他のアーキテクチャにlibc6をインストールするとarmhfで機能しないのはなぜですか？

i386が有効な64ビットシステムでクロスコンパイルを試みています。

$ dpkg --print-architecture
amd64
$ dpkg --print-foreign-architectures
i386
armhf

jessieリポジトリのみを有効にします。

$ apt-cache policy libc6:armhf
libc6:armhf:
  Installed: (none)
  Candidate: 2.19-18+deb8u1
  Version table:
     2.19-18+deb8u1 0
        700 http://http.debian.net/debian/ jessie/main armhf Packages

しかし、復号化できない奇妙な衝突（ " libc6:armhf : Breaks: libc6 (!= 2.19-18+deb8u1)"）が発生しました。完全なapt-get出力は次のようになります。

i386 libcはこのシステムで正しく実行されますが、armhfバージョン（armelも含む）は失敗します。このapt-getエラーと回避策についてどう思いますか？

$ apt-get install libc6:armhf パッケージのリストを読み取る... 完了依存関係ツリーの構築
状況情報を読み込む... 完了 一部のパッケージをインストールできません。これは、不可能な状況を要求した場合、または不安定なディストリビューションを使用している場合、一部の必須パッケージがまだ作成されていないか移動されていることを意味します。次の情報は問題を解決するのに役立ちます。

The following packages have unmet dependencies:
 init : PreDepends: systemd-sysv but it is not going to be installed or
                    sysvinit-core but it is not going to be installed or
                    upstart
 libc6 : Breaks: libc6:armhf (!= 2.19-19) but 2.19-18+deb8u1 is to be installed
 libc6:armhf : Breaks: libc6 (!= 2.19-18+deb8u1) but 2.19-19 is to be installed
 libcurl3-gnutls : Depends: libgnutls-deb0-28 (>= 3.3.0) but it is not going to be installed
                   Depends: libldap-2.4-2 (>= 2.4.7) but it is not going to be installed
                   Depends: librtmp1 (>= 2.4+20131018.git79459a2-3~) but it is not going to be installed
                   Depends: libssh2-1 (>= 1.2.6) but it is not going to be installed
                   Recommends: ca-certificates but it is not going to be installed
 libqt5core5a : Depends: libglib2.0-0 (>= 2.22.0) but it is not going to be installed
                Depends: libicu52 (>= 52~m1-1~) but it is not going to be installed
 libqt5gui5 : Depends: fontconfig
              Depends: libegl1-mesa (>= 7.8.1) but it is not going to be installed or
                       libegl1-x11
              Depends: libfontconfig1 (>= 2.11) but it is not going to be installed
              Depends: libgbm1 (>= 8.1~0) but it is not going to be installed
              Depends: libgl1-mesa-glx but it is not going to be installed or
                       libgl1
              Depends: libglib2.0-0 (>= 2.12.0) but it is not going to be installed
              Depends: libgtk2.0-0 (>= 2.24.0) but it is not going to be installed
              Depends: libharfbuzz0b (>= 0.9.11) but it is not going to be installed
              Depends: libice6 (>= 1:1.0.0) but it is not going to be installed
              Depends: libpango-1.0-0 (>= 1.14.0) but it is not going to be installed
              Depends: libsm6 but it is not going to be installed
              Depends: libx11-6 but it is not going to be installed
              Depends: libx11-xcb1 but it is not going to be installed
              Depends: libxcb-glx0 but it is not going to be installed
              Depends: libxcb-icccm4 (>= 0.4.1) but it is not going to be installed
              Depends: libxcb-image0 (>= 0.2.1) but it is not going to be installed
              Depends: libxcb-keysyms1 (>= 0.4.0) but it is not going to be installed
              Depends: libxcb-randr0 (>= 1.3) but it is not going to be installed
              Depends: libxcb-render-util0 but it is not going to be installed
              Depends: libxcb-render0 but it is not going to be installed
              Depends: libxcb-shape0 but it is not going to be installed
              Depends: libxcb-shm0 but it is not going to be installed
              Depends: libxcb-sync1 but it is not going to be installed
              Depends: libxcb-xfixes0 but it is not going to be installed
              Depends: libxcb-xkb1 but it is not going to be installed
              Depends: libxcb1 but it is not going to be installed
              Depends: libxi6 (>= 2:1.2.99.4) but it is not going to be installed
              Depends: libxkbcommon-x11-0 (>= 0.4.0) but it is not going to be installed
              Depends: libxrender1 but it is not going to be installed
 libqt5widgets5 : Depends: libglib2.0-0 (>= 2.12.0) but it is not going to be installed
                  Depends: libx11-6 but it is not going to be installed
 libssl1.0.0 : Depends: debconf (>= 0.5) but it is not going to be installed or
                        debconf-2.0
 live-config-sysvinit : Depends: sysvinit-core but it is not going to be installed or
                                 sysvinit (< 2.88dsf-44) but it is not going to be installed
 nginx-common : Depends: init-system-helpers (>= 1.18~) but it is not going to be installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.