"postgresql",
"postgresql-contrib",
"python3-dev",
- "python-epydoc",
+ "python3-venv",
+ "python3-virtualenv",
"r-base",
"r-cran-testthat",
+ "r-cran-devtools",
+ "r-cran-knitr",
+ "r-cran-markdown",
+ "r-cran-roxygen2",
+ "r-cran-xml",
"sudo",
- "python3-virtualenv",
- "python3-venv",
"wget",
"xvfb",
"zlib1g-dev",