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+# Double Pendulum Simulation
+
+Install [Nix](https://nixos.org) and run `nix-shell --run 'cabal
+run'`, or install [Haskell](https://haskell.org),
+[Cabal](https://www.haskell.org/cabal/) and
+[Gloss](https://hackage.haskell.org/package/gloss) manually then run
+`cabal run`.