Github user echarles commented on the pull request:
https://github.com/apache/incubator-zeppelin/pull/702#issuecomment-193883993
I guess knitr uses evaluate under the hood
(https://cran.rstudio.com/web/packages/evaluate/index.html mentions it as
reverse import and https://cran.rstudio.com/web/packages/knitr/index.html lists
it in its imports).
I usually only installs knitr with `install.packages('knitr', repos =
'http://cran.us.r-project.org')` and all transitive dependencies of scope
c("Depends", "Imports", "LinkingTo") (see
https://stat.ethz.ch/R-manual/R-devel/library/utils/html/install.packages.html)
are also installed.
So no need to install `evaluate` explicitly.
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