feat(revamp): add zsh and neovim configs, add an install script and a dependencies list

config/zsh/.zprezto/modules/haskell/init.zsh

@@ -0,0 +1,21 @@
+#
+# Enables local Haskell package installation.
+#
+# Authors:
+#   Sebastian Wiesner <lunaryorn@googlemail.com>
+#
+
+# Return if requirements are not found.
+if (( ! $+commands[ghc] )); then
+  return 1
+fi
+
+# Load dependencies.
+pmodload 'helper'
+
+# Prepend Cabal per user directories to PATH.
+if is-darwin && [[  -d $HOME/Library/Haskell ]]; then
+  path=($HOME/Library/Haskell/bin(/N) $path)
+else
+  path=($HOME/.cabal/bin(/N) $path)
+fi