    brew tap bazelbuild/tap
+    brew install bazelbuild/tap/bazel
 fi
 
 # pipenv