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+! Modularity by Construction
+
+Guillermo Polito (guillermo.polito@inria.fr)
+
+""Abstract:""
+
+Pharo has grown organically over the years and as it evolved, dependencies between projects were not always clearly defined.
+For example, parts of the compiler infrastructure ended up depending on Morphic.
+The interactive nature of the environment also allows developers to compile incorrect code, including e.g., code with undeclared variables.
+This is convenient during development, but it can make validation harder.
+
+In this talk I'll also show how, at the same time, the ecosystem has improved a lot in this area.
+Projects are now commonly managed with Metacello and explicit dependency declarations.
+The bootstrap process runs on every commit since 2016 and started enforcing stricter compilation and project loading.
+The CI process is also being updated to support more independent project testing.
+Altogether, these changes make the system easier to maintain and open the door to better tooling, including tools that rely on consistent project naming conventions such as coverage analysis. 
+
+
+""Bio:""
+
+Guille Polito is chargé de recherche at INRIA and the CRIStAL laboratory in the University of Lille, within the Evref team.
+He formerly worked on industry on service-oriented and mobile applications before doing a PhD on computer science.
+Guille's main research interests are compilers, modularity, tooling and automated testing.
+Guille participates in the Pharo community since 2010 and is now board member.
+His most noticeable contributions to the community are the Pharo Bootstrap process and Iceberg.
diff --git a/2026-Conference/talks/2026-modules.md b/2026-Conference/talks/2026-modules.md
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+! The Pharo Module System
+
+Guillermo Polito (guillermo.polito@inria.fr)
+
+""Abstract:""
+
+The Pharo community has been asking for namespace support for years.
+However, namespaces alone are not sufficient to address the needs of modern development.
+In this talk we give a glimpse at the implementation of a modern module system that supports namespaces but also separate compilation and co-existance of multiple versions of the same library side-by side.
+However, such an implementation does not come without challenges.
+Traditional Smalltalk extension methods are global, creating unexpected dependencies, and making it difficult to isolate changes to a single module.
+Moreover, maintaining backwards compatibility adds further constraints, as existing code must continue to function even as the module system evolves.
+Finally, debugging and understanding code also becomes more complex, because names may have different meanings depending on the context in which they are used.
+
+""Bio:""
+
+Guille Polito is chargé de recherche at INRIA and the CRIStAL laboratory in the University of Lille, within the Evref team.
+He formerly worked on industry on service-oriented and mobile applications before doing a PhD on computer science.
+Guille's main research interests are compilers, modularity, tooling and automated testing.
+Guille participates in the Pharo community since 2010 and is now board member.
+His most noticeable contributions to the community are the Pharo Bootstrap process and Iceberg.