add: Add dependencies to a DESCRIPTION file
In zkamvar/diaper: A Lightweight Way To Catalogue Project Dependencies

Description Usage Arguments Value Examples

Add dependencies to a DESCRIPTION file

1 2	add(replacements = c("utils", "stats", "grDevices"), field = "Imports", file = "DESCRIPTION", name = "myAnalysis", write = FALSE)

`replacements`	A character string of packages to add/replace
`field`	Which field should be modified (defaults to "Imports")
`file`	The DESCRIPTION file.
`name`	The name of the project (in the case that the DESCRIPTION does not exist.)
`write`	a logical. If 'TRUE', DESCRIPTION file will be overwritten, if 'FALSE', the file will be printed to screen.

if 'write = TRUE', NULL, if 'write = FALSE', the DESCRIPTION file will be printed to screen.

# a superficial example with this package's DESCRIPTION file
LIB <- .libPaths()[1]
pkg <- file.path(LIB, "diaper", "DESCRIPTION")
# note the Dependency version for R
write.dcf(read.dcf(pkg))
# now we change it to be 3.0
add(replacements = "R (>= 3.0.0)", field = "Depends",
    file = pkg, write = FALSE)