Hi, I can reproduce this: --8<---------------cut here---------------start------------->8--- [rwurmus@bimsb-sys02.mdc-berlin.net:~/code/guix] (1005) $ ~/.config/guix/current/bin/guix pull Updating channel 'guix' from Git repository at 'https://git.savannah.gnu.org/git/guix.git'... Building from this channel: guix https://git.savannah.gnu.org/git/guix.git cd5d5f5 Computing Guix derivation for 'x86_64-linux'... ice-9/psyntax.scm:1585:32: In procedure expand-macro: Syntax error: unknown location: %origin: extraneous field initializers (sha256) in form (%origin (method url-fetch) (uri (string-append "mirror://gnu/bash/bash-" version ".tar.gz")) (sha256 (base32 "0kgvfwqdcd90waczf4gx39xnrxzijhjrzyzv7s8v4w31qqm0za5l")) (patch-flags (quote ("-p0"))) (patches (cons (search-patch "bash-linux-pgrp-pipe.patch") %patch-series-5.0))) -guix pull: error: You found a bug: the program '/gnu/store/fsch1y8hilmkg21rmgk256j3wfi2w7wk-compute-guix-derivation' failed to compute the derivation for Guix (version: "cd5d5f53228fd5bf96d9f790aa2606ae71fa68d7"; system: "x86_64-linux"; host version: "be0ecfb1787b9e6954bf745bceeb1b9d2669d51a"; pull-version: 1). Please report it by email to . [rwurmus@bimsb-sys02.mdc-berlin.net:~/code/guix] (1006) $ ~/.config/guix/current/bin/guix describe Generation 8 Apr 15 2020 10:05:07 (current) guix-bimsb 78833aa repository URL: https://github.com/BIMSBbioinfo/guix-bimsb branch: master commit: 78833aa4c89fb317cdd67f17ff27111228d870a9 … guix be0ecfb repository URL: https://git.savannah.gnu.org/git/guix.git branch: master commit: be0ecfb1787b9e6954bf745bceeb1b9d2669d51a --8<---------------cut here---------------end--------------->8--- It seems to be related to the commits between c7d2dd69004b020de5d86898d2497ab3c8435c37 and 1ad5209d904d471ded6cf53b4e29b64e963dea3f. I’m trying this now as a work-around: ~/.config/guix/current/bin/guix pull --commit=1ad5209d904d471ded6cf53b4e29b64e963dea3f -- Ricardo