.stack-work/ is a work directory used by the `stack` build tool.
The `stack` build tool has recently been gaining a lot of traction in
the Haskell community. It is very similar to the `cabal` build tool,
which also has entries in this Haskell .gitignore file.
The Stackage project provides a cabal.config which locks in a specific
package set. This file should be shared between developers project so
that everyone is developing using the same versions of packages.
(cdep) illabout