Blacklist for old apps (#466)

* fixed the bug for pypy-5.8.0

* update changelog

Signed-off-by: Kenneth Reitz <me@kennethreitz.org>

* blacklist for old apps

Signed-off-by: Kenneth Reitz <me@kennethreitz.org>

* only blacklist pythonhome/path

Signed-off-by: Kenneth Reitz <me@kennethreitz.org>

* updated changelog

Signed-off-by: Kenneth Reitz <me@kennethreitz.org>

CHANGELOG.md

@@ -1,5 +1,15 @@
 # Python Buildpack Changelog
 
+# 114
+
+- Bugfixes.
+
+Blacklisting `PYTHONHOME` and `PYTHONPATH` for older apps. Upgrades to nltk support.
+
+# 113
+
+- Updates to Pipenv support.
+
 # 112
 
 Bugfix.

README.md

@@ -4,7 +4,7 @@
 
 [![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 [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 [Pipenv](http://docs.pipenv.org/en/latest/), [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.
 
@@ -16,7 +16,7 @@ See it in Action
 Deploying a Python application couldn't be easier:
 
     $ ls
-    Procfile  requirements.txt  web.py
+    Pipfile		Procfile	web.py
 
     $ heroku create --buildpack heroku/python
 
@@ -24,16 +24,14 @@ Deploying a Python application couldn't be easier:
     ...
     -----> Python app detected
     -----> Installing python-3.6.2
-         $ 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
-
+    -----> Installing pip
+    -----> Installing requirements with latest pipenv...
+           ...
+           Installing dependencies from Pipfile...
     -----> Discovering process types
            Procfile declares types -> (none)
 
-A `requirements.txt` file must be present at the root of your application's repository.
+A `Pipfile` or `requirements.txt` 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:
 

bin/steps/nltk

@@ -21,10 +21,10 @@ if sp-grep -s nltk; then
 
     if [ -f "$nltk_packages_definition" ]; then
 
-        nltk_packages=$(tr "\n" " " < "$nltk_packages_definition")
-        puts-step "Downloading NLTK packages: $nltk_packages"
+        readarray -t nltk_packages < "$nltk_packages_definition"
+        puts-step "Downloading NLTK packages: ${nltk_packages[*]}"
 
-        python -m nltk.downloader -d "$BUILD_DIR/.heroku/python/nltk_data" "$nltk_packages"  | indent
+        python -m nltk.downloader -d "$BUILD_DIR/.heroku/python/nltk_data" "${nltk_packages[@]}" | indent
         set_env NLTK_DATA "/app/.heroku/python/nltk_data"
 
     else
@@ -32,4 +32,3 @@ if sp-grep -s nltk; then
         puts-warn "Learn more: https://devcenter.heroku.com/articles/python-nltk"
     fi
 fi
-

bin/steps/pip-install

@@ -6,6 +6,9 @@ if [ ! "$SKIP_PIP_INSTALL" ]; then
     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
     PIP_STATUS="${PIPESTATUS[0]}"
     set -e

test/fixtures/nltk/nltk.txt

@@ -1 +1,2 @@
-wordnet
+city_database
+stopwords

test/run

@@ -24,7 +24,7 @@ testGEOS() {
 
 testNLTK() {
   compile "nltk"
-  assertCaptured "wordnet"
+  assertCaptured "Downloading NLTK packages: city_database stopwords"
   assertCapturedSuccess
 }
 

test/utils

@@ -150,6 +150,11 @@ _assertContains()
     esac
 
     fail "${msg:-${default_msg}}"
+
+    if [ "${haystack_type}" == "file" ]; then
+      echo
+      cat "${haystack}"
+    fi
   fi
 }