"fink update fink" fails on missing sha256

Dear all,

I have a problem installing fink-0.43.0-121.
Looks like a missing dependency. This may be because fink-10.13.info now has a SHA256 checksum included, but my current fink (0.42.0) does not support it.

Remko

$ fink list fink
Information about 9882 packages read in 1 seconds.
(i)  fink                                 0.43.0-121                  Open-source software package manager
    fink-buildenv-modules                0.1.7-1                     Script for getting common buildtime values
i   fink-mirrors                         0.41.1.1-1                  Mirror infrastructure
    fink-obsolete-packages               0.1-1                       Base package for obsolete packages
    fink-octave-scripts                  0.4.0-1                     Convenience scripts for Octave add-ons
    fink-package-precedence              0.34-1                      Check fink masking of system libs

$ fink update-all
Information about 9882 packages read in 1 seconds.
The following 7 packages will be installed or updated:
fink libbrotli1-shlibs libcurl4 libcurl4-shlibs libnghttp2.14-shlibs libpcre1 libpcre1-shlibs
Failed: unable to load checksum plugin (SHA256): unable to find sha256 implementation. Try installing md5deep or coreutils
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