retina_package_demo.sagews

︠bb786b6b-b659-4613-9faa-fe67deef6467s︠
% auto
︠742ccdcd-f984-4ccb-8443-4bc6f0aa2a93s︠
︠47f6a897-347d-473b-b65d-293f52687119︠
︠562e7e6b-aa25-4b3b-a231-53cd32f62e80s︠
%default_mode r

︠19067bad-4611-406b-ab4c-d5e1c29e0157︠
︠959b7ce7-b08f-4a5c-b768-684f4aefd604s︠
install.packages(devtools)

Error in install.packages(devtools) : object 'devtools' not found