[R] Corrupted package?

Patrick Connolly p_connolly @ending from @ling@hot@co@nz
Wed Oct 31 08:22:48 CET 2018

I got this message while using a dplyr mutate call: 

Error in get0(oNam, envir = ns) : 
  lazy-load database '/home/hrapgc/local/R-3.5.1/library/pkgconfig/R/pkgconfig.rdb' is corrupt

I had only just installed R-3.5.1 and updated the packages (using the
function update.packages with the checkBuild parameter to TRUE) in the
library I use with that version.  So, I checked the size of
pkgconfig.rdb with the previous version from the bash prompt:

> ll `locate pkgconfig.rdb`

-rw-r--r-- 1 hrapgc hrapgc  5335 May  8 14:06 /home/hrapgc/local/R-3.5.0/library/pkgconfig/help/pkgconfig.rdb
-rw-r--r-- 1 hrapgc hrapgc 15669 May  8 14:06 /home/hrapgc/local/R-3.5.0/library/pkgconfig/R/pkgconfig.rdb
-rw-r--r-- 1 hrapgc hrapgc  5359 Oct 31 16:12 /home/hrapgc/local/R-3.5.1/library/pkgconfig/help/pkgconfig.rdb
-rw-r--r-- 1 hrapgc hrapgc  4367 Oct 31 16:12 /home/hrapgc/local/R-3.5.1/library/pkgconfig/R/pkgconfig.rdb

While the pkgconfig.rdb filesize in the help directory is nearly
identical in size to that in R-3.5.0 (and previous versions) the one
in the R directory is very much smaller.  So the error message
probably makes sense.

The question is: how could that have happened?  I removed the package
and reinstalled it, but that made no difference.  Is this documented

   ___    Patrick Connolly   
 {~._.~}                   Great minds discuss ideas    
 _( Y )_  	         Average minds discuss events 
(:_~*~_:)                  Small minds discuss people  
 (_)-(_)  	                      ..... Eleanor Roosevelt

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