yggdrasil-worker-package-manager

yggdrasil-worker-package-manager is a simple package manager yggd worker. It knows how to install and remove packages, add, remove, enable and disable repositories, and does rudimentary detection of the host it is running on to guess the package manager to use. It only installs packages that match one of the provided allow-pattern regular expressions.

Installation

The easiest way to compile and install yggdrasil-worker-package-manager is using meson. Because it runs as a bus-activatable D-Bus service, files must be installed in specific directories.

Generally, it is recommended to follow your distribution's packaging guidelines for compiling Go programs and installing projects using meson. What follows is a generally acceptable set of steps to setup, compile and install yggdrasil using meson.

# Set up the project according to distribution-specific directory locations
meson setup --prefix /usr/local --sysconfdir /etc --localstatedir /var builddir
# Compile
meson compile -C builddir
# Install
meson install -C builddir

meson includes an optional --destdir to its install subcommand to aid in packaging.

Configuration

Default configuration values are documented in config.toml. When installing using meson, this file is installed into /etc/yggdrasil-worker-package-manager by default.

Usage

The worker will register itself as a handler for the "package_manager" directive. It expects to receive messages with the following JSON schema:

{
    "type": "object",
    "properties": {
        "command": { "enum": ["install", "remove", "enable-repo", "disable-repo", "add-repo", "remove-repo"] },
        "name": { "type": "string" },
        "content": { "type": "string" }
    },
    "required": ["command", "name" ]
}

Examples

Install vim

{
    "command": "install",
    "name": "vim"
}

Enable "updates-testing" repository

{
    "command": "enable-repo",
    "name": "updates-testing"
}

Add custom repository on a dnf or yum client

{
    "command": "add-repo",
    "name": "my-custom-repo",
    "content": "[my-custom-repo]\nbaseurl=http://servername/path/to/repo\nenabled=1"
}

Add custom repository on an apt client

{
    "command": "add-repo",
    "name": "deb http://servername path component"
}

Permitting operations

Before an operation on a package is permitted, the value of the name field is matched against each regular expression specified in the allow-pattern configuration value. Only if a package name matches one of the patterns in that array, is it permitted to be installed.

For example, given the allow-patterns value:

allow-patterns = ["^vim.*"]

Only packages that begin with "vim" are allowed to be installed or removed.