ggplot2/plyr interaction with latest R-devel?

I apologize in advance for not having done more homework in advance,
but thought I would send this along to see if anyone else was seeing this.

  I am having some sort of ggplot2/plyr/very-recent-R-devel dependency
issues.

  Just installed

R Under development (unstable) (2014-09-01 r66509) -- "Unsuffered
Consequences"

 from source.

packageVersion("ggplot2")

[1] ?1.0.0?

packageVersion("plyr")

[1] ?1.8.1?

library(plyr) works

  but then I get:

library(ggplot2)
Error in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck =
vI[[i]]) :
  namespace ?plyr? 1.8.1 is being loaded, but >= 1.7.1 is required
Error: package or namespace load failed for ?ggplot2?

  I don't remember when I most recently updated my r-devel (it was
probably a few months old); nothing in recent commits rings a bell.

  Works fine on R version 3.1.1 (except for a "ggplot2 built under
3.2.0 warning").

  Does anyone else see this or is it just something weird about my setup?

  Ben Bolker