build: last try

Author: amejiarosario

.circleci/config.yml

@@ -66,7 +66,7 @@ jobs: # a collection of steps
             - ruby-
       - run:
           name: install mathematical
-          command: cd book/config && bundle check || sudo apt-get update && sudo apt-get -qq -y install bison flex libffi-dev libxml2-dev libgdk-pixbuf2.0-dev libcairo2-dev libpango1.0-dev ttf-lyx
+          command: cd book/config && bundle check || sudo apt-get update && sudo apt-get -qq -y install bison flex libffi-dev libxml2-dev libgdk-pixbuf2.0-dev libcairo2-dev libpango1.0-dev ttf-lyx && MATHEMATICAL_USE_SYSTEM_LASEM=1 gem install mathematical
 
       - run:
           name: Bundle Install