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renovate/rouge-4.x
Jef Roosens 2022-09-12 14:30:17 +02:00
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# repo
This module manages the contents of the various repositories stored within a
Vieter instance.
## Terminology
* Arch-repository (arch-repo): specific architecture of a given repository. This is what
Pacman actually uses as a repository, and contains its own `.db` & `.files`
files.
* Repository (repo): a collection of arch-repositories. A single repository can
contain packages of different architectures, with each package being stored
in that specific architecture' arch-repository.
* Repository group (repo-group): a collection of repositories. Each Vieter
instance consists of a single repository group, which manages all underlying
repositories & arch-repositories.
## Arch-repository layout
An arch-repository (aka a regular Pacman repository) consists of a directory
with the following files (`{repo}` should be replaced with the name of the
repository):
* One or more package directories. These directories follow the naming scheme
`${pkgname}-${pkgver}-${pkgrel}`. Each of these directories contains two
files, `desc` & `files`. The `desc` file is a list of the package's metadata,
while `files` contains a list of all files that the package contains. The
latter is used when using `pacman -F`.
* `{repo}.db` & `{repo}.db.tar.gz`: the database file of the repository. This
is just a compressed tarball of all package directories, but only their
`desc` files. Both these files should have the same content (`repo-add`
creates a symlink, but Vieter just serves the same file for both routes)
* `{repo}.files` & `{repo}.files.tar.gz`: the same as the `.db` file, but this
also contains the `files` files, instead of just the `desc` files.
## Filesystem layout
The repository part of Vieter consists of two directories. One is the `repos`
directory inside the configured `data_dir`, while the other is the configured
`pkg_dir`. `repos` contains only the repository group, while `pkg_dir` contains
the actual package archives. `pkg_dir` is the directory that can take up a
significant amount of memory, while `repos` solely consists of small text
files.