HyukjinKwon commented on a change in pull request #27376:
[SPARK-30665][PYSPARK] Eliminate pypandoc dependency
URL: https://github.com/apache/spark/pull/27376#discussion_r372760353
##########
File path: docs/README.md
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@@ -37,14 +37,19 @@ installed. Also install the following libraries:
```sh
$ sudo gem install jekyll jekyll-redirect-from rouge
-# Following is needed only for generating API docs
-$ sudo pip install sphinx pypandoc mkdocs numpy
-$ sudo Rscript -e 'install.packages(c("knitr", "devtools", "testthat",
"rmarkdown"), repos="https://cloud.r-project.org/";)'
-$ sudo Rscript -e 'devtools::install_version("roxygen2", version = "5.0.1",
repos="https://cloud.r-project.org/";)'
```
Note: If you are on a system with both Ruby 1.9 and Ruby 2.0 you may need to
replace gem with gem2.0.
+If you'd like to generate API docs, you'll need to [install
Pandoc](https://pandoc.org/installing.html) and also
Review comment:
I would say `... you'll need to [install
Pandoc](https://pandoc.org/installing.html) for R documentation and also ...`
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