updated changelog

2026-06-05 23:10:16 +00:00 · 2017-05-30 11:12:40 -04:00
46 changed files with 228 additions and 486 deletions
@@ -1,5 +1,3 @@
 *.pyc
 site
 .DS_Store
-
-/.envrc
@@ -1,23 +1,9 @@
 language: bash
-dist: trusty
-jobs:
-  include:
-    - stage: "Bash linting (shellcheck)"
-      sudo: false
-      addons:
-        apt:
-          sources:
-          - debian-sid    # Grab shellcheck from the Debian repo (o_O)
-          packages:
-          - shellcheck
-      script: make check
-
-    - stage: "Stack Tests"
-      services: docker
-      env: STACK=heroku-16
-      script: ./tests.sh
-
-    - stage: "Stack Tests"
-      services: docker
-      env: STACK=cedar-14
-      script: ./tests.sh
+sudo: required
+services:
+  - docker
+# install: docker pull heroku/cedar:14
+script: ./tests.sh
+env:
+  - STACK=heroku-16
+  - STACK=cedar-14
@@ -1,55 +1,5 @@
 # Python Buildpack Changelog

-# 114
-
- Bugfixes.
-
-Blacklisting `PYTHONHOME` and `PYTHONPATH` for older apps. Upgrades to nltk support.
-
-# 113
-
- Updates to Pipenv support.
-
-# 112
-
-Bugfix.
-
- Fixed grep output bug.
-
-# 111
-
-Linting, bugfixes.
-
-# 110
-
-Update Default Python to 3.6.1, bugfixes.
-
- Fixed automatic pip uninstall of dependencies removed from requirements.txt.
-
-# 109
-
-Fix output for collectstatic step.
-
-# 108
-
-Updated setuptools.
-
-# 107
-
-Bugfix for C dependency installation.
-
-# 106
-
- Don't install packages that could mess up packaging.
-
- - The Python buildpack will automatically remove `six`, `pyparsing`, `appdirs`,
-   `setuptools`, and `distribute` from a `requirements.txt` file now, as these
-   packages are provided by the Python buildpack.
-
- # 105
-
- Improvements to output messaging.
-
 # 104

 General improvements.
@@ -1,6 +1,6 @@
 MIT License:

-Copyright (C) 2017 Heroku, Inc.
+Copyright (C) 2016 Heroku, Inc.

 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

@@ -1,12 +1,7 @@
 # These targets are not files
 .PHONY: tests

-test: test-heroku-16
-
-check:
-	@shellcheck -x bin/compile bin/detect bin/release bin/test-compile bin/utils bin/warnings
-	@shellcheck -x bin/steps/collectstatic bin/steps/cryptography bin/steps/eggpath-fix  bin/steps/eggpath-fix2 bin/steps/gdal bin/steps/geo-libs bin/steps/mercurial bin/steps/nltk bin/steps/pip-install bin/steps/pip-uninstall bin/steps/pipenv bin/steps/pipenv-python-version bin/steps/pylibmc bin/steps/python
-	@shellcheck -x bin/steps/hooks/*
+test: test-cedar-14

 test-cedar-14:
 	@echo "Running tests in docker (cedar-14)..."
@@ -4,11 +4,11 @@

 [![Build Status](https://travis-ci.org/heroku/heroku-buildpack-python.svg?branch=master)](https://travis-ci.org/heroku/heroku-buildpack-python)

-This is the official [Heroku buildpack](https://devcenter.heroku.com/articles/buildpacks) for Python apps, powered by [Pipenv](http://docs.pipenv.org/en/latest/), [pip](https://pip.pypa.io/) and other excellent software.
+This is the official [Heroku buildpack](https://devcenter.heroku.com/articles/buildpacks) for Python apps, powered by [pip](https://pip.pypa.io/) and other excellent software.

 Recommended web frameworks include **Django** and **Flask**. The recommended webserver is **Gunicorn**. There are no restrictions around what software can be used (as long as it's pip-installable). Web processes must bind to `$PORT`, and only the HTTP protocol is permitted for incoming connections.

-Some Python packages with obscure C dependencies are [not compatible](https://devcenter.heroku.com/articles/python-c-deps).
+Some Python packages with obscure C dependencies (e.g. scipy) are [not compatible](https://devcenter.heroku.com/articles/python-c-deps).

 See it in Action
 ----------------
@@ -16,22 +16,24 @@ See it in Action
 Deploying a Python application couldn't be easier:

    $ ls
-    Pipfile		Procfile	web.py
+    Procfile  requirements.txt  web.py

    $ heroku create --buildpack heroku/python

    $ git push heroku master
    ...
    -----> Python app detected
-    -----> Installing python-3.6.2
-    -----> Installing pip
-    -----> Installing requirements with latest pipenv...
-           ...
-           Installing dependencies from Pipfile...
+    -----> Installing python-2.7.13
+         $ pip install -r requirements.txt
+           Collecting requests (from -r requirements.txt (line 1))
+             Downloading requests-2.12.4-py2.py3-none-any.whl (576KB)
+           Installing collected packages: requests
+           Successfully installed requests-2.12.4
+
    -----> Discovering process types
           Procfile declares types -> (none)

-A `Pipfile` or `requirements.txt` must be present at the root of your application's repository.
+A `requirements.txt` file must be present at the root of your application's repository.

 You can also specify the latest production release of this buildpack for upcoming builds of an existing application:

@@ -44,11 +46,11 @@ Specify a Python Runtime
 Specific versions of the Python runtime can be specified with a `runtime.txt` file:

    $ cat runtime.txt
-    python-2.7.13
+    python-3.6.1

 Runtime options include:

- `python-3.6.2`
 - `python-2.7.13`
+- `python-3.6.1`
 - `pypy-5.7.1` (unsupported, experimental)
 - `pypy3-5.5.1` (unsupported, experimental)
@@ -25,24 +25,21 @@ export BUILDPACK_LOG_FILE=${BUILDPACK_LOG_FILE:-/dev/null}
 export PATH=:/usr/local/bin:$PATH

 # Paths.
-BIN_DIR=$(cd "$(dirname "$0")"; pwd) # absolute path
-ROOT_DIR=$(dirname "$BIN_DIR")
+BIN_DIR=$(cd $(dirname $0); pwd) # absolute path
+ROOT_DIR=$(dirname $BIN_DIR)
 BUILD_DIR=$1
 CACHE_DIR=$2
 ENV_DIR=$3

-export BUILD_DIR CACHE_DIR ENV_DIR
-
 # Python defaults
-DEFAULT_PYTHON_VERSION="python-3.6.2"
+DEFAULT_PYTHON_VERSION="python-2.7.13"
 DEFAULT_PYTHON_STACK="cedar-14"
-PIP_UPDATE="9.0.1"
-
-export DEFAULT_PYTHON_VERSION DEFAULT_PYTHON_STACK PIP_UPDATE
+PYTHON_EXE="/app/.heroku/python/bin/python"
+PIP_VERSION="9.0.1"
+SETUPTOOLS_VERSION="32.1.0"

 # Common Problem Warnings
-WARNINGS_LOG=$(mktemp)
-export WARNINGS_LOG
+export WARNINGS_LOG=$(mktemp)
 export RECOMMENDED_PYTHON_VERSION=$DEFAULT_PYTHON_VERSION

 # Setup vendored tools and pip-pop (pip-diff)
@@ -59,12 +56,10 @@ unset RECEIVE_DATA RUN_KEY BUILD_INFO DEPLOY LOG_TOKEN
 unset CYTOKINE_LOG_FILE GEM_PATH

 # Syntax sugar.
-# shellcheck source=bin/utils
-source "$BIN_DIR/utils"
+source $BIN_DIR/utils

 # Import collection of warnings.
-# shellcheck source=bin/warnings
-source "$BIN_DIR/warnings"
+source $BIN_DIR/warnings

 # we need to put a bunch of symlinks in there later
 mkdir -p /app/.heroku
@@ -89,7 +84,7 @@ export LD_LIBRARY_PATH=/app/.heroku/vendor/lib:/app/.heroku/python/lib:$LD_LIBRA
 export PKG_CONFIG_PATH=/app/.heroku/vendor/lib/pkg-config:/app/.heroku/python/lib/pkg-config:$PKG_CONFIG_PATH

 # Switch to the repo's context.
-cd "$BUILD_DIR"
+cd $BUILD_DIR

 # Warn for lack of Procfile.
 if [[ ! -f Procfile ]]; then
@@ -98,66 +93,65 @@ if [[ ! -f Procfile ]]; then
 fi

 # Prepare the cache.
-mkdir -p "$CACHE_DIR"
+mkdir -p $CACHE_DIR

 # Restore old artifacts from the cache.
 mkdir -p .heroku

-cp -R "$CACHE_DIR/.heroku/python" .heroku/ &> /dev/null || true
-cp -R "$CACHE_DIR/.heroku/python-stack" .heroku/ &> /dev/null || true
-cp -R "$CACHE_DIR/.heroku/python-version" .heroku/ &> /dev/null || true
-cp -R "$CACHE_DIR/.heroku/vendor" .heroku/ &> /dev/null || true
-if [[ -d "$CACHE_DIR/.heroku/src" ]]; then
-  cp -R "$CACHE_DIR/.heroku/src" .heroku/ &> /dev/null || true
+cp -R $CACHE_DIR/.heroku/python .heroku/ &> /dev/null || true
+cp -R $CACHE_DIR/.heroku/python-stack .heroku/ &> /dev/null || true
+cp -R $CACHE_DIR/.heroku/python-version .heroku/ &> /dev/null || true
+cp -R $CACHE_DIR/.heroku/vendor .heroku/ &> /dev/null || true
+if [[ -d $CACHE_DIR/.heroku/src ]]; then
+  cp -R $CACHE_DIR/.heroku/src .heroku/ &> /dev/null || true
 fi

 # Experimental pre_compile hook.
-# shellcheck source=bin/steps/hooks/pre_compile
-source "$BIN_DIR/steps/hooks/pre_compile"
+source $BIN_DIR/steps/hooks/pre_compile

 # Sticky runtimes.
-if [ -f "$CACHE_DIR/.heroku/python-version" ]; then
-  DEFAULT_PYTHON_VERSION=$(cat "$CACHE_DIR/.heroku/python-version")
+if [ -f $CACHE_DIR/.heroku/python-version ]; then
+  DEFAULT_PYTHON_VERSION=$(cat $CACHE_DIR/.heroku/python-version)
 fi

 # Stack fallback for non-declared caches.
-if [ -f "$CACHE_DIR/.heroku/python-stack" ]; then
-  CACHED_PYTHON_STACK=$(cat "$CACHE_DIR/.heroku/python-stack")
+if [ -f $CACHE_DIR/.heroku/python-stack ]; then
+  CACHED_PYTHON_STACK=$(cat $CACHE_DIR/.heroku/python-stack)
 else
  CACHED_PYTHON_STACK=$STACK
 fi

-export CACHED_PYTHON_STACK
-
 # Pipenv Python version support.
-# shellcheck source=bin/steps/pipenv-python-version
-source "$BIN_DIR/steps/pipenv-python-version"
+source $BIN_DIR/steps/pipenv-python-version

 # If no runtime given, assume default version.
 if [ ! -f runtime.txt ]; then
-  echo "$DEFAULT_PYTHON_VERSION" > runtime.txt
+  echo $DEFAULT_PYTHON_VERSION > runtime.txt
 fi

-mkdir -p "$(dirname "$PROFILE_PATH")"
+mkdir -p $(dirname $PROFILE_PATH)
 mkdir -p /app/.heroku/src

 if [[ $BUILD_DIR != '/app' ]]; then
    # python expects to reside in /app, so set up symlinks
    # we will not remove these later so subsequent buildpacks can still invoke it
-    ln -nsf "$BUILD_DIR/.heroku/python" /app/.heroku/python
-    ln -nsf "$BUILD_DIR/.heroku/vendor" /app/.heroku/vendor
+    ln -nsf $BUILD_DIR/.heroku/python /app/.heroku/python
+    ln -nsf $BUILD_DIR/.heroku/vendor /app/.heroku/vendor
    # Note: .heroku/src is copied in later.
 fi

 # Install Python.
 let start=$(nowms)
-# shellcheck source=bin/steps/python
-source "$BIN_DIR/steps/python"
+source $BIN_DIR/steps/python
 mtime "python.install.time" "${start}"

+# Sanity check for setuptools/distribute.
+let start=$(nowms)
+source $BIN_DIR/steps/setuptools
+mtime "setuptools.install.time" "${start}"
+
 # Pipenv support.
-# shellcheck source=bin/steps/pipenv
-source "$BIN_DIR/steps/pipenv"
+source $BIN_DIR/steps/pipenv

 # If no requirements.txt file given, assume `setup.py develop` is intended.
 if [ ! -f requirements.txt ] && [ ! -f Pipfile ]; then
@@ -165,101 +159,88 @@ if [ ! -f requirements.txt ] && [ ! -f Pipfile ]; then
 fi

 # Fix egg-links.
-# shellcheck source=bin/steps/eggpath-fix
-source "$BIN_DIR/steps/eggpath-fix"
+source $BIN_DIR/steps/eggpath-fix

 # Mercurial support.
-# shellcheck source=bin/steps/mercurial
-source "$BIN_DIR/steps/mercurial"
+source $BIN_DIR/steps/mercurial

 # Pylibmc support.
-# shellcheck source=bin/steps/pylibmc
-source "$BIN_DIR/steps/pylibmc"
+source $BIN_DIR/steps/pylibmc

 # Libffi support.
-# shellcheck source=bin/steps/cryptography
-source "$BIN_DIR/steps/cryptography"
+source $BIN_DIR/steps/cryptography

 # Support for Geo libraries.
-# shellcheck source=bin/steps/geo-libs
-sub_env "$BIN_DIR/steps/geo-libs"
+sub-env $BIN_DIR/steps/geo-libs

 # GDAL support.
-# shellcheck source=bin/steps/gdal
-source "$BIN_DIR/steps/gdal"
-
-# Uninstall removed dependencies with Pip.
-let start=$(nowms)
-# shellcheck source=bin/steps/pip-uninstall
-source "$BIN_DIR/steps/pip-uninstall"
-mtime "pip.uninstall.time" "${start}"
+source $BIN_DIR/steps/gdal

 # Install dependencies with Pip (where the magic happens).
 let start=$(nowms)
-# shellcheck source=bin/steps/pip-install
-source "$BIN_DIR/steps/pip-install"
+source $BIN_DIR/steps/pip-install
 mtime "pip.install.time" "${start}"

+# Uninstall removed dependencies with Pip.
+let start=$(nowms)
+source $BIN_DIR/steps/pip-uninstall
+mtime "pip.uninstall.time" "${start}"
+
 # Support for NLTK corpora.
 let start=$(nowms)
-sub_env "$BIN_DIR/steps/nltk"
+sub-env $BIN_DIR/steps/nltk
 mtime "nltk.download.time" "${start}"

 # Support for pip install -e.
 # In CI, $BUILD_DIR is /app.
 if [[ ! "$BUILD_DIR" == "/app" ]]; then
-  rm -fr "$BUILD_DIR/.heroku/src"
-  deep-cp /app/.heroku/src "$BUILD_DIR/.heroku/src"
+  rm -fr $BUILD_DIR/.heroku/src
+  deep-cp /app/.heroku/src $BUILD_DIR/.heroku/src
 fi


 # Django collectstatic support.
 let start=$(nowms)
-sub_env "$BIN_DIR/steps/collectstatic"
+sub-env $BIN_DIR/steps/collectstatic
 mtime "collectstatic.time" "${start}"

 # Create .profile script for application runtime environment variables.
-set_env PATH "\$HOME/.heroku/python/bin:\$PATH"
-set_env PYTHONUNBUFFERED true
-set_env PYTHONHOME /app/.heroku/python
-
-set_env LIBRARY_PATH "/app/.heroku/vendor/lib:/app/.heroku/python/lib:\$LIBRARY_PATH"
-set_env LD_LIBRARY_PATH "/app/.heroku/vendor/lib:/app/.heroku/python/lib:\$LD_LIBRARY_PATH"
-
-set_default_env LANG en_US.UTF-8
-set_default_env PYTHONHASHSEED random
-set_default_env PYTHONPATH /app/
+set-env PATH '$HOME/.heroku/python/bin:$PATH'
+set-env PYTHONUNBUFFERED true
+set-env PYTHONHOME /app/.heroku/python
+set-env LIBRARY_PATH '/app/.heroku/vendor/lib:/app/.heroku/python/lib:$LIBRARY_PATH'
+set-env LD_LIBRARY_PATH '/app/.heroku/vendor/lib:/app/.heroku/python/lib:$LD_LIBRARY_PATH'
+set-default-env LANG en_US.UTF-8
+set-default-env PYTHONHASHSEED random
+set-default-env PYTHONPATH /app/

 # Install sane-default script for $WEB_CONCURRENCY and $FORWARDED_ALLOW_IPS.
-cp "$ROOT_DIR/vendor/WEB_CONCURRENCY.sh" "$WEB_CONCURRENCY_PROFILE_PATH"
-cp "$ROOT_DIR/vendor/python.gunicorn.sh" "$GUNICORN_PROFILE_PATH"
+cp $ROOT_DIR/vendor/WEB_CONCURRENCY.sh $WEB_CONCURRENCY_PROFILE_PATH
+cp $ROOT_DIR/vendor/python.gunicorn.sh $GUNICORN_PROFILE_PATH


 # Experimental post_compile hook.
-# shellcheck source=bin/steps/hooks/post_compile
-source "$BIN_DIR/steps/hooks/post_compile"
+source $BIN_DIR/steps/hooks/post_compile

 # Fix egg-links, again.
-# shellcheck source=bin/steps/eggpath-fix2
-source "$BIN_DIR/steps/eggpath-fix2"
+source $BIN_DIR/steps/eggpath-fix2

 # Store new artifacts in cache.

-rm -rf "$CACHE_DIR/.heroku/python"
-rm -rf "$CACHE_DIR/.heroku/python-version"
-rm -rf "$CACHE_DIR/.heroku/python-stack"
-rm -rf "$CACHE_DIR/.heroku/vendor"
-rm -rf "$CACHE_DIR/.heroku/src"
+rm -rf $CACHE_DIR/.heroku/python
+rm -rf $CACHE_DIR/.heroku/python-version
+rm -rf $CACHE_DIR/.heroku/python-stack
+rm -rf $CACHE_DIR/.heroku/vendor
+rm -rf $CACHE_DIR/.heroku/src

-mkdir -p "$CACHE_DIR/.heroku"
-cp -R .heroku/python "$CACHE_DIR/.heroku/"
-cp -R .heroku/python-version "$CACHE_DIR/.heroku/"
-cp -R .heroku/python-stack "$CACHE_DIR/.heroku/" &> /dev/null || true
-cp -R .heroku/vendor "$CACHE_DIR/.heroku/" &> /dev/null || true
+mkdir -p $CACHE_DIR/.heroku
+cp -R .heroku/python $CACHE_DIR/.heroku/
+cp -R .heroku/python-version $CACHE_DIR/.heroku/
+cp -R .heroku/python-stack $CACHE_DIR/.heroku/ &> /dev/null || true
+cp -R .heroku/vendor $CACHE_DIR/.heroku/ &> /dev/null || true
 if [[ -d .heroku/src ]]; then
-  cp -R .heroku/src "$CACHE_DIR/.heroku/" &> /dev/null || true
+  cp -R .heroku/src $CACHE_DIR/.heroku/ &> /dev/null || true
 fi

 # Measure the size of the Python installation.
-# shellcheck disable=SC2119
 mmeasure 'python.size' "$(measure-size)"
@@ -15,7 +15,7 @@
 BUILD_DIR=$1

 # Exit early if app is clearly not Python.
-if [ ! -f "$BUILD_DIR/requirements.txt" ] && [ ! -f "$BUILD_DIR/setup.py" ] && [ ! -f "$BUILD_DIR/Pipfile" ]; then
+if [ ! -f $BUILD_DIR/requirements.txt ] && [ ! -f $BUILD_DIR/setup.py ] && [ ! -f $BUILD_DIR/Pipfile ]; then
  exit 1
 fi

@@ -1,9 +1,10 @@
 #!/usr/bin/env bash
 # bin/release <build-dir>

+BIN_DIR=$(cd $(dirname $0); pwd) # absolute path
 BUILD_DIR=$1

-MANAGE_FILE=$(cd "$BUILD_DIR" && find . -maxdepth 3 -type f -name 'manage.py' | head -1)
+MANAGE_FILE=$(cd $BUILD_DIR && find . -maxdepth 3 -type f -name 'manage.py' | head -1)
 MANAGE_FILE=${MANAGE_FILE:2}

 cat <<EOF
@@ -10,7 +10,6 @@
 #   - $DISABLE_COLLECTSTATIC: disables this functionality.
 #   - $DEBUG_COLLECTSTATIC: upon failure, print out environment variables.

-# shellcheck source=bin/utils
 source $BIN_DIR/utils

 # Location of 'manage.py', if it exists.
@@ -21,7 +20,7 @@ MANAGE_FILE=${MANAGE_FILE:-fakepath}
 [ -f .heroku/collectstatic_disabled ] && DISABLE_COLLECTSTATIC=1

 # Ensure that Django is explicitly specified in requirements.txt
-sp-grep -s django && DJANGO_INSTALLED=1
+pip-grep -s Django && DJANGO_INSTALLED=1


 if [ ! "$DISABLE_COLLECTSTATIC" ] && [ -f "$MANAGE_FILE" ] && [ "$DJANGO_INSTALLED" ]; then
@@ -30,13 +29,13 @@ if [ ! "$DISABLE_COLLECTSTATIC" ] && [ -f "$MANAGE_FILE" ] && [ "$DJANGO_INSTALL
    puts-step "$ python $MANAGE_FILE collectstatic --noinput"

    # Run collectstatic, cleanup some of the noisy output.
-    python "$MANAGE_FILE" collectstatic --noinput --traceback 2>&1 | sed '/^Post-processed/d;/^Copying/d;/^$/d' | indent
+    python $MANAGE_FILE collectstatic --noinput --traceback 2>&1 | sed '/^Post-processed/d;/^Copying/d;/^$/d' | indent
    COLLECTSTATIC_STATUS="${PIPESTATUS[0]}"

    set -e

    # Display a warning if collectstatic failed.
-    [ "$COLLECTSTATIC_STATUS" -ne 0 ] && {
+    [ $COLLECTSTATIC_STATUS -ne 0 ] && {

        echo
        echo " !     Error while running '$ python $MANAGE_FILE collectstatic --noinput'."
@@ -15,19 +15,17 @@ VENDORED_LIBFFI="https://lang-python.s3.amazonaws.com/$STACK/libraries/vendor/li
 PKG_CONFIG_PATH="/app/.heroku/vendor/lib/pkgconfig:$PKG_CONFIG_PATH"

 # Syntax sugar.
-# shellcheck source=bin/utils
-source "$BIN_DIR/utils"
+source $BIN_DIR/utils

 # If a package using cffi exists within requirements, use vendored libffi.
-if (pip-grep -s requirements.txt argon2-cffi bcrypt cffi cryptography django[argon2] Django[argon2] django[bcrypt] Django[bcrypt] PyNaCl pyOpenSSL PyOpenSSL requests[security] misaka &> /dev/null) then
+if (pip-grep -s argon2-cffi bcrypt cffi cryptography PyNaCl pyOpenSSL PyOpenSSL misaka &> /dev/null) then

  if [ ! -d ".heroku/vendor/lib/libffi-3.1" ]; then
    echo "-----> Noticed cffi. Bootstrapping libffi."
    mkdir -p .heroku/vendor
    # Download and extract libffi into target vendor directory.
-    curl "$VENDORED_LIBFFI" -s | tar zxv -C .heroku/vendor &> /dev/null
+    curl $VENDORED_LIBFFI -s | tar zxv -C .heroku/vendor &> /dev/null
  fi

-  LIBFFI=$(pwd)/vendor
-  export LIBFFI
+  export LIBFFI=$(pwd)/vendor
 fi
@@ -1,5 +1,3 @@
-#!/usr/bin/env bash
-
 set +e
 # delete any existing egg links, to uninstall exisisting installations.
 find .heroku/python/lib/python*/site-packages/ -name "*.egg-link" -delete 2> /dev/null
@@ -1,4 +1,3 @@
-#!/usr/bin/env bash
 set +e
 # rewrite build dir in egg links to /app so things are found at runtime
 find .heroku/python/lib/python*/site-packages/ -name "*.pth" -print0 2> /dev/null | xargs -r -0 -n 1 sed -i -e "s#$(pwd)#/app#" &> /dev/null
@@ -15,20 +15,18 @@ VENDORED_GDAL="https://lang-python.s3.amazonaws.com/$STACK/libraries/vendor/gdal
 PKG_CONFIG_PATH="/app/.heroku/vendor/lib/pkgconfig:$PKG_CONFIG_PATH"

 # Syntax sugar.
-# shellcheck source=bin/utils
-source "$BIN_DIR/utils"
+source $BIN_DIR/utils

 # If GDAL exists within requirements, use vendored gdal.
-if (pip-grep -s requirements.txt GDAL gdal pygdal &> /dev/null) then
+if (pip-grep -s GDAL pygdal &> /dev/null) then

  if [ ! -f ".heroku/vendor/bin/gdalserver" ]; then
    echo "-----> Noticed GDAL. Bootstrapping gdal."
    mkdir -p .heroku/vendor
    # Download and extract cryptography into target vendor directory.
-    curl "$VENDORED_GDAL" -s | tar zxv -C .heroku/vendor &> /dev/null
+    curl $VENDORED_GDAL -s | tar zxv -C .heroku/vendor &> /dev/null
  fi

-  GDAL=$(pwd)/vendor
-  export GDAL
+  export GDAL=$(pwd)/vendor
 fi

@@ -17,8 +17,7 @@ VENDORED_PROJ="https://lang-python.s3.amazonaws.com/$STACK/libraries/vendor/proj
 PKG_CONFIG_PATH="/app/.heroku/vendor/lib/pkgconfig:$PKG_CONFIG_PATH"

 # Syntax sugar.
-# shellcheck source=bin/utils
-source "$BIN_DIR/utils"
+source $BIN_DIR/utils

 # If GDAL exists within requirements, use vendored gdal.
 if [[ "$BUILD_WITH_GEO_LIBRARIES" ]]; then
@@ -27,12 +26,11 @@ if [[ "$BUILD_WITH_GEO_LIBRARIES" ]]; then
    echo "-----> Bootstrapping gdal, geos, proj."
    mkdir -p .heroku/vendor
    # Download and extract cryptography into target vendor directory.
-    curl "$VENDORED_GDAL" -s | tar zxv -C .heroku/vendor &> /dev/null
-    curl "$VENDORED_GEOS" -s | tar zxv -C .heroku/vendor &> /dev/null
-    curl "$VENDORED_PROJ" -s | tar zxv -C .heroku/vendor &> /dev/null
+    curl $VENDORED_GDAL -s | tar zxv -C .heroku/vendor &> /dev/null
+    curl $VENDORED_GEOS -s | tar zxv -C .heroku/vendor &> /dev/null
+    curl $VENDORED_PROJ -s | tar zxv -C .heroku/vendor &> /dev/null
  fi

-  GDAL=$(pwd)/vendor
-  export GDAL
+  export GDAL=$(pwd)/vendor
 fi

@@ -3,5 +3,5 @@
 if [ -f bin/post_compile ]; then
    echo "-----> Running post-compile hook"
    chmod +x bin/post_compile
-    sub_env bin/post_compile
+    sub-env bin/post_compile
 fi
@@ -3,5 +3,5 @@
 if [ -f bin/pre_compile ]; then
    echo "-----> Running pre-compile hook"
    chmod +x bin/pre_compile
-    sub_env bin/pre_compile
+    sub-env bin/pre_compile
 fi
@@ -1,5 +1,3 @@
-#!/usr/bin/env bash
-
 # Install Mercurial if it appears to be required.
 if (grep -Fiq "hg+" requirements.txt) then
    /app/.heroku/python/bin/pip install  mercurial | cleanup | indent
@@ -10,25 +10,21 @@
 # This script is invoked by [`bin/compile`](/).

 # Syntax sugar.
-# shellcheck source=bin/utils
-source "$BIN_DIR/utils"
+source $BIN_DIR/utils

 # Check that nltk was installed by pip, otherwise obviously not needed
-if sp-grep -s nltk; then
+python -m nltk.downloader -h >/dev/null 2>&1
+if [ $? -eq 0 ]; then
    puts-step "Downloading NLTK corpora..."
-
    nltk_packages_definition="$BUILD_DIR/nltk.txt"
-
    if [ -f "$nltk_packages_definition" ]; then
-
-        readarray -t nltk_packages < "$nltk_packages_definition"
-        puts-step "Downloading NLTK packages: ${nltk_packages[*]}"
-
-        python -m nltk.downloader -d "$BUILD_DIR/.heroku/python/nltk_data" "${nltk_packages[@]}" | indent
-        set_env NLTK_DATA "/app/.heroku/python/nltk_data"
-
+        nltk_packages=$(tr "\n" " " < "$nltk_packages_definition")
+        puts-step "Downloading NLTK packages: $nltk_packages"
+        python -m nltk.downloader -d $BUILD_DIR/.heroku/python/nltk_data $nltk_packages  | indent
+        set-env NLTK_DATA "/app/.heroku/python/nltk_data"
    else
        puts-warn "'nltk.txt' not found, not downloading any corpora"
        puts-warn "Learn more: https://devcenter.heroku.com/articles/python-nltk"
    fi
 fi
+
@@ -1,15 +1,10 @@
-#!/usr/bin/env bash
-
 if [ ! "$SKIP_PIP_INSTALL" ]; then

    # Install dependencies with Pip.
    puts-step "Installing requirements with pip"

    set +e
-    BLACKLIST='PYTHONHOME|PYTHONPATH'
-    export BLACKLIST
-
-    sub_env /app/.heroku/python/bin/pip install -r "$BUILD_DIR/requirements.txt" --exists-action=w --src=/app/.heroku/src --disable-pip-version-check --no-cache-dir 2>&1 | tee "$WARNINGS_LOG" | cleanup | indent
+    /app/.heroku/python/bin/pip install -r $BUILD_DIR/requirements.txt --exists-action=w --src=/app/.heroku/src --disable-pip-version-check --no-cache-dir 2>&1 | tee $WARNINGS_LOG | cleanup | indent
    PIP_STATUS="${PIPESTATUS[0]}"
    set -e

@@ -25,4 +20,4 @@ if [ ! "$SKIP_PIP_INSTALL" ]; then
    /app/.heroku/python/bin/pip freeze --disable-pip-version-check > .heroku/python/requirements-installed.txt

    echo
-fi
+fi
@@ -1,5 +1,3 @@
-#!/usr/bin/env bash
-
 set +e
 # Install dependencies with Pip.

@@ -1,5 +1,3 @@
-#!/usr/bin/env bash
-
 # Pipenv support (Generate requriements.txt with pipenv).
 if [[ -f Pipfile ]]; then
    if [[ ! -f requirements.txt ]]; then
@@ -9,7 +7,7 @@ if [[ -f Pipfile ]]; then
        /app/.heroku/python/bin/pip install pipenv --upgrade &> /dev/null

        # Install the dependencies.
-        /app/.heroku/python/bin/pipenv install --system --skip-lock 2>&1 | indent
+        /app/.heroku/python/bin/pipenv install --system 2>&1 | indent

        # Skip pip install, later.
        export SKIP_PIP_INSTALL=1
@@ -18,4 +16,4 @@ if [[ -f Pipfile ]]; then
        /app/.heroku/python/bin/pip freeze > requirements.txt

    fi
-fi
+fi
@@ -1,8 +1,6 @@
-#!/usr/bin/env bash
-
 # Detect Python-version with Pipenv.

-if [[ -f $BUILD_DIR/Pipfile ]]; then
+if [[ -f $BUILD_DIR/Pipfile.lock ]]; then

    if [[ ! -f $BUILD_DIR/runtime.txt ]]; then
        if [[ ! -f $BUILD_DIR/Pipfile.lock ]]; then
@@ -10,14 +8,14 @@ if [[ -f $BUILD_DIR/Pipfile ]]; then
        fi
        if [[ -f $BUILD_DIR/Pipfile.lock ]]; then
            set +e
-            PYTHON=$(jq -r '._meta.requires.python_version' "$BUILD_DIR/Pipfile.lock")
+            PYTHON=$(cat $BUILD_DIR/Pipfile.lock | jq '._meta.requires.python_version' -r)
            set -e

            if [ "$PYTHON" = 2.7 ]; then
-                echo "python-2.7.13" > "$BUILD_DIR/runtime.txt"
+                echo "python-2.7.13" > $BUILD_DIR/runtime.txt
            fi
            if [ "$PYTHON" = 3.6 ]; then
-                echo "python-3.6.2" > "$BUILD_DIR/runtime.txt"
+                echo "python-3.6.0" > $BUILD_DIR/runtime.txt
            fi
        fi
    fi
@@ -13,20 +13,18 @@
 VENDORED_MEMCACHED="https://lang-python.s3.amazonaws.com/$STACK/libraries/vendor/libmemcache.tar.gz"

 # Syntax sugar.
-# shellcheck source=bin/utils
-source "$BIN_DIR/utils"
+source $BIN_DIR/utils


 # If pylibmc exists within requirements, use vendored libmemcached.
-if (pip-grep -s requirements.txt pylibmc &> /dev/null) then
+if (pip-grep -s pylibmc &> /dev/null) then

  if [ ! -d ".heroku/vendor/lib/sasl2" ]; then
    echo "-----> Noticed pylibmc. Bootstrapping libmemcached."
    mkdir -p .heroku/vendor
    # Download and extract libmemcached into target vendor directory.
-    curl "$VENDORED_MEMCACHED" -s | tar zxv -C .heroku/vendor &> /dev/null
+    curl $VENDORED_MEMCACHED -s | tar zxv -C .heroku/vendor &> /dev/null
  fi

-  LIBMEMCACHED=$(pwd)/vendor
-  export LIBMEMCACHED
+  export LIBMEMCACHED=$(pwd)/vendor
 fi
@@ -1,16 +1,10 @@
-#!/usr/bin/env bash
-
 set +e
 runtime-fixer runtime.txt
 PYTHON_VERSION=$(cat runtime.txt)

-if [[ "$STACK" != "$CACHED_PYTHON_STACK" ]]; then
-    puts-step "Stack has changed from $CACHED_PYTHON_STACK to $STACK, clearing cache"
-    rm -fr .heroku/python-stack .heroku/python-version .heroku/python .heroku/vendor
-fi
-
+# Install Python.
 if [ -f .heroku/python-version ]; then
-  if [ ! "$(cat .heroku/python-version)" = "$PYTHON_VERSION" ]; then
+  if [ ! $(cat .heroku/python-version) = $PYTHON_VERSION ]; then
      puts-step "Found $(cat .heroku/python-version), removing"
      rm -fr .heroku/python
  else
@@ -18,30 +12,41 @@ if [ -f .heroku/python-version ]; then
  fi
 fi

+if [ ! $STACK = $CACHED_PYTHON_STACK ]; then
+    rm -fr .heroku/python .heroku/python-stack .heroku/vendor
+    unset SKIP_INSTALL
+fi
+
+
 if [ ! "$SKIP_INSTALL" ]; then
    puts-step "Installing $PYTHON_VERSION"

    # Prepare destination directory.
    mkdir -p .heroku/python

+    curl https://lang-python.s3.amazonaws.com/$STACK/runtimes/$PYTHON_VERSION.tar.gz -s | tar zxv -C .heroku/python &> /dev/null
    mcount "version.python.$PYTHON_VERSION"

-    if ! curl "https://lang-python.s3.amazonaws.com/$STACK/runtimes/$PYTHON_VERSION.tar.gz" -s | tar zxv -C .heroku/python &> /dev/null; then
+    if [[ $? != 0 ]] ; then
      puts-warn "Requested runtime ($PYTHON_VERSION) is not available for this stack ($STACK)."
      puts-warn "Aborting.  More info: https://devcenter.heroku.com/articles/python-support"
      exit 1
    fi

  # Record for future reference.
-  echo "$PYTHON_VERSION" > .heroku/python-version
-  echo "$STACK" > .heroku/python-stack
+  echo $PYTHON_VERSION > .heroku/python-version
+  echo $STACK > .heroku/python-stack
  FRESH_PYTHON=true

  hash -r
 fi

 # If Pip isn't up to date:
-if [ "$FRESH_PYTHON" ] || [[ ! $(pip --version) == *$PIP_UPDATE* ]]; then
+if [ "$FRESH_PYTHON" ] || [[ ! $(pip --version) == *$PIP_VERSION* ]]; then
+  WORKING_DIR=$(pwd)
+
+  TMPTARDIR=$(mktemp -d)
+  trap "rm -rf $TMPTARDIR" RETURN

  puts-step "Installing pip"

@@ -49,7 +54,7 @@ if [ "$FRESH_PYTHON" ] || [[ ! $(pip --version) == *$PIP_UPDATE* ]]; then
  rm -fr /app/.heroku/python/lib/python2.7/site-packages/pip-*
  rm -fr /app/.heroku/python/lib/python2.7/site-packages/setuptools-*

-  /app/.heroku/python/bin/python "$ROOT_DIR/vendor/get-pip.py" &> /dev/null
+  /app/.heroku/python/bin/python $ROOT_DIR/vendor/get-pip.py &> /dev/null

 fi

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+
+# Syntax sugar.
+source $BIN_DIR/utils
+
+if (pip-grep -s setuptools distribute &> /dev/null) then
+
+  puts-warn 'The package setuptools/distribute is listed in requirements.txt.'
+  puts-warn 'Please remove to ensure expected behavior. '
+
+fi
@@ -1,12 +1,10 @@
 #!/usr/bin/env bash

 # Syntax sugar.
-BIN_DIR=$(cd "$(dirname "$0")" || return; pwd) # absolute path
+BIN_DIR=$(cd $(dirname $0); pwd) # absolute path
+source $BIN_DIR/utils

-# shellcheck source=bin/utils
-source "$BIN_DIR/utils"
-
-DISABLE_COLLECTSTATIC=1 "$(dirname "${0:-}")/compile" "$1" "$2" "$3"
+DISABLE_COLLECTSTATIC=1 "$(dirname ${0:-})/compile" "$1" "$2" "$3"

 if [[ -f "$1/requirements-test.txt" ]]; then
    /app/.heroku/python/bin/pip install -r "$1/requirements-test.txt" --exists-action=w --src=./.heroku/src --disable-pip-version-check --no-cache-dir 2>&1 | cleanup | indent
@@ -1,15 +1,13 @@
 #!/usr/bin/env bash
 shopt -s extglob
-shopt -s nullglob

 # The standard library.
 if [[ ! -f  /tmp/stdlib.sh ]]; then
-  curl --retry 3 -s https://lang-common.s3.amazonaws.com/buildpack-stdlib/v8/stdlib.sh > /tmp/stdlib.sh
+  curl --retry 3 -s https://lang-common.s3.amazonaws.com/buildpack-stdlib/v2/stdlib.sh > /tmp/stdlib.sh
 fi
-# shellcheck source=/dev/null
 source /tmp/stdlib.sh

-if [ "$(uname)" == Darwin ]; then
+if [ $(uname) == Darwin ]; then
    sed() { command sed -l "$@"; }
 else
    sed() { command sed -u "$@"; }
@@ -28,12 +26,12 @@ cleanup() {

 # Buildpack Steps.
 puts-step() {
-  echo "-----> $*"
+  echo "-----> $@"
 }

 # Buildpack Warnings.
 puts-warn() {
-  echo " !     $*"
+  echo " !     $@"
 }

 # Does some serious copying.
@@ -53,8 +51,31 @@ deep-cp() {
 }


-# Measure the size of the Python installation.
-measure-size() {
-  echo "$(du -s .heroku/python 2>/dev/null || echo 0) | awk '{print $1}')"
+sub-env() {
+
+  WHITELIST=${2:-''}
+  BLACKLIST=${3:-'^(GIT_DIR|STACK|PYTHONHOME|LD_LIBRARY_PATH|LIBRARY_PATH|PATH)$'}
+
+  # Python-specific variables.
+  export PYHONHOME=$BUILD_DIR/.heroku/python
+  export PYTHONPATH=$BUILD_DIR/
+
+  (
+    if [ -d "$ENV_DIR" ]; then
+      for e in $(ls $ENV_DIR); do
+        echo "$e" | grep -E "$WHITELIST" | grep -qvE "$BLACKLIST" &&
+        export "$e=$(cat $ENV_DIR/$e)"
+        :
+      done
+    fi
+
+    $1
+
+  )
+}
+
+# Measure the size of the Python installation.
+measure-size() {
+  echo "$((du -s .heroku/python 2>/dev/null || echo 0) | awk '{print $1}')"
 }

@@ -1,4 +1,3 @@
-#!/usr/bin/env bash
 shopt -s extglob

 old-platform() {
@@ -10,15 +10,14 @@ hash -r

 echo "Building gdal..."

-VERSION="1.11.5"
-SOURCE_TARBALL="http://download.osgeo.org/gdal/${VERSION}/gdal-${VERSION}.tar.gz"
+SOURCE_TARBALL='http://download.osgeo.org/gdal/1.11.1/gdal-1.11.1.tar.gz'

 curl -L $SOURCE_TARBALL | tar zx

-pushd "gdal-${VERSION}"
+cd gdal-1.11.1
 ./configure --prefix=$OUT_PREFIX --enable-static=no  &&
 make
 make install

 # Cleanup
-popd
+cd ..
@@ -1,12 +0,0 @@
-#!/usr/bin/env bash
-# Build Path: /app/.heroku/python/
-# Build Deps: libraries/sqlite
-
-OUT_PREFIX=$1
-
-echo "Building PyPy..."
-SOURCE_TARBALL='https://bitbucket.org/pypy/pypy/downloads/pypy2-v5.8.0-linux64.tar.bz2'
-curl -L $SOURCE_TARBALL | tar jx
-cp -R pypy2-v5.8.0-linux64/* $OUT_PREFIX
-
-ln $OUT_PREFIX/bin/pypy $OUT_PREFIX/bin/python
@@ -1,12 +0,0 @@
-#!/usr/bin/env bash
-# Build Path: /app/.heroku/python/
-# Build Deps: libraries/sqlite
-
-OUT_PREFIX=$1
-
-echo "Building PyPy..."
-SOURCE_TARBALL='https://bitbucket.org/pypy/pypy/downloads/pypy3-v5.8.0-linux64.tar.bz2'
-curl -L $SOURCE_TARBALL | tar jx
-cp -R pypy3-v5.8.0-linux64/* $OUT_PREFIX
-
-ln $OUT_PREFIX/bin/pypy3 $OUT_PREFIX/bin/python
@@ -13,7 +13,3 @@ cd src
 ./configure --prefix=$OUT_PREFIX  --enable-unicode=ucs4 --with-ensurepip=no
 make
 make install
-
-# Remove unneeded test directories, similar to the official Docker Python images:
-# https://github.com/docker-library/python
-find "${OUT_PREFIX}" \( -type d -a \( -name test -o -name tests \) \) -exec rm -rf '{}' +
@@ -1,18 +0,0 @@
-#!/usr/bin/env bash
-# Build Path: /app/.heroku/python/
-# Build Deps: libraries/sqlite
-
-OUT_PREFIX=$1
-
-echo "Building Python..."
-SOURCE_TARBALL='https://python.org/ftp/python/3.5.3/Python-3.5.3.tgz'
-curl -L $SOURCE_TARBALL | tar xz
-mv Python-3.5.3 src
-cd src
-
-./configure --prefix=$OUT_PREFIX --with-ensurepip=no
-make
-make install
-
-# ln $OUT_PREFIX/bin/python3 $OUT_PREFIX/bin/python
-
@@ -1,21 +0,0 @@
-#!/usr/bin/env bash
-# Build Path: /app/.heroku/python/
-# Build Deps: libraries/sqlite
-
-OUT_PREFIX=$1
-
-echo "Building Python..."
-SOURCE_TARBALL='https://python.org/ftp/python/3.6.2/Python-3.6.2.tgz'
-curl -L $SOURCE_TARBALL | tar xz
-mv Python-3.6.2 src
-cd src
-
-./configure --prefix=$OUT_PREFIX --with-ensurepip=no
-make
-make install
-
-# Remove unneeded test directories, similar to the official Docker Python images:
-# https://github.com/docker-library/python
-find "${OUT_PREFIX}" \( -type d -a \( -name test -o -name tests \) \) -exec rm -rf '{}' +
-
-ln $OUT_PREFIX/bin/python3 $OUT_PREFIX/bin/python
@@ -1 +1,2 @@
-bob-builder==0.0.13
+# TODO: Replace this once the bob-builder changes on master are released:
+https://github.com/kennethreitz/bob-builder/archive/54211376a8fb49c67ecbd6798bd45b55f4d125f4.zip
@@ -1 +0,0 @@
-django
@@ -1,2 +1 @@
-city_database
-stopwords
+wordnet
@@ -1 +0,0 @@
-python-2.7.13
@@ -1 +0,0 @@
-pylibmc
@@ -0,0 +1 @@
+python-3.6.0
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash

+
 testPipenv() {
  compile "pipenv"
  assertCapturedSuccess
@@ -7,7 +8,7 @@ testPipenv() {

 testPipenvVersion() {
  compile "pipenv-version"
-  assertCaptured "3.6.2"
+  assertCaptured "3.6.0"
  assertCapturedSuccess
 }

@@ -16,18 +17,14 @@ testNoRequirements() {
  assertCapturedError
 }

-testGEOS() {
-  BUILD_WITH_GEO_LIBRARIES=1 compile "geos"
-  assertCaptured "geos"
-  assertCapturedSuccess
-}

 testNLTK() {
  compile "nltk"
-  assertCaptured "Downloading NLTK packages: city_database stopwords"
+  assertCaptured "wordnet"
  assertCapturedSuccess
 }

+
 testSetupPy() {
  compile "setup-py"
  assertCaptured "maya"
@@ -47,12 +44,6 @@ testPsycopg2() {
  assertCapturedSuccess
 }

-testPylibmc() {
-  compile "pylibmc"
-  assertCaptured "pylibmc"
-  assertCapturedSuccess
-}
-
 testPython2() {
  compile "python2"
  assertCaptured "python-2.7.13"
@@ -61,30 +52,11 @@ testPython2() {

 testPython3() {
  compile "python3"
-  assertCaptured "python-3.6.2"
+  assertCaptured "python-3.6.0"
  assertCapturedSuccess
 }

-testSmartRequirements() {
-  local cache_dir="$(mktmpdir)"
-  compile "requirements-standard" "$cache_dir"
-  assertFile "requests" ".heroku/python/requirements-declared.txt"
-  assertCapturedSuccess
-  compile "psycopg2" "$cache_dir"
-  assertCaptured "Uninstalling requests"
-  assertFile "psycopg2" ".heroku/python/requirements-declared.txt"
-  assertCapturedSuccess
-}

-testStackChange() {
-  local cache_dir="$(mktmpdir)"
-  mkdir -p "${cache_dir}/.heroku"
-  echo "different-stack" > "${cache_dir}/.heroku/python-stack"
-  compile "requirements-standard" "$cache_dir"
-  assertCaptured "clearing cache"
-  assertFile "$STACK" ".heroku/python-stack"
-  assertCapturedSuccess
-}


 pushd $(dirname 0) >/dev/null
@@ -150,11 +150,6 @@ _assertContains()
    esac

    fail "${msg:-${default_msg}}"
-
-    if [ "${haystack_type}" == "file" ]; then
-      echo
-      cat "${haystack}"
-    fi
  fi
 }

@@ -5,25 +5,25 @@ case $(ulimit -u) in
 # Standard-1X (+Free, +Hobby) Dyno
 256)
  export DYNO_RAM=512
-  export WEB_CONCURRENCY=${WEB_CONCURRENCY:-2}
+  export WEB_CONCURRENCY=${WEB_CONCURRENCY:-02}
  ;;

 # Standard-2X Dyno
 512)
  export DYNO_RAM=1024
-  export WEB_CONCURRENCY=${WEB_CONCURRENCY:-4}
+  export WEB_CONCURRENCY=${WEB_CONCURRENCY:-04}
  ;;

 # Performance-M Dyno
 16384)
  export DYNO_RAM=2560
-  export WEB_CONCURRENCY=${WEB_CONCURRENCY:-8}
+  export WEB_CONCURRENCY=${WEB_CONCURRENCY:-08}
  ;;

 # Performance-L Dyno
 32768)
-  export DYNO_RAM=14336
-  export WEB_CONCURRENCY=${WEB_CONCURRENCY:-11}
+  export DYNO_RAM=6656
+  export WEB_CONCURRENCY=${WEB_CONCURRENCY:-011}
  ;;

-esac
+esac
@@ -2,58 +2,26 @@
 # -*- coding: utf-8 -*-

 """Usage:
-  pip-grep [-s] <reqfile> <package>...
+  pip-grep [-s] <package>...

 Options:
  -h --help     Show this screen.
 """
-import os
 from docopt import docopt
-from pip.req import parse_requirements
-from pip.index import PackageFinder
-from pip._vendor.requests import session
-
-requests = session()
+from pkg_resources import DistributionNotFound, get_distribution


-class Requirements(object):
-    def __init__(self, reqfile=None):
-        super(Requirements, self).__init__()
-        self.path = reqfile
-        self.requirements = []
+def has_any_distribution(names, silent=False):
+    for name in names:
+        try:
+            get_distribution(name)
+        except DistributionNotFound:
+            continue

-        if reqfile:
-            self.load(reqfile)
-
-    def __repr__(self):
-        return '<Requirements \'{}\'>'.format(self.path)
-
-    def load(self, reqfile):
-        if not os.path.exists(reqfile):
-            raise ValueError('The given requirements file does not exist.')
-
-        finder = PackageFinder([], [], session=requests)
-        for requirement in parse_requirements(reqfile, finder=finder, session=requests):
-            if requirement.req:
-                if not getattr(requirement.req, 'name', None):
-                    # Prior to pip 8.1.2 the attribute `name` did not exist.
-                    requirement.req.name = requirement.req.project_name
-                self.requirements.append(requirement.req)
-
-
-def grep(reqfile, packages, silent=False):
-    try:
-        r = Requirements(reqfile)
-    except ValueError:
        if not silent:
-            print('There was a problem loading the given requirement file.')
-        exit(os.EX_NOINPUT)
+            print('Package {name} found!'.format(name=name))

-    for req in r.requirements:
-        if req.name in packages:
-            if not silent:
-                print('Package {} found!'.format(req.name))
-            exit(0)
+        exit(0)

    if not silent:
        print('Not found.')
@@ -63,10 +31,7 @@ def grep(reqfile, packages, silent=False):

 def main():
    args = docopt(__doc__, version='pip-grep')
-
-    kwargs = {'reqfile': args['<reqfile>'], 'packages': args['<package>'], 'silent': args['-s']}
-
-    grep(**kwargs)
+    has_any_distribution(names=args['<package>'], silent=args['-s'])


 if __name__ == '__main__':
@@ -1,38 +0,0 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-"""Usage:
-  sp-grep [-s] <package>...
-
-Options:
-  -h --help     Show this screen.
-"""
-from docopt import docopt
-from pkg_resources import DistributionNotFound, get_distribution
-
-
-def has_any_distribution(names, silent=False):
-    for name in names:
-        try:
-            get_distribution(name)
-        except DistributionNotFound:
-            continue
-
-        if not silent:
-            print('Package {name} found!'.format(name=name))
-
-        exit(0)
-
-    if not silent:
-        print('Not found.')
-
-    exit(1)
-
-
-def main():
-    args = docopt(__doc__, version='sp-grep')
-    has_any_distribution(names=args['<package>'], silent=args['-s'])
-
-
-if __name__ == '__main__':
-    main()