apt-get安装失败 E: Unable to correct problems, you have held broken packages.

• Use aptitude command instead of apt-get command, it is an advanced package manager that can fix unmet dependencies error 2 for us . First, you need to install it:

sudo apt-get update
sudo apt-get install aptitude

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You can then use this to install the programs you want:

sudo aptitude install package-name

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• Remove reserved packages that cannot be upgraded, removed or changed2 . These packages can cause problems with unmet dependencies. You can list the reserved packages on the system:

sudo apt-get -u dist-upgrade

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I see you have some dependency issues installing libosmesa6-dev. It could be that some packages are locked on your system and cannot be upgraded or removed. You can try the following steps to resolve this issue:

• First, you can use the apt-get -f install command to try to fix broken dependencies in your system 1 2 . This command will automatically install or remove some packages to bring the system back to normal. You can enter the following commands:

sudo apt-get -f install
sudo dpkg --configure -a
sudo apt-get -f install

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• If the above command does not solve the problem, you can use aptitude to install libosmesa6-dev 2 . aptitudeis an advanced package manager that automatically handles dependency issues and provides a few solutions for you to choose from. You can enter the following command to install aptitude:

sudo apt-get update
sudo apt-get install aptitude

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• You can then use aptitude to install libosmesa6-dev 2 . You can enter the following commands:

sudo aptitude install libosmesa6-dev

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• aptitudeSome possible solutions are displayed and you are given the option to accept them. You can press Y or N to answer, or . to see more solutions. If you see a suitable solution, you can press Y to accept and continue with the installation.

• If the above methods are not successful, you can try to delete some locked packages 3 4 . These packages may prevent you from installing libosmesa6-dev or its dependencies. You can list locked packages with the following command:

sudo apt-mark showhold

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• You can then use the following commands to unlock and remove these packages:

sudo apt-mark unhold package-name
sudo apt-get remove package-name

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• Finally, you can try installing libosmesa6-dev again and check if there are still dependency issues.