Hi Konrad, thanks for the precise error report.
On Mon, 30 Jul 2018 18:16:54 +0200 Konrad Hinsen <konrad.hin...@fastmail.net> wrote: > Dear Guix experts, > > When updating my Guix installation after three weeks of absence, I > noticed a build failure: > > $ guix pull –commit=de596e99549d7764f370ab2ed3b756f620b1f23d > $ guix build racket Could it be the case that in your `guix build ...` you are not using the guix you pulled? What does `guix --version` say? Where does `which guix` point to? It should point to ~/.config/guix/current/bin/guix I suspect you have an older version of Guix (i.e. "before the new implementation") in your $PATH with a higher precedence (more to the beginning of the $PATH variable). See what `echo $PATH` says. If that is the case, adapt your path. HTH, Björn
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