bookworm 安装失败，出现“未满足的依赖项”错误

Question

$ apt install bookworm
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:
 bookworm : Depends: libgranite3 (>= 0.2.0) but it is not installable
E: Unable to correct problems, you have held broken packages.

---

$ apt policy bookworm libgranite3
bookworm:
  Installed: (none)
  Candidate: 0.6-0~42~ubuntu16.04.1
  Version table:
     0.6-0~42~ubuntu16.04.1 500
        500 http://ppa.launchpad.net/bookworm-team/bookworm/ubuntu xenial/main amd64 Packages
libgranite3:
  Installed: (none)
  Candidate: (none)
  Version table:

---

$ lsb_release -sd
Ubuntu 16.04.3 LTS

Answer 1

我联系了ppa:bookworm-team/bookworm背后的开发人员，但显然他不再维护 bookworm 了。相反，他将我指向ppa:bablu-boy/bookworm-daily，该软件在维护状态下可用。

要卸载（痕迹）旧程序并删除有问题的 PPA，请按照下列步骤操作：

• 卸载程序

  sudo apt remove bookworm
  

• 删除旧的 PPA

  sudo add-apt-repository -r ppa:bookworm-team/bookworm
  

要添加新的 PPA 并安装程序，请执行以下操作：

• 添加新的 PPA

  sudo add-apt-repository ppa:bablu-boy/bookworm-daily
  

• 更新包源

  sudo apt update
  

• 安装 bookworm

  sudo apt install bookworm