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Layering
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I can change my inherited build without rebuilding everything.
For example: base > xorg-nvidia > plasma > homepc I can easily switch desktop environments by making "homepc" inherit "i3", or w/e.
Each layer is essentially a "Dockerfile". If you understand docker, you understand how the images are built and managed.
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Fast switching.
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I can create images for different dev environemnts/clients. I can create an image purely for gaming. I can create an image steam.
Darch integrates with grub, so entries will dynamically show up on boot.
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Sharing with DockerHub.
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Sharing with other machines (and other people).
Since they are docker images, I can easily upload them to DockerHub.
I can update my local build by doing "docker pull && darch extract && sudo darch stage".
I will soon setup Travis-CI to auto build and push to DockerHub. Then, I never have to build locally. A cron job will queue a build every few days to make my image "rolling". I can easily revert back to previously working docker images (all tagged by date).
