Composing heterogeneous software with style

Tools for composing software impose homogeneity require-ments on what is composed—that modules must share a language, target the same libraries, or share other conven-tions. This inhibits cross-language and cross-infrastructure composition. We observe that a unifying representation of software turns heterogeneity of components into a matter of styles: recurring interface patterns that cross-cut large numbers of codebases. We sketch a rule-based language for capturing styles independently of composition context, and describe how it applies in two example scenarios. 1