debrebuild

DEBREBUILD(1)                    User Commands                   DEBREBUILD(1)

NAME
       debrebuild  -  use a buildinfo file and snapshot.d.o to recreate binary
       packages

SYNOPSIS
       debrebuild [options] <buildinfo>

DESCRIPTION
              debrebuild <--help|-h>

       Given a buildinfo file from a Debian package, generate instructions for
       attempting  to  reproduce the binary packages built from the associated
       source and build information.

OPTIONS
       --help, -h
              Show this help and exit

       --[no-]use-tor-proxy
              Whether to fetch resources via tor (socks://127.0.0.1:9050)  As-
              sumes "apt-transport-tor" is installed both in host + chroot

       --[no-]respect-build-path
              Whether  to  setup the build to use the Build-Path from the pro-
              vided .buildinfo file.

       --buildresults
              Directory for the build artifacts (default: ./)

       --builder=BUILDER
              Which building software should  be  used.  Possible  values  are
              none,  sbuild,  mmdebstrap, dpkg and sbuild+unshare. The default
              is none. See section BUILDER for details.

       Note: debrebuild can parse buildinfo files with and without a GPG  sig-
       nature.  However, the signature (if present) is discarded as debrebuild
       does not support verifying it.  If the authenticity or integrity of the
       buildinfo  files  are  important to you, checking these need to be done
       before invoking debrebuild, for example by using dscverify.

       EXAMPLES

              $  debrebuild  --buildresults=./artifacts   --builder=mmdebstrap
              hello_2.10-2_amd64.buildinfo

       BUILDERS

       debrebuild can use different backends to perform the actual package re-
       build.  The desired backend is chosen using the --builder  option.  The
       default is "none".

       none   Dry-run mode. No build is performed.

       sbuild Use  sbuild  to  build  the  package. This requires sbuild to be
              setup with schroot chroots of Debian stable distributions.

       mmdebstrap
              Use mmdebstrap to build the package. This requires no setup  and
              no superuser privileges.

       dpkg   Directly run apt-get and dpkg-buildpackage on the current system
              without chroot. This requires root privileges.

       sbuild+unshare
              Use sbuild with the unshare backend. This will create the chroot
              and  perform  the build without superuser privileges and without
              any setup.

       UNSHARE

       Before kernel 5.10.1 or before Debian 11 (Bullseye), unprivileged  user
       namespaces  were  disabled in Debian for security reasons. Refer to De-
       bian bug #898446 for details. To enable user namespaces, run:

              $ sudo sysctl -w kernel.unprivileged_userns_clone=1

       The sbuild+unshare builder requires and the mmdebstrap builder benefits
       from  having unprivileged user namespaces activated. On Ubuntu they are
       enabled by default.

       LIMITATIONS

       Currently, the code assumes that all packages were at some  point  part
       of  Debian  unstable  main.  This fails for packages from Debian ports,
       packages from experimental as well as for  locally  built  packages  or
       packages  from  third  party  repositories. Enabling support for Debian
       ports and experimental is conceptually possible and only needs somebody
       implementing it.

debrebuild 2.22.1ubuntu1         January 2022                    DEBREBUILD(1)