(specifications->manifest
 '(
	 "coreutils"
	 "findutils"
	 "procps"
	 "strace"
	 "openssh"
	 "mit-krb5"
	 "bash"
	 "which"
	 "zip"
	 "geeqie"
	 "util-linux"
	 "grep"
	 "glibc"
	 ;; for locales
	 "glibc-locales"
	 ;; front-end software
	 "jupyter-zpid"
	 "python-jupyterlab"
	 ;; available notebook kernel
	 ; provided by jupyter-zpid
 ;"python-ipykernel"
 "r-irkernel"
 "rstudio-server-zpid"
 "r"
 ;; for RMarkdown
 "r-knitr"
 "r-yaml"
 "r-markdown"
 "r-rmarkdown"
 "texlive"
 ;; commonly used r packages
 "r-psych"
 "r-ggplot2"
 "r-lattice"
 "r-foreign"
 "r-readr"
 "r-haven"
 "r-dplyr"
 "r-tidyr"
 "r-stringr"
 "r-forecast"
 "r-lme4"
 "r-nlme"
 "r-nnet"
 "r-glmnet"
 "r-caret"
 "r-xmisc"
 "r-splitstackshape"
 "r-tm"
 "r-quanteda"
 "r-topicmodels"
 "r-stm"
 ;;"r-parallel"
 "r-dt"
 "r-nlp"
 "r-data-table"
 "r-hmisc"
 "r-learnr"
 "r-metafor"
 ;; for rmarkdown
 "ghc-pandoc"
 ))