- One file with all the module classes (spack/modules.py)
- Has an EnvModule superclass that does most of the work and consolidates common code
- Subclasses have specializations for different module systems (TclModule, Dotkit)
- One command (spack module) for all the types of modules to use
- the one command is used by the scripts, only need to maintain in one place
- has some subcommands for different module types, but they're handled mostly generically.
- Consolidate zsh support into a single setup-env.sh script.