v92

# Conflicts:
#	bin/compile

CHANGELOG.md

@@ -1,5 +1,21 @@
 # Python Buildpack Changelog
 
+## v92
+
+Improved cache functionality and fix egg-links regression. 
+
+## v91
+
+Bugfix, rolled back to v88.
+
+## v90
+
+Bugfix.
+
+## v89
+
+Improved cache functionality and fix egg-links regression. 
+
 ## v88
 
 Fixed bug with editable pip installations. 

bin/compile

@@ -148,12 +148,13 @@ bpwatch start restore_cache
     cp -R $CACHE_DIR/.heroku/python-version .heroku/ &> /dev/null || true
     cp -R $CACHE_DIR/.heroku/vendor .heroku/ &> /dev/null || true
     cp -R $CACHE_DIR/.heroku/venv .heroku/ &> /dev/null || true
+    if [[ -d $CACHE_DIR/.heroku/src ]]; then
+      cp -R $CACHE_DIR/.heroku/src .heroku/ &> /dev/null || true
+    fi
 
 bpwatch stop restore_cache
 
 mkdir -p $(dirname $PROFILE_PATH)
-
-# Make the directory for -e pip installations.
 mkdir -p /app/.heroku/src
 
 if [[ $BUILD_DIR != '/app' ]]; then
@@ -162,6 +163,7 @@ if [[ $BUILD_DIR != '/app' ]]; then
     ln -s $BUILD_DIR/.heroku/python /app/.heroku/python
     ln -s $BUILD_DIR/.heroku/vendor /app/.heroku/vendor
     ln -s $BUILD_DIR/.heroku/venv /app/.heroku/venv
+    # Note: .heroku/src is copied in later.
 fi
 
 # Install Python.
@@ -188,13 +190,12 @@ sub-env $BIN_DIR/steps/geo-libs
 # GDAL support.
 source $BIN_DIR/steps/gdal
 
-# Install dependencies with Pip.
+# Install dependencies with Pip (where the magic happens).
 source $BIN_DIR/steps/pip-install
 
 # Django collectstatic support.
 sub-env $BIN_DIR/steps/collectstatic
 
-
 # Create .profile script for application runtime environment variables.
 set-env PATH '$HOME/.heroku/python/bin:$PATH'
 set-env PYTHONUNBUFFERED true
@@ -208,7 +209,8 @@ set-default-env PYTHONPATH /app/
 # Install sane-default script for $WEB_CONCURRENCY and $FORWARDED_ALLOW_IPS.
 cp $ROOT_DIR/vendor/python.gunicorn.sh $GUNICORN_PROFILE_PATH
 
-# Deep copy the directory for -e pip installations
+# Support for pip install -e.
+rm -fr $BUILD_DIR/.heroku/src
 deep-cp /app/.heroku/src $BUILD_DIR/.heroku/src
 
 # Experimental post_compile hook.
@@ -224,6 +226,7 @@ bpwatch start dump_cache
   rm -rf $CACHE_DIR/.heroku/python-stack
   rm -rf $CACHE_DIR/.heroku/vendor
   rm -rf $CACHE_DIR/.heroku/venv
+  rm -rf $CACHE_DIR/.heroku/src
 
   mkdir -p $CACHE_DIR/.heroku
   cp -R .heroku/python $CACHE_DIR/.heroku/
@@ -231,6 +234,9 @@ bpwatch start dump_cache
   cp -R .heroku/python-stack $CACHE_DIR/.heroku/ &> /dev/null || true
   cp -R .heroku/vendor $CACHE_DIR/.heroku/ &> /dev/null || true
   cp -R .heroku/venv $CACHE_DIR/.heroku/ &> /dev/null || true
+  if [[ -d .heroku/src ]]; then
+    cp -R .heroku/src $CACHE_DIR/.heroku/ &> /dev/null || true
+  fi
 
 bpwatch stop dump_cache
 

bin/steps/pip-install

@@ -1,13 +1,15 @@
 # Install dependencies with Pip.
 puts-cmd "pip install -r requirements.txt"
 
+# rewrite any existing egg links to point to the build dir so pip does not fail with a mismatch error
+find .heroku/python/lib/python*/site-packages/ -name "*.egg-link" -print0 | xargs -r -0 -n 1 sed -i -e "s#/app/#$(pwd)/#"
+find .heroku/python/lib/python*/site-packages/ -name "*.pth" -print0 | xargs -r -0 -n 1 sed -i -e "s#/app/#/$(pwd)/#"
+
 [ ! "$FRESH_PYTHON" ] && bpwatch start pip_install
 [ "$FRESH_PYTHON" ] && bpwatch start pip_install_first
 
-
-
 set +e
-/app/.heroku/python/bin/pip install -r 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 +27,9 @@ cp requirements.txt .heroku/python/requirements-declared.txt
 [ ! "$FRESH_PYTHON" ] && bpwatch stop pip_install
 [ "$FRESH_PYTHON" ] && bpwatch stop pip_install_first
 
+# rewrite build dir in egg links to /app so things are found at runtime
+find .heroku/python/lib/python*/site-packages/ -name "*.egg-link" -print0 | xargs -r -0 -n 1 sed -i -e "s#$(pwd)/#/app/#"
+find .heroku/python/lib/python*/site-packages/ -name "*.pth" -print0 | xargs -r -0 -n 1 sed -i -e "s#$(pwd)/#/app/#"
+
+
 echo