This repository has several files which I find useful for developing on diagrams. I check out this repo as the directory where I keep the diagrams code.
Running mr update will checkout all the repositories, mr run git checkout master will switch to the master branch, and so forth.
packdeps is a helpful script that checks that upper bounds in a cabal file do not prevent using the latest released version. The shell script here runs packdeps on most of the Diagrams packages.
I run cabal2nix.sh to generate the default.nix files, and then
nix-shell to enter a subshell with all necessary Haskell packages installed.