debootsnap - create debian chroot using snapshot.debian.org
usage: debootsnap [-h] [--architecture ARCHITECTURE]
[--ignore-notfound]
- [--cache CACHE] [--port PORT] [--nocache] (--buildinfo BUILDINFO |
--packages PACKAGES) [--sources-list-only] [output]
Combines debootstrap and snapshot.debian.org to create a chroot
tarball with exact package versions from the past either to reproduce bugs
or to test source package reproducibility.
To obtain a list of packages run the following command on one
machine:
- $ dpkg-query --showformat
'${binary:Package}=${Version}\n' --show
And pass the output to debootsnap with the --packages
argument. The result will be a chroot tarball with precisely the package
versions as they were found on the system that ran dpkg-query.
- output
- path to output chroot tarball
- -h, --help
- show this help message and exit
- --architecture,
--nativearch ARCHITECTURE
- native architecture of the chroot. Ignored if --buildinfo is used.
Foreign architectures are inferred from the package list. Not required if
packages are architecture qualified.
- --ignore-notfound
- only warn about packages that cannot be found on snapshot.debian.org
instead of exiting
- --cache
CACHE
- cache directory -- by default $TMPDIR is used
- --port PORT
- manually choose port number for the apt cache instead of automatically
choosing a free port
- --nocache
- disable cache
- --buildinfo
BUILDINFO
- use packages from a buildinfo file. Read buildinfo file from standard
input if value is "-".
- --packages,
--pkgs PACKAGES
- list of packages, optional architecture and version, separated by comma or
linebreak. Read list from standard input if value is "-". Read
list from a file if value starts with "./" or "/". The
option can be specified multiple times. Package name, version and
architecture are separated by one or more characters that are not legal in
the respective adjacent field. Leading and trailing illegal characters are
allowed. Example: pkg1:arch=ver1,pkg2:arch=ver2
- --sources-list-only
- only query metasnap.debian.net and print the sources.list needed to create
chroot and exit
On one system run:
- $ dpkg-query --showformat
'${binary:Package}=${Version}\n' --show > pkglist
Then copy over "pkglist" and on another system run:
- $ debootsnap --pkgs=./pkglist >
./chroot.tar
Or use a buildinfo file as input:
- $ debootsnap --buildinfo=./package.buildinfo >
./chroot.tar
A tarball of a chroot with precisely the requested package
versions then be found in the file `./chroot.tar`.