diff --git a/doc/source/configuration.rst b/doc/source/configuration.rst
index 1f5797c22d..384ceee41a 100644
--- a/doc/source/configuration.rst
+++ b/doc/source/configuration.rst
@@ -427,6 +427,9 @@ can be specified as a comma separated list.
 
       LIBS_FROM_GIT=python-keystoneclient,oslo.config
 
+Setting the variable to ``ALL`` will activate the download for all
+libraries.
+
 Virtual Environments
 --------------------
 
diff --git a/inc/python b/inc/python
index 495150d4b8..e013dfab36 100644
--- a/inc/python
+++ b/inc/python
@@ -192,7 +192,7 @@ function get_from_global_requirements {
 function use_library_from_git {
     local name=$1
     local enabled=1
-    [[ ,${LIBS_FROM_GIT}, =~ ,${name}, ]] && enabled=0
+    [[ ${LIBS_FROM_GIT} = 'ALL' ]] || [[ ,${LIBS_FROM_GIT}, =~ ,${name}, ]] && enabled=0
     return $enabled
 }
 
diff --git a/stackrc b/stackrc
index 4ba57c9cb6..8e1900dd94 100644
--- a/stackrc
+++ b/stackrc
@@ -208,6 +208,9 @@ REQUIREMENTS_DIR=$DEST/requirements
 # ex: LIBS_FROM_GIT=python-keystoneclient,oslo.config
 #
 # Will install those 2 libraries from git, the rest from pypi.
+#
+# Setting the variable to 'ALL' will activate the download for all
+# libraries.
 
 
 ##############