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I have downloaded a Debian package lxde, together with all its dependencies:

apt-get install --no-install-recommends lxde --download-only

So now, I have all packages in my /var/cache/apt/archives. I have made modifications to one package lxde_4+nmu1_all.deb (removed galculator from dependencies) and now I would like to install lxde from my modified package (i.e. with the modified dependencies). dpkg -i lxde_4+nmu1_all.deb does not work, because of unmet dependencies.

How can I tell apt-get to install my modified package /var/cache/apt/archives/lxde_4+nmu1_all.deb ?

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    Create a repo of your own, give it a higher version number (and/or a higher pin) and verify with apt-cache policy lxde that your version is now preferred. – tripleee May 30 '13 at 14:59
  • that would be an elegant solution. How would I create my own repo, by the way? Is it just the path to the files, i.e. /var/cache/apt/archives ? – user1968963 May 30 '13 at 16:43
  • No, it's somewhat more complex than that. You will need at least a Packages file (see dpkg-scanpackages) and these days probably a signing key. – tripleee May 30 '13 at 17:00
  • Why not just go ahead and install the dependencies first? they are listed in apt-cache show for example. – Faheem Mitha May 30 '13 at 17:46
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You can make your own repository with reprepro (tutorials 1 2 …).

If all you want to do is avoid installing galculator, an easier method is to make a fake galculator package with equivs. Then you can install lxde normally.

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After installing the package via dpkg --force-depends, you can install the dependencies and complete installation with apt-get install -f. This will only work in the case of "Depends". If a package is a "Pre-Depend", it must be installed prior to using dpkg -i.

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