Update a specific R package and its dependencies

As Ben indicated in his comment, you need to get the dependencies for fields, then filter out the packages with Priority "Base" or "Recommended", and then pass that list of package to install.packages() to deal with the installation. Something like:

instPkgPlusDeps <- function(pkg, install = FALSE,                            which = c("Depends", "Imports", "LinkingTo"),                            inc.pkg = TRUE) {  stopifnot(require("tools")) ## load tools  ap <- available.packages() ## takes a minute on first use  ## get dependencies for pkg recursively through all dependencies  deps <- package_dependencies(pkg, db = ap, which = which, recursive = TRUE)  ## the next line can generate warnings; I think these are harmless  ## returns the Priority field. `NA` indicates not Base or Recommended  pri <- sapply(deps[[1]], packageDescription, fields = "Priority")  ## filter out Base & Recommended pkgs - we want the `NA` entries  deps <- deps[[1]][is.na(pri)]  ## install pkg too?  if (inc.pkg) {    deps = c(pkg, deps)  }  ## are we installing?  if (install) {    install.packages(deps)  }  deps ## return dependencies}

This gives:

R> instPkgPlusDeps("fields")Loading required package: tools[1] "fields" "spam"   "maps"

which matches with

> packageDescription("fields", fields = "Depends")[1] "R (>= 2.13), methods, spam, maps"

You get warnings from the sapply() line if a dependency in deps is not actually installed. I think these are harmless as the returned value in that case is NA and we use that to indicate packages we want to install. I doubt it will affect you if you have 4000 packages installed.

The default is not to install packages but just return the list of dependencies. I figured this was safest as you may not realise the chain of dependencies implied and end up installing hundreds of packages accidentally. Pass in install = TRUE if you are happy to install the packages indicated.

Note that I restrict the types of dependencies searched for - things balloon if you use which = "most" - fields has over 300 such dependencies once you recursively resolve those dependences (which include Suggests: fields too). which = "all" will look for everything, including Enhances: which will be a bigger list of packages again. See ?tools::package_dependencies for valid inputs for the which argument.

My answer builds on Gavin's answer... Note that the original poster, user3175783, asked for a more intelligent version of update.packages(). That function skips installing packages that are already up-to-date. But Gavin's solution installs a package and all its dependencies, whether they are up-to-date or not. I used Gavin's tip of skipping base packages (which are not actually installable), and coded up a solution which also skips up-to-date packages.

The main function is installPackages(). This function and its helpers perform a topological-sort of the dependency tree rooted at a given set of packages. The packages in the resulting list are checked for staleness and installed one by one. Here's some example output:

> remove.packages("tibble")Removing package from ‘/home/frederik/.local/lib/x86_64/R/packages’(as ‘lib’ is unspecified)> installPackages(c("ggplot2","stringr","Rcpp"), dry_run=T)##  Package  digest  is out of date ( 0.6.9 < 0.6.10 )Would have installed package  digest ##  Package  gtable  is up to date ( 0.2.0 )##  Package  MASS  is up to date ( 7.3.45 )##  Package  Rcpp  is out of date ( 0.12.5 < 0.12.8 )Would have installed package  Rcpp ##  Package  plyr  is out of date ( 1.8.3 < 1.8.4 )Would have installed package  plyr ##  Package  stringi  is out of date ( 1.0.1 < 1.1.2 )Would have installed package  stringi ##  Package  magrittr  is up to date ( 1.5 )##  Package  stringr  is out of date ( 1.0.0 < 1.1.0 )Would have installed package  stringr ...##  Package  lazyeval  is out of date ( 0.1.10 < 0.2.0 )Would have installed package  lazyeval ##  Package  tibble  is not currently installed, installingWould have installed package  tibble ##  Package  ggplot2  is out of date ( 2.1.0 < 2.2.0 )Would have installed package  ggplot2 

Here's the code, sorry about the length:

library(tools)# Helper: a "functional" interface depth-first-searchfdfs = function(get.children) {  rec = function(root) {    cs = get.children(root);    out = c();    for(c in cs) {      l = rec(c);      out = c(out, setdiff(l, out));    }    c(out, root);  }  rec}# Entries in the package "Priority" field which indicate the# package can't be upgraded. Not sure why we would exclude# recommended packages, since they can be upgraded...#excl_prio = c("base","recommended")excl_prio = c("base")# Find the non-"base" dependencies of a package.nonBaseDeps = function(packages,  ap=available.packages(),  ip=installed.packages(), recursive=T) {  stopifnot(is.character(packages));  all_deps = c();  for(p in packages) {    # Get package dependencies. Note we are ignoring version    # information    deps = package_dependencies(p, db = ap, recursive = recursive)[[1]];    ipdeps = match(deps,ip[,"Package"])    # We want dependencies which are either not installed, or not part    # of Base (e.g. not installed with R)    deps = deps[is.na(ipdeps) | !(ip[ipdeps,"Priority"] %in% excl_prio)];    # Now check that these are in the "available.packages()" database    apdeps = match(deps,ap[,"Package"])    notfound = is.na(apdeps)    if(any(notfound)) {      notfound=deps[notfound]      stop("Package ",p," has dependencies not in database: ",paste(notfound,collapse=" "));    }    all_deps = union(deps,all_deps);  }  all_deps}# Return a topologically-sorted list of dependencies for a given list# of packages. The output vector contains the "packages" argument, and# recursive dependencies, with each dependency occurring before any# package depending on it.packageOrderedDeps = function(packages, ap=available.packages()) {  # get ordered dependencies  odeps = sapply(packages,    fdfs(function(p){nonBaseDeps(p,ap=ap,recursive=F)}))  # "unique" preserves the order of its input  odeps = unique(unlist(odeps));  # sanity checks  stopifnot(length(setdiff(packages,odeps))==0);  seen = list();  for(d in odeps) {    ddeps = nonBaseDeps(d,ap=ap,recursive=F)    stopifnot(all(ddeps %in% seen));    seen = c(seen,d);  }  as.vector(odeps)}# Checks if a package is up-to-date. isPackageCurrent = function(p,  ap=available.packages(),  ip=installed.packages(),  verbose=T) {    if(verbose) msg = function(...) cat("## ",...)    else msg = function(...) NULL;    aprow = match(p, ap[,"Package"]);    iprow = match(p, ip[,"Package"]);    if(!is.na(iprow) && (ip[iprow,"Priority"] %in% excl_prio)) {      msg("Package ",p," is a ",ip[iprow,"Priority"]," package\n");      return(T);    }    if(is.na(aprow)) {      stop("Couldn't find package ",p," among available packages");    }    if(is.na(iprow)) {      msg("Package ",p," is not currently installed, installing\n");      F;    } else {      iv = package_version(ip[iprow,"Version"]);      av = package_version(ap[aprow,"Version"]);      if(iv < av) {        msg("Package ",p," is out of date (",            as.character(iv),"<",as.character(av),")\n");        F;      } else {        msg("Package ",p," is up to date (",            as.character(iv),")\n");        T;      }    }}# Like install.packages, but skips packages which are already# up-to-date. Specify dry_run=T to just see what would be done.installPackages =    function(packages,             ap=available.packages(), dry_run=F,             want_deps=T) {  stopifnot(is.character(packages));  ap=tools:::.remove_stale_dups(ap)  ip=installed.packages();  ip=tools:::.remove_stale_dups(ip)  if(want_deps) {    packages = packageOrderedDeps(packages, ap);  }  for(p in packages) {    curr = isPackageCurrent(p,ap,ip);    if(!curr) {      if(dry_run) {        cat("Would have installed package ",p,"\n");      } else {        install.packages(p,dependencies=F);      }    }  }}# Convenience function to make sure all the libraries we have loaded# in the current R session are up-to-date (and to update them if they# are not)updateAttachedLibraries = function(dry_run=F) {  s=search();  s=s[grep("^package:",s)];  s=gsub("^package:","",s)  installPackages(s,dry_run=dry_run);}