Hi Tomas, Thanks for your reply!
> I think the relevant part is whether some certificate package is installed > (via > propagated inputs) or not. If I explicitly add nss-certs to the command > above, > it starts to work: Sorry, I forgot to add that I always have nss-certs among my packages when I try this symlink. Otherwise I get an error message as well. > Could you please share some examples where you get no error, but it has no > effect? Maybe they really are bugs (and should be reported). Here is my most recent experiment: $ guix time-machine --url=https://codeberg.org/khinsen/guix.git --commit=615023ddc9407f27ec7c04060fb520a4cbb3b03f --disable-authentication -- pack -S /etc/ssl=etc/ssl -S /etc/protocols=etc/protocols --format=squashfs --save-provenance snakemake bash git git-annex coreutils wget python nss-certs net-base guix time-machine: warning: channel authentication disabled guix pack: warning: ambiguous package specification `python' guix pack: warning: choosing python@3.10.7 from gnu/packages/python.scm:610:2 /gnu/store/psq0bqcsnbk7p5w1m2771mlilyikicp6-snakemake-bash-git-git-annex-coreutils-squashfs-pack.gz.squashfs $ singularity exec /gnu/store/psq0bqcsnbk7p5w1m2771mlilyikicp6-snakemake-bash-git-git-annex-coreutils-squashfs-pack.gz.squashfs bash WARNING: passwd file doesn't exist in container, not updating WARNING: group file doesn't exist in container, not updating Singularity> ls /etc hosts localtime resolv.conf Singularity> exit Neither /etc/ssl nor /etc/protocols are present in the container. On the other hand, the same packages exported for Docker: $ guix time-machine --url=https://codeberg.org/khinsen/guix.git --commit=615023ddc9407f27ec7c04060fb520a4cbb3b03f --disable-authentication -- pack -S /etc/ssl=etc/ssl -S /etc/protocols=etc/protocols --format=docker --save-provenance snakemake bash git git-annex coreutils wget python nss-certs net-base guix time-machine: warning: channel authentication disabled guix pack: warning: ambiguous package specification `python' guix pack: warning: choosing python@3.10.7 from gnu/packages/python.scm:432:2 /gnu/store/90ylyh60vvi2inqg9i8wlcfbv8m2px89-snakemake-bash-git-git-annex-coreutils-docker-pack.tar.gz $ docker load -i /gnu/store/90ylyh60vvi2inqg9i8wlcfbv8m2px89-snakemake-bash-git-git-annex-coreutils-docker-pack.tar.gz Loaded image: snakemake-bash-git-git-annex-coreutils:latest $ docker run -it snakemake-bash-git-git-annex-coreutils:latest bash bash-5.1# ls /etc ls /etc hostname hosts mtab protocols resolv.conf ssl Both links are present. Finally, "guix shell" now works (I hadn't tried for a few months): $ guix time-machine --url=https://codeberg.org/khinsen/guix.git --commit=615023ddc9407f27ec7c04060fb520a4cbb3b03f --disable-authentication -- shell -C -N -S /etc/ssl=etc/ssl -S /etc/protocols=etc/protocols snakemake bash git git-annex coreutils wget python nss-certs net-base guix time-machine: warning: channel authentication disabled guix shell: warning: ambiguous package specification `python' guix shell: warning: choosing python@3.10.7 from gnu/packages/python.scm:432:2 [env]$ ls /etc group hosts nsswitch.conf passwd protocols resolv.conf services ssl For this example, the only failure is for "pack –format=squashfs". But the very same command line applied to a different commit (a few weeks earlier) worked fine. In case you wonder why I use a personal fork of Guix: For Singularity export to be usable, I need a patch that is on core-updates (https://git.savannah.gnu.org/cgit/guix.git/commit/?h=core-updates&id=d8875d76555faf1a11f6838312bfe4b7f6121d2c). In the meantime, I added a graft version of this patch to my personal fork. Finally, I cleaned up the output of the above commands by removing the usual messages from the build process, keeping only the messages that are specific to my example. Cheers, Konrad.
