我正在嘗試安裝 qtcreator 或任何其他 qt 開發包，但由於包損壞而無法工作。然後我嘗試從 qt 網站手動安裝 qtcreator 但由於此錯誤我無法編譯任何內容cannot find -lGL。
然後我嘗試安裝 libgl1-mesa-dev 並得到與安裝 qtcreator 時相同的錯誤：
> sudo apt-get install libgl1-mesa-dev
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:
libgl1-mesa-dev : Depends: mesa-common-dev (= 13.0.6-1+b2) but it is not going to be installed
Depends: libdrm-dev (>= 2.4.69) but it is not going to be installed
Depends: libxcb-dri3-dev but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
這可能與我的sources.list有關，我添加了這個：
deb http://ftp.fr.debian.org/debian testing main non-free contrib
deb-src http://ftp.fr.debian.org/debian testing main non-free contrib
我使用的是 debian 9.9 stable，我使用安裝了一些軟體包sudo apt-get -t testing install <package>
我破壞了我的系統嗎？有辦法修復它還是我應該重新安裝它？
答案1
我破壞了我的系統嗎？
是的。
有辦法修復它還是我應該重新安裝它？
是的，刪除測試來源，然後按照 debian wiki 上描述的說明進行操作：系統降級和如何從「測試」回到「穩定」—核心降級
該軟體qtcreator在 debianstretch 上可用，您可以透過以下方式安裝它：
apt install qtcreator