Switching to Python 3.6 by default

README.md

@@ -1,6 +1,9 @@
 Conda Environment Buildpack
 ===========================
 
+Update (Aug-21, 2017): Updated the origin conda-buildpack to use Python 3.6 by default. 
+
+
 This is the [Heroku Buildpack][] for [Conda][] using it's new
 [environment spec][].  Anything you can install with `conda install` can be
 installed using this, including the entire data science stack.  Be careful of

bin/compile

@@ -87,9 +87,9 @@ done
 
 # Set context environment variables.
 set-env PATH '$HOME/.heroku/miniconda/bin:$PATH'
-PYTHONPATH='/app/.heroku/miniconda/lib/python2.7/site-packages:$PYTHONPATH'
+PYTHONPATH='/app/.heroku/miniconda/lib/python3.6/site-packages:$PYTHONPATH'
 if [ -f environment.yml ]; then
-  PYTHONPATH="/app/.heroku/miniconda/envs/heroku-env/lib/python2.7/site-packages:${PYTHONPATH}"
+  PYTHONPATH="/app/.heroku/miniconda/envs/heroku-env/lib/python3.6/site-packages:${PYTHONPATH}"
   set-default-env CONDA_DEFAULT_ENV "heroku-env"
 fi
 set-default-env PYTHONPATH $PYTHONPATH

bin/steps/conda_compile

@@ -1,24 +1,27 @@
 #!/usr/bin/env bash
-CONDA_VERSION=3.8.3
+CONDA_VERSION=latest
 if [ ! -d /app/.heroku/miniconda ]; then
-    puts-step "Preparing Python/Miniconda Environment (${CONDA_VERSION})"
-    curl -Os http://repo.continuum.io/miniconda/Miniconda-${CONDA_VERSION}-Linux-x86_64.sh
-    bash Miniconda-${CONDA_VERSION}-Linux-x86_64.sh -p /app/.heroku/miniconda/ -b | indent
-    rm -fr Miniconda-${CONDA_VERSION}-Linux-x86_64.sh
+    puts-step "Preparing Python/Miniconda3 Environment (${CONDA_VERSION})"
+    curl -Os http://repo.continuum.io/miniconda/Miniconda3-${CONDA_VERSION}-Linux-x86_64.sh
+    bash Miniconda3-${CONDA_VERSION}-Linux-x86_64.sh -p /app/.heroku/miniconda/ -b | indent
+    rm -fr Miniconda3-${CONDA_VERSION}-Linux-x86_64.sh
 
     conda update conda --quiet --yes | indent
 fi
 
 
 if [ -f conda-requirements.txt ]; then
-    puts-step "Installing dependencies using Conda"
+    puts-step "Installing dependencies using Conda3"
     conda install --file conda-requirements.txt --yes
 fi
 
 if [ -f environment.yml ]; then
     puts-step "Creating conda environment"
-    # TODO: Use update if its already there
-    conda env remove --yes --quiet --name heroku-env
+    # Remove existing environment if it already exists
+    if conda env list | grep "heroku-env" > /dev/null
+        then 
+            conda env remove --yes --quiet --name heroku-env
+    fi
     conda env create --name=heroku-env --file environment.yml
 fi