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+---
+title: 'Hilde - The Repository Format'
+date: '2021-06-27'
+draft: true
+---
+
+Welcome to the second devlog of Hilde! In this post, I'll be explaining to both
+myself and the reader what structure Hilde should conform to. This post will
+describe the most advanced repository possible, and will hopefully allow me to
+create a proper to-do list of features I have to implement. Note that this post
+is mostly a re-write of
+[this article](https://wiki.debian.org/DebianRepository/Format#Overview).
+
+# Concepts
+
+## Root
+
+Each repo has a root from which it serves all files. I'll be referring to this
+root as `$ROOT` from now on. This root is just the base URL for the repository.
+Any package on the repo is part of a distribution, which is basically a way to
+organize packages into categories. For example, the official Debian
+repositories distinguish between `stable`, `stable/updates`, etc. Here, you can
+also see that a distribution can contain forward slashes.
+
+## Distributions
+
+A distribution is located at `$ROOT/dists/$DIST`, where `$DIST` is the name of
+the distribution. Each dist provides a `Release` file with an accompanying
+`Release.gpg`. This GPG key is then used by the package manager to sign
+the `Release` file. Additionally, the repo provides an `InRelease` file, which
+is the same as the `Release` file, but already signed using the GPG key. Each
+dist contains one or more components.
+
+## Components
+
+Each component is a further sub-category within a distribution. A component
+contains one or more `binary-$ARCH` subdirectories, where `$ARCH` is the
+architecture for the binary packages within. Source packages are located inside
+a `source` subdirectory. For each `binary-$ARCH` & `source` directory, a
+`Contents-$ARCH` (`Contents-source` resp.) file is provided. This file is
+usually compressed using gzip, and consists of a list of all files contained
+within all packages inside the component.
+
+### `binary-$ARCH` & `source` directories
+
+These directories contain a `Packages` & `Sources` files respectively, usually
+provided in a compressed format. These files contain a control-file style list
+of all the packages contained within the directory.
+
+# Types of files
+
+## Release files
+
+