Configuration files for my shell environment.

Installation

Make sure the following prerequisites are installed (package names are for Debian). In any case:
- The stow package for "installation" of the config files.
- Obviously, the bash, git, tmux, and vim packages.
- The bash-completion package for Bash tab completion.
For Haskell development:
- GHC, cabal and HLS via ghcup.
- Then, the hlint linter and the ormolu formatter via cabal install.
For Python development:
- The pipenv (packaging, dependency management, virtual environments) flake8 (linting), python3-autopep8 (auto-formatting) and mypy (static type annotations) packages.
Configure terminal emulator (Gnome Terminal, Putty, ...) for use with the Nord color theme.
Clone to ~/.dotfiles/.
Inside the cloned repository, run stow for each required set of config files to create the respective symlinks in ~. Example:
```
$ stow bash
$ stow vim
$ stow haskell
```
Install the vim-plug plugin manager for Vim. Then run :PlugUpdate from inside Vim to install all plugins listed in the .vimrc file.

Random usage notes

Start new projects:

$ mkdir my-project
$ cd my-project
$ cabal init -i
...
$ cabal build
$ cabal run

Start new projects in a virtual environment:

$ cd my-project
$ pipenv install [whatever] # no package just creates a Pipfile
$ pipenv shell
...
$ exit