Stack project for building https://gist.github.com/ploeh/c999e2ae2248bd44d775

Booking.cabal

name:                Booking
version:             0.1.0.0
synopsis:            Handling a reservation request in Haskell. Proof of concept
description:         Please see README.md
homepage:            https://gist.github.com/ploeh/c999e2ae2248bd44d775
license:             MIT
license-file:        LICENSE
author:              Mark Seemann
maintainer:          example@example.com
copyright:           2016 Mark Seemann
category:            Web
build-type:          Simple
cabal-version:       >=1.10

library
  hs-source-dirs:      src 
  exposed-modules:     ApiModel, App, DB
  default-language:    Haskell2010
  build-depends:       base, directory, filepath, time, mtl, either

LICENSE

(Add license here.)

Setup.hs

import Distribution.Simple
main = defaultMain

stack.yaml

# For more information, see: https://github.com/commercialhaskell/stack/blob/release/doc/yaml_configuration.md

# Specifies the GHC version and set of packages available (e.g., lts-3.5, nightly-2015-09-21, ghc-7.10.2)
resolver: lts-3.8

# Local packages, usually specified by relative directory name
packages:
- '.'

# Packages to be pulled from upstream that are not in the resolver (e.g., acme-missiles-0.3)
extra-deps: []

# Override default flag values for local packages and extra-deps
flags: {}

# Extra package databases containing global packages
extra-package-dbs: []

# Control whether we use the GHC we find on the path
# system-ghc: true

# Require a specific version of stack, using version ranges
# require-stack-version: -any # Default
# require-stack-version: >= 0.1.4.0

# Override the architecture used by stack, especially useful on Windows
# arch: i386
# arch: x86_64

# Extra directories used by stack for building
# extra-include-dirs: [/path/to/dir]
# extra-lib-dirs: [/path/to/dir]

Make sure to put the modules from here to a folder called src — or adjust the Booking.cabal file accordingly.