[apt-build-devel] Bug#758856: apt-build: repository error when multiarch is enabled

[apt-build development list]

Package: apt-build
Version: 0.12.44
Severity: important

Dear Maintainer,

When installing apt-build, it automatically adds the repository to
sources.list.d/, but with multiarch apt spits out errors on the repository.
the default entry for apt-build.list is:
deb file:/var/cache/apt-build/repository apt-build main

when modified to:
deb [arch=amd64] file:/var/cache/apt-build/repository apt-build main
this takes care of the errors (amd64 being `dpkg --print-architecture')



-- System Information:
Debian Release: jessie/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.15-10.dmz.1-liquorix-amd64 (SMP w/2 CPU cores; PREEMPT)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages apt-build depends on:
ii  apt                    1.0.6
ii  apt-utils              1.0.6
ii  debconf [debconf-2.0]  1.5.53
ii  devscripts             2.14.6
ii  dpkg                   1.17.13
ii  dpkg-dev               1.17.13
ii  g++                    4:4.9.1-3
ii  gcc                    4:4.9.1-3
ii  libappconfig-perl      1.66-1
ii  libapt-pkg-perl        0.1.29+b2
ii  libc6                  2.19-9
ii  perl                   5.20.0-4

Versions of packages apt-build recommends:
ii  build-essential  11.7
ii  fakeroot         1.20.1-1.1

apt-build suggests no packages.

-- debconf information:
* apt-build/olevel: Medium
* apt-build/build_dir: /var/cache/apt-build/build
  apt-build/arch_alpha: native
* apt-build/make_options: -j3
  apt-build/archtype: native
* apt-build/repository_dir: /var/cache/apt-build/repository
  apt-build/arch_arm: native
* apt-build/options:
* apt-build/arch_amd64: native
  apt-build/arch_amd: native
  apt-build/arch_intel: native
  apt-build/arch_sparc: native
* apt-build/add_to_sourceslist: false