force sed to be line buffered

bin/compile

@@ -175,7 +175,7 @@ fi
 
 # Install dependencies with Pip.
 puts-step "Installing dependencies using pip (1.2.1)"
-pip install --use-mirrors -r requirements.txt --exists-action=w --src=./.heroku/src | indent # | cleanup | indent
+pip install --use-mirrors -r requirements.txt --exists-action=w --src=./.heroku/src | cleanup | indent
 
 # Django collectstatic support.
 source $BIN_DIR/steps/collectstatic

bin/utils

@@ -8,7 +8,7 @@ indent() {
 
 # Clean up pip output
 cleanup() {
-  sed -e 's/\.\.\.\+/.../g' | sed -e '/already satisfied/Id' | sed -e '/Overwriting/Id' |  sed -e '/python executable/Id' | sed -e '/no previously-included files/Id'
+  sed -l -e 's/\.\.\.\+/.../g' | sed -e '/already satisfied/Id' | sed -l -e '/Overwriting/Id' |  sed -l -e '/python executable/Id' | sed -l -e '/no previously-included files/Id'
 }
 
 # Virtualenv wrapper.