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Suppose I have a list of packages:

foo
libfoo
bar
baz
quux

And suppose foo requires libfoo and bar, and baz requires quux.

I want a way to put in that list, and get out this list:

foo
baz

I.e. - I want the minimal list of packages to install which would - after dependency resolution - cause the entire list of packages to be installed.

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apt-cache depends <packagename> shows the package along with it's dependencies. –  Avinash Raj Feb 18 at 18:06
    
How do you make the first list? –  DK Bose Feb 18 at 18:08
    
may this help you dmd askubuntu.com/questions/128524/… –  AgentCool Feb 18 at 18:13
    
The initial list is the result of my predecessor being dumb and installing a bunch of packages we need for a product, but then giving me a list of the diffs between a base ubuntu install and the install after he did those package installs. He no longer knows which were specifically selected. –  dmd Feb 18 at 18:14

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