Error with guix pull

[Gary Johnson]

Hi Guix,

I tried running "guix pull" today, and at the end of the compilation
phase, I was presented with this error:

--8<-------------------------------------------------------------->8--------
copying and compiling to 
'/gnu/store/29nci1d7zykwriwhnpxqivilbi6cr8wc-guix-latest' with Guile 2.2.3...
loading...       26.1% of 656 filesrandom seed for tests: 1513007529
compiling...    100.0% of 656 files
Backtrace:
Exception thrown while printing backtrace:
In procedure public-lookup: Module named (system repl debug) does not exist
--8<-------------------------------------------------------------->8--------

Did Guix suddenly get a new guile dependency that I need to install? Any
advice would be appreciated.

Thanks,
  Gary