尝试在Debian上安装ppa包

运行此代码后，使用debian 10 buster在my bash中添加apt存储库ppa:thopiekar/Sierrabree。尝试

sudo apt update

后立即出现以下错误消息：

Hit:1 http://security.debian.org/debian-security buster/updates InRelease
Hit:2 http://deb.debian.org/debian buster InRelease                                                      
Hit:3 http://deb.debian.org/debian buster-updates InRelease                                              
Ign:4 http://dl.google.com/linux/chrome/deb stable InRelease                                             
Hit:5 http://dl.google.com/linux/chrome/deb stable Release                         
Get:7 http://ppa.launchpad.net/thopiekar/sierrabreeze/ubuntu focal InRelease [15.4 kB]
Err:7 http://ppa.launchpad.net/thopiekar/sierrabreeze/ubuntu focal InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D51DB14E9FFECCF3
Reading package lists... Done
W: GPG error: http://ppa.launchpad.net/thopiekar/sierrabreeze/ubuntu focal InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D51DB14E9FFECCF3
E: The repository 'http://ppa.launchpad.net/thopiekar/sierrabreeze/ubuntu focal InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details

编辑

sudo apt安装Sierrabree

：

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:
 sierrabreeze : Depends: libc6 (>= 2.29) but 2.28-10 is to be installed
                Depends: libqt5core5a (>= 5.12.2) but 5.11.3+dfsg1-1+deb10u3 is to be installed
E: Unable to correct problems, you have held broken packages

---

解决此问题有什么帮助吗？

您可以手动安装gpg密钥：

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys D51DB14E9FFECCF3

您还需要编辑

thopiekar ubuntu-sierra.list

文件

sudo nano /etc/apt/sources.list.d/thopiekar-ubuntu-sierrabreeze-focal.list

将焦点更改为仿生：

deb http://ppa.launchpad.net/thopiekar/sierrabreeze/ubuntu bionic main

跑步：

sudo apt update
sudo apt install sierrabreeze

---

非常感谢@GAD3R！现在我可以更新法线了。但是我仍然无法完成安装。Output

sudo apt install sierrabree

@Fgregorio1欢迎光临，您的

/etc/apt/sources.list

包含一些不稳定的存储库。编辑您的

/etc/apt/sources。列出
然后运行
sudo-apt-update和&sudo-apt-upgrade
。