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So,that mean synaptic may missing some depens while installing some pack which are need i386 ,for example, wine installed by synaptic actually isnt completely?
The `--add-architecture` flag only needs to be passed once (and the repository database updated) for the extra architecture to be added to the system, you don't need to use it each time you add new packages.
the question is which package is the first one need to add-architecture i386.if you never do it by cl, wine or bumblebee or something else needing i386 will not install completely .i think synaptic shoud check the dependencies and make alert to add architecture by comandline if i386 is needed,for better user experience