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Hadrian: Building in Haskell Packages
Hadrian was your first foray into working on build systems. And you learned a lot about the problem from there. Could you tell us a little bit more about those papers and what the core lessons were from them? Yeah sure. The first paper was about the limitations that we encountered in make and why we decided to rewrite that build system using shake. It supports various features that we need, for example, early cut off and sharing builds in the cloud and dynamic dependencies. That's why we wanted to rewrite it. On top of that it comes with a sensible programming model. In some sense we're saying don't use make for big projects at all. We also wanted to look at a wider