Glad to have contributed :) ________________________________________ From: Ludovic Courtès <[email protected]> Sent: Friday, March 13, 2020 12:38 PM To: Josh Marshall Cc: [email protected] Subject: Re: [EXTERNAL]Re: Modifying squashfs usage for `guix pack` for supporting singularity
Hi Josh, Josh Marshall <[email protected]> skribis: > While the images seem to work well in most cases, removing ways for bits to > change seems to be in the spirit of guix, and so the "-all-time" and > "-mkfs-time" options remove one source of change. Additionally, without the > "--no-recovery" an extra file is made which is not useful to the process, and > for my manual testing seemed to cause write or permission issues which could > cause failures. Guix already handles the failure cases in mksquashfs which > the recovery file is for and so the redundant work is not helpful, can cause > problems, slows down the process, and requires more resources. Oh, I hadn’t understood that there were reproducibility issues with ‘guix pack -f squashfs’, sorry about that! Commits 24fb0dc0ab34ebb49509a3d5b4d84d8488670807 and b829864d747b3b24ef37cafe36e889527b060d4d implement what you suggest. I can confirm that now something like: guix pack -f squashfs sed --rounds=2 passes, which was not the case before. Thanks! > As for the information given by `guix pack --list-formats`, I'd change to > something like the following: > > ``` > tarball Self-contained tarball, ready to run directly on any Linux > machine > squashfs Container suitable for Singularity 2.x and 3.x > OCI OCI compliant tarball ready for 'docker load' and usable by > Singularity 3.x > sif Unsupported; container preferred by Singularity 3.x We cannot change the format name, for compatibility reasons, but I’ll double-check that what ‘-f docker’ produces is indeed OCI, and if so, add it to the description. > For more information, refer to > https://guix.gnu.org/manual/en/html_node/Invoking-guix-pack.html I don’t think we’re going to add references to the manual in --help and similar: it’s always implicit that documentation is in the manual. However, perhaps we could add terminal hyperlinks to make it more discoverable. Thanks, Ludo’. --- The information in this email, including attachments, may be confidential and is intended solely for the addressee(s). If you believe you received this email by mistake, please notify the sender by return email as soon as possible.
