[pacman-dev] [PATCH] makepkg: do not save fflags when creating packages
eschwartz at archlinux.org
Tue Oct 8 02:48:44 UTC 2019
On 10/7/19 10:34 PM, Allan McRae wrote:
> On 8/10/19 7:18 am, Eli Schwartz wrote:
>> This breaks reproducible builds due to encoding information specific to
>> the filesystem which was used to build the package, information which we
>> are never interested in for packaging purposes anyway.
>> It also means that attempting to extract a package file as root (or
>> fakeroot) might result in angry warnings being printed to the console by
>> bsdtar, followed by a non-zero exit code, unless the user remembers to
>> use --no-fflags during extraction. This is unpleasant UI, even if pacman
>> itself won't care about these.
> What warnings? How would I replicate those warnings? I am currently
> not seeing any...
An example package is the current pacman-contrib-1.2.0-2 package in
[community] -- it has the nocow attribute, because it must have been
built on a CoW-supporting filesystem.
Try extracting it using `sudo bsdtar` or `fakeroot bsdtar`, and if the
filesystem you extract it to is NOT a CoW-supporting filesystem it will
For example, it worked for me originally, because my rootfs is a BTRFS
filesystem and I extracted it to a subdirectory of $HOME, but, when I
repeated the experiment in /tmp, I got the complaints.
Bug Wrangler and Trusted User
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