Igloo
In the afternoon Esme and the children worked on an igloo in our garden.
Haskell Programming from First Principles
In the afternoon I started with the first chapter of Haskell Programming from First Principles: All You Need is Lambda. I bought the PDF of this book years ago but back then I got stopped after the first chapter, can't recall why. I had also some hard time with the exercises. This time I managed to do all the exercises correctly but the very last one, which I will try again tomorrow.
In the evening I installed stack, a requirement for chapter 2, via Mac Ports using:
sudo port install stack