Possibly useful tools

[wlandau]

From @shikokuchuo:

Came across this randomly:

https://github.com/wch/r-source/blob/tools4pkgs/src/library/tools/R/packages.R#L463

[shikokuchuo]

@wlandau I guess with the great stuff you've just done with igraph, this base R function becomes irrelevant? Please feel free to close this.