As part of the BioHackathon Europe 2025, we here report on the progress of the hacking team preparing tools to develop constraint-based models in R for the Systems Biology community. This preliminary development relies on the adaptation of existing toolboxes. In this project, we proposed the (re)development of an R based framework for developing and simulating constraint-based models. We proposed to expand the Sybil library for model simulation with the functionalities for model reconstruction and analysis available in the widely used RAVEN toolbox in Matlab. The outcome will facilitate constraint based modelling to experimental scientists, thereby contributing to bridge the gap between data users and data generators. It will also be more FAIR by being usable with non-proprietary software, and align with software best practices as collected by the ELIXIR Tools Platform. We will work towards increased reproducibility by also considering implementation of FROG analysis in R. Moreover, as a tool developed by the ELIXIR Systems Biology Community for the wider community, the long-term maintenance burden is spread across a wider membership.Two weeks before the BioHackathon, we discovered a new tool in R allowing the simulation of models, called cobrar (https://github.com/Waschina/cobrar). Which calls for an assessment of its current state and definition of new development areas.