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This seed describes the packages at Priority: required. These packages are installed by the first pass of debootstrap, which extracts them (dpkg -x, without running maintainer scripts) in order to construct a basic environment into which it can chroot and install them properly.
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A system containing only required packages is not a supported Ubuntu system; you need to install at least the packages from minimal as well.
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We avoid following Recommends for this seed because it is processed by debootstrap, not apt, and debootstrap only does the minimum necessary.
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* Feature: no-follow-recommends
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These are packages which have "Essential: yes" in their control file.
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* base-passwd # ColinWatson
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* bsdutils # LaMontJones
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* util-linux # LaMontJones
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In some sense, debconf isn't truly required, but it makes our life a lot easier to have it installed in the first pass.
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Other packages necessary to get started:
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* dash # Much faster default shell