誰かが私に尋ねた。私がGithubに報告した問題、いくつかのパッケージを削除し、パッケージなしでテストしてください。私はこれを安全に行う必要があるという暗黙の要件があると確信しています！
とにかくパッケージ（この場合libicu52とlibssl1.0.0）を削除して後で再インポートする予定でした。これら2つのパッケージはそれぞれ依存関係であり、このパッケージlibpsl0もspotify-client削除されていることがわかりました。予想通り、各再インストールは計画どおりに進行しませんでした。
$ sudo apt install libicu52
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package libicu52 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'libicu52' has no installation candidate
libssl1.0.0依存パッケージにも同様ですlibpsl0。
依存パッケージをインストールしようとすると、spotify-client次のようになります。
$ sudo apt install spotify-client
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:
spotify-client : Depends: libssl1.0.0 but it is not installable
Recommends: libavcodec54 but it is not installable or
libavcodec-extra-54 but it is not installable
Recommends: libavformat54 but it is not installable
E: Unable to correct problems, you have held broken packages.
私の投稿の最後に結果を見ることができますdpkg.log。
2017-12-05 23:30:49 startup packages remove
2017-12-05 23:30:49 status installed libpsl0:amd64 0.5.1-1
2017-12-05 23:30:49 remove libpsl0:amd64 0.5.1-1 <none>
2017-12-05 23:30:49 status half-configured libpsl0:amd64 0.5.1-1
2017-12-05 23:30:49 status half-installed libpsl0:amd64 0.5.1-1
2017-12-05 23:30:49 status config-files libpsl0:amd64 0.5.1-1
2017-12-05 23:30:49 status config-files libpsl0:amd64 0.5.1-1
2017-12-05 23:30:49 status installed libicu52:amd64 52.1-8+deb8u5
2017-12-05 23:30:49 remove libicu52:amd64 52.1-8+deb8u5 <none>
2017-12-05 23:30:49 status half-configured libicu52:amd64 52.1-8+deb8u5
2017-12-05 23:30:49 status half-installed libicu52:amd64 52.1-8+deb8u5
2017-12-05 23:30:49 status config-files libicu52:amd64 52.1-8+deb8u5
2017-12-05 23:30:49 status config-files libicu52:amd64 52.1-8+deb8u5
2017-12-05 23:30:49 startup packages configure
2017-12-05 23:31:01 startup packages remove
2017-12-05 23:31:01 status installed spotify-client:amd64 1:1.0.64.407.g9bd02c2d-26
2017-12-05 23:31:01 remove spotify-client:amd64 1:1.0.64.407.g9bd02c2d-26 <none>
2017-12-05 23:31:01 status half-configured spotify-client:amd64 1:1.0.64.407.g9bd02c2d-26
2017-12-05 23:31:01 status half-installed spotify-client:amd64 1:1.0.64.407.g9bd02c2d-26
2017-12-05 23:31:01 status config-files spotify-client:amd64 1:1.0.64.407.g9bd02c2d-26
2017-12-05 23:31:01 status config-files spotify-client:amd64 1:1.0.64.407.g9bd02c2d-26
2017-12-05 23:31:01 status config-files spotify-client:amd64 1:1.0.64.407.g9bd02c2d-26
2017-12-05 23:31:01 status not-installed spotify-client:amd64 <none>
2017-12-05 23:31:01 status installed libssl1.0.0:amd64 1.0.1t-1+deb8u7
2017-12-05 23:31:01 remove libssl1.0.0:amd64 1.0.1t-1+deb8u7 <none>
2017-12-05 23:31:01 status half-configured libssl1.0.0:amd64 1.0.1t-1+deb8u7
2017-12-05 23:31:01 status half-installed libssl1.0.0:amd64 1.0.1t-1+deb8u7
2017-12-05 23:31:01 status config-files libssl1.0.0:amd64 1.0.1t-1+deb8u7
2017-12-05 23:31:01 status config-files libssl1.0.0:amd64 1.0.1t-1+deb8u7
2017-12-05 23:31:02 startup packages configure
心配すべきでしょうか？私のパッケージを検索する必要がありますか？どうすればいいですか？