Hi Pierre, On Fri, 19 Mar 2021 at 11:25, Pierre Neidhardt wrote: > --8<---------------cut here---------------start------------->8--- > $ guix pull [...] > @ substituter-succeeded /gnu/store/1nxd28y29f0ksmbplbrshkc71bky2g8n-gnutls-3.6.15-debug > substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0% > substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0% > @ substituter-started /gnu/store/d2c09h0xxlmql98yd989hibi347arwqv-libtiff-4.2.0-doc substitute > guix substitute: error: host name lookup error: Name or service not known > @ substituter-failed /gnu/store/d2c09h0xxlmql98yd989hibi347arwqv-libtiff-4.2.0-doc fetching path `/gnu/store/d2c09h0xxlmql98yd989hibi347arwqv-libtiff-4.2.0-doc' (empty status: '') > Backtrace: > 11 (primitive-load "/gnu/store/h0lkna6hicpsdxx9sxgapqpy2p1y9azw-compute-guix-derivation") > In ice-9/eval.scm: > 155:9 10 (_ _) > 159:9 9 (_ #(#(#(#(#(#(#(#(#(#(#(#(#(# ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?)) > In ./guix/store.scm: > 2066:24 8 (run-with-store # _ #:guile-for-build _ #:system _ #:target _) > 1900:8 7 (_ _) > In ./guix/gexp.scm: > 256:18 6 (_ _) > 1136:2 5 (_ _) > 1002:2 4 (_ _) > 849:4 3 (_ _) > In ./guix/store.scm: > 1948:12 2 (_ #) > 1362:5 1 (map/accumulate-builds # _ _) > 1373:15 0 (_ # _ _) > > ./guix/store.scm:1373:15: ERROR: > 1. &store-protocol-error: > message: "some substitutes for the outputs of derivation `/gnu/store/plq0nz84mannv87aiip646vr2a1z7mb1-libtiff-4.2.0.drv' failed (usually happens due to networking issues); try `--fallback' to build derivation from source " > status: 1 > guix pull: error: You found a bug: the program '/gnu/store/h0lkna6hicpsdxx9sxgapqpy2p1y9azw-compute-guix-derivation' > failed to compute the derivation for Guix (version: "1155a88308df7649fe74bd5bb8279a4d103ce386"; system: "x86_64-linux"; > host version: "5fa4814b4f12b82a7a7747bfacfb45b0348eae1e"; pull-version: 1). > Please report it by email to . > --8<---------------cut here---------------end--------------->8--- The similar command: guix machine --commit=5fa4814b4f12b82a7a7747bfacfb45b0348eae1e \ -- time-machine --commit=1155a88308df7649fe74bd5bb8279a4d103ce386 \ -- help works for me. It looks like a transient network issue. I agree it is annoying. First, it should automatically fallback. And in any case, it should not raise this ugly backtrace. Cheers, simon