A First Look at Package-to-Group Mechanism: An Empirical Study of the Linux Distributions
Dongming Jin, Nianyu Li, Kai Yang, Minghui Zhou, Zhi Jin
TL;DR
This study provides the first empirical examination of the Package-to-Group (P2G) mechanism in Linux distributions, analyzing 11,746 groups and 193,548 packages across 89 versions from five distributions. It introduces GValue, a multi-dimensional quality metric that combines Compactness, Relevance, Differentiation, and Distribution to assess group quality, with validation showing strong correlation to human judgments ($rs > 0.7$). The work reveals six evolution patterns for groups (e.g., Split, Add Features, Merge) and demonstrates that packages leaving P2G tend to remain in distributions rather than be removed, while P2G adoption remains more common in popular distributions but still affects a minority of total packages. A combination of content-based change pattern analysis, flow analysis, topic modeling (LDA), and TF-IDF keyword extraction is used to characterize adoption trends and group tendencies, offering practical guidance for maintainers and developers in scalable OSS ecosystems. Open data and replication materials are provided to support reproducibility and further research on P2G in Linux distributions and beyond.
Abstract
Reusing third-party software packages is a common practice in software development. As the scale and complexity of open-source software (OSS) projects continue to grow (e.g., Linux distributions), the number of reused third-party packages has significantly increased. Therefore, maintaining effective package management is critical for developing and evolving OSS projects. To achieve this, a package-to-group mechanism (P2G) is employed to enable unified installation, uninstallation, and updates of multiple packages at once. To better understand this mechanism, this paper takes Linux distributions as a case study and presents an empirical study focusing on its application trends, evolutionary patterns, group quality, and developer tendencies. By analyzing 11,746 groups and 193,548 packages from 89 versions of 5 popular Linux distributions and conducting questionnaire surveys with Linux practitioners and researchers, we derive several key insights. Our findings show that P2G is increasingly being adopted, particularly in popular Linux distributions. P2G follows six evolutionary patterns (\eg splitting and merging groups). Interestingly, packages no longer managed through P2G are more likely to remain in Linux distributions rather than being directly removed. To assess the effectiveness of P2G, we propose a metric called {\sc GValue} to evaluate the quality of groups and identify issues such as inadequate group descriptions and insufficient group sizes. We also summarize five types of packages that tend to adopt P2G, including graphical desktops, networks, etc. To the best of our knowledge, this is the first study focusing on the P2G mechanisms. We expect our study can assist in the efficient management of packages and reduce the burden on practitioners in rapidly growing Linux distributions and other open-source software projects.