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この奇妙なapt-cacheの状態を考えると、git-svnをどのようにインストールしますか?

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この奇妙なapt-cacheの状態を考えると、git-svnをどのようにインストールしますか?

このapt-getエラーと奇妙に見えるapt-cacheの状態を考慮して、git-svnをどのようにインストールしますか?

$ sudo apt-get install git-svn
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 git-svn : Depends: git (< 1:1.7.10.4-.)
E: Unable to correct problems, you have held broken packages.

apt-cache showpkg 出力:

$ apt-cache showpkg git-svn
Package: git-svn
Versions: 
1:1.9.1-1~bpo70+2 (/var/lib/apt/lists/ftp.debian.org_debian_dists_wheezy-backports_main_binary-amd64_Packages)
 Description Language: 
                 File: /var/lib/apt/lists/http.us.debian.org_debian_dists_wheezy_main_binary-amd64_Packages
                  MD5: fe9279673cf6573640700aabf410ef25
 Description Language: en
                 File: /var/lib/apt/lists/http.us.debian.org_debian_dists_wheezy_main_i18n_Translation-en
                  MD5: fe9279673cf6573640700aabf410ef25

1:1.7.10.4-1+wheezy1 (/var/lib/apt/lists/http.us.debian.org_debian_dists_wheezy_main_binary-amd64_Packages)
 Description Language: 
                 File: /var/lib/apt/lists/http.us.debian.org_debian_dists_wheezy_main_binary-amd64_Packages
                  MD5: fe9279673cf6573640700aabf410ef25
 Description Language: en
                 File: /var/lib/apt/lists/http.us.debian.org_debian_dists_wheezy_main_i18n_Translation-en
                  MD5: fe9279673cf6573640700aabf410ef25


Reverse Depends: 
  git-doc,git-svn
  git-doc,git-svn
  git-all,git-svn
  git,git-svn
  moap,git-svn
  git-doc,git-svn
  git-all,git-svn
  git,git-svn
Dependencies: 
1:1.9.1-1~bpo70+2 - git (4 1:1.9.1) git (3 1:1.9.1-.) libsvn-perl (0 (null)) libyaml-perl (0 (null)) libterm-readkey-perl (0 (null)) git-doc (0 (null)) subversion (0 (null)) git (3 1:1.8.3~rc1-1.) git:i386 (3 1:1.8.3~rc1-1.) git (3 1:1.8.3~rc1-1.) git:i386 (3 1:1.8.3~rc1-1.) 
1:1.7.10.4-1+wheezy1 - git (4 1:1.7.10.4) git (3 1:1.7.10.4-.) libsvn-perl (16 (null)) libsvn-core-perl (0 (null)) libyaml-perl (0 (null)) libwww-perl (0 (null)) libterm-readkey-perl (0 (null)) git-doc (0 (null)) subversion (0 (null)) cogito (3 0.16rc2-0) cogito:i386 (3 0.16rc2-0) 
Provides: 
1:1.9.1-1~bpo70+2 - git-svn:i386 
1:1.7.10.4-1+wheezy1 - 
Reverse Provides:

シナプティックからgit-svnのプロパティページを取得すると、同じバージョンのgit（1：1.7.10.4）に対して「<」と「>」が表示されるようです。

これが私の唯一のDebianではないので、lsb-releaseをチェックする必要があります。

$ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux 8.2 (jessie)
Release:    8.2
Codename:   jessie

これは適切なキャッシュ戦略gitです。

$ apt-cache policy git
git:
  Installed: 1:1.9.1-1~bpo70+2
  Candidate: 1:1.9.1-1~bpo70+2
  Version table:
 *** 1:1.9.1-1~bpo70+2 0
        100 http://ftp.debian.org/debian/ wheezy-backports/main amd64 Packages
        100 /var/lib/dpkg/status
     1:1.7.10.4-1+wheezy1 0
        500 http://http.us.debian.org/debian/ wheezy/main amd64 Packages

これは適切なキャッシュ戦略git-svnです。

$ apt-cache policy git-svn
git-svn:
  Installed: (none)
  Candidate: 1:1.7.10.4-1+wheezy1
  Version table:
     1:1.9.1-1~bpo70+2 0
        100 http://ftp.debian.org/debian/ wheezy-backports/main amd64 Packages
     1:1.7.10.4-1+wheezy1 0
        500 http://http.us.debian.org/debian/ wheezy/main amd64 Packages

上記のlsb-releaseには「jessie」が表示されますが、resources.listは「wheezy」のみを参照します。 「apt-cacheポリシー」には「wheezy」への参照は68個ありますが、「jessie」への参照はありません。

リクエストに応じて apt-get install -st:

apt-get install -st wheezy-backports git-svn
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following NEW packages will be installed:
  git-svn
0 upgraded, 1 newly installed, 0 to remove and 181 not upgraded.
Inst git-svn (1:1.9.1-1~bpo70+2 Debian Backports:/wheezy-backports [all])
Conf git-svn (1:1.9.1-1~bpo70+2 Debian Backports:/wheezy-backports [all])

リクエストに応じて apt-cache ポリシー lsb-release:

apt-cache policy lsb-release 
lsb-release:
  Installed: 4.1+Debian13+nmu1
  Candidate: 4.1+Debian13+nmu1
  Version table:
 *** 4.1+Debian13+nmu1 0
        100 /var/lib/dpkg/status
     4.1+Debian8+deb7u1 0
        500 http://http.us.debian.org/debian/ wheezy/main amd64 Packages

適切なキャッシュポリシー（すべて）

Package files:
 100 /var/lib/dpkg/status
     release a=now
 500 http://security.debian.org/ wheezy/updates/non-free Translation-en
 500 http://security.debian.org/ wheezy/updates/main Translation-en
 500 http://security.debian.org/ wheezy/updates/contrib Translation-en
 500 http://security.debian.org/ wheezy/updates/non-free i386 Packages
     release v=7.0,o=Debian,a=oldstable,n=wheezy,l=Debian-Security,c=non-free
     origin security.debian.org
 500 http://security.debian.org/ wheezy/updates/contrib i386 Packages
     release v=7.0,o=Debian,a=oldstable,n=wheezy,l=Debian-Security,c=contrib
     origin security.debian.org
 500 http://security.debian.org/ wheezy/updates/main i386 Packages
     release v=7.0,o=Debian,a=oldstable,n=wheezy,l=Debian-Security,c=main
     origin security.debian.org
 500 http://security.debian.org/ wheezy/updates/non-free amd64 Packages
     release v=7.0,o=Debian,a=oldstable,n=wheezy,l=Debian-Security,c=non-free
     origin security.debian.org
 500 http://security.debian.org/ wheezy/updates/contrib amd64 Packages
     release v=7.0,o=Debian,a=oldstable,n=wheezy,l=Debian-Security,c=contrib
     origin security.debian.org
 500 http://security.debian.org/ wheezy/updates/main amd64 Packages
     release v=7.0,o=Debian,a=oldstable,n=wheezy,l=Debian-Security,c=main
     origin security.debian.org
 500 http://ftp.debian.org/debian/ wheezy-backports/non-free Translation-en
 500 http://ftp.debian.org/debian/ wheezy-backports/main Translation-en
 500 http://ftp.debian.org/debian/ wheezy-backports/contrib Translation-en
 100 http://ftp.debian.org/debian/ wheezy-backports/non-free i386 Packages
     release v=,o=Debian Backports,a=wheezy-backports,n=wheezy-backports,l=Debian Backports,c=non-free
     origin ftp.debian.org
 100 http://ftp.debian.org/debian/ wheezy-backports/contrib i386 Packages
     release v=,o=Debian Backports,a=wheezy-backports,n=wheezy-backports,l=Debian Backports,c=contrib
     origin ftp.debian.org
 100 http://ftp.debian.org/debian/ wheezy-backports/main i386 Packages
     release v=,o=Debian Backports,a=wheezy-backports,n=wheezy-backports,l=Debian Backports,c=main
     origin ftp.debian.org
 100 http://ftp.debian.org/debian/ wheezy-backports/non-free amd64 Packages
     release v=,o=Debian Backports,a=wheezy-backports,n=wheezy-backports,l=Debian Backports,c=non-free
     origin ftp.debian.org
 100 http://ftp.debian.org/debian/ wheezy-backports/contrib amd64 Packages
     release v=,o=Debian Backports,a=wheezy-backports,n=wheezy-backports,l=Debian Backports,c=contrib
     origin ftp.debian.org
 100 http://ftp.debian.org/debian/ wheezy-backports/main amd64 Packages
     release v=,o=Debian Backports,a=wheezy-backports,n=wheezy-backports,l=Debian Backports,c=main
     origin ftp.debian.org
 500 http://download.virtualbox.org/virtualbox/debian/ wheezy/non-free i386 Packages
     release o=Oracle Corporation,n=wheezy,l=Oracle Corporation,c=non-free
     origin download.virtualbox.org
 500 http://download.virtualbox.org/virtualbox/debian/ wheezy/contrib i386 Packages
     release o=Oracle Corporation,n=wheezy,l=Oracle Corporation,c=contrib
     origin download.virtualbox.org
 500 http://download.virtualbox.org/virtualbox/debian/ wheezy/non-free amd64 Packages
     release o=Oracle Corporation,n=wheezy,l=Oracle Corporation,c=non-free
     origin download.virtualbox.org
 500 http://download.virtualbox.org/virtualbox/debian/ wheezy/contrib amd64 Packages
     release o=Oracle Corporation,n=wheezy,l=Oracle Corporation,c=contrib
     origin download.virtualbox.org
 500 http://ftp.us.debian.org/debian/ wheezy-updates/non-free Translation-en
 500 http://ftp.us.debian.org/debian/ wheezy-updates/main Translation-en
 500 http://ftp.us.debian.org/debian/ wheezy-updates/contrib Translation-en
 500 http://ftp.us.debian.org/debian/ wheezy-updates/non-free i386 Packages
     release o=Debian,a=oldstable-updates,n=wheezy-updates,l=Debian,c=non-free
     origin ftp.us.debian.org
 500 http://ftp.us.debian.org/debian/ wheezy-updates/contrib i386 Packages
     release o=Debian,a=oldstable-updates,n=wheezy-updates,l=Debian,c=contrib
     origin ftp.us.debian.org
 500 http://ftp.us.debian.org/debian/ wheezy-updates/main i386 Packages
     release o=Debian,a=oldstable-updates,n=wheezy-updates,l=Debian,c=main
     origin ftp.us.debian.org
 500 http://ftp.us.debian.org/debian/ wheezy-updates/non-free amd64 Packages
     release o=Debian,a=oldstable-updates,n=wheezy-updates,l=Debian,c=non-free
     origin ftp.us.debian.org
 500 http://ftp.us.debian.org/debian/ wheezy-updates/contrib amd64 Packages
     release o=Debian,a=oldstable-updates,n=wheezy-updates,l=Debian,c=contrib
     origin ftp.us.debian.org
 500 http://ftp.us.debian.org/debian/ wheezy-updates/main amd64 Packages
     release o=Debian,a=oldstable-updates,n=wheezy-updates,l=Debian,c=main
     origin ftp.us.debian.org
 500 http://http.us.debian.org/debian/ wheezy/non-free Translation-en
 500 http://http.us.debian.org/debian/ wheezy/main Translation-en
 500 http://http.us.debian.org/debian/ wheezy/contrib Translation-en
 500 http://http.us.debian.org/debian/ wheezy/non-free i386 Packages
     release v=7.9,o=Debian,a=oldstable,n=wheezy,l=Debian,c=non-free
     origin http.us.debian.org
 500 http://http.us.debian.org/debian/ wheezy/contrib i386 Packages
     release v=7.9,o=Debian,a=oldstable,n=wheezy,l=Debian,c=contrib
     origin http.us.debian.org
 500 http://http.us.debian.org/debian/ wheezy/main i386 Packages
     release v=7.9,o=Debian,a=oldstable,n=wheezy,l=Debian,c=main
     origin http.us.debian.org
 500 http://http.us.debian.org/debian/ wheezy/non-free amd64 Packages
     release v=7.9,o=Debian,a=oldstable,n=wheezy,l=Debian,c=non-free
     origin http.us.debian.org
 500 http://http.us.debian.org/debian/ wheezy/contrib amd64 Packages
     release v=7.9,o=Debian,a=oldstable,n=wheezy,l=Debian,c=contrib
     origin http.us.debian.org
 500 http://http.us.debian.org/debian/ wheezy/main amd64 Packages
     release v=7.9,o=Debian,a=oldstable,n=wheezy,l=Debian,c=main
     origin http.us.debian.org
Pinned packages:

答え1

注文する

apt-get install -t wheezy-backports git-svn

インストールする必要がありますgit-svn。

-t以下のフラグの説明を参照してくださいman apt-get。

 -t, --target-release, --default-release
 This option controls the default input to the policy engine; 
 it creates a default pin at priority 990 using the specified
 release string. This overrides the general settings in 
 /etc/apt/preferences. Specifically pinned packages are not 
 affected by the value of this option. In short, this option 
 lets you have simple control over which distribution 
 packages will be retrieved from. Some common examples
 might be -t '2.1*', -t unstable or -t sid. Configuration 
 Item: APT::Default-Release; see also the apt_preferences(5)
 manual page.

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