Deploying a Hakyll site with Haskell/Shelly

README.md

Deploy

stack exec deploy

deploy.hs

{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ExtendedDefaultRules #-}
{-# OPTIONS_GHC -fno-warn-type-defaults #-}

import Shelly
import Data.Text as T

default (T.Text)

main = shelly $ verbosely $ do
  _ <- escaping False $ cmd "test" "-z" "\"$(git status --porcelain)\""
  status <- lastExitCode
  if status == 1 then
    do
      errorExit "You have uncommitted changes."
  else
    do
      run "stack" ["clean"]
      run "stack" ["setup"]
      run "stack" ["build"]
      run "git" ["checkout", "master"]
      run "cp" ["-a", "_site/.", "."]
      run "git" ["add", "-A"]
      run "git" ["commit", "-m", "Publish to GitHub Pages"]
      run "git" ["push", "origin", "master"]
      run "git" ["checkout", "develop"]
      echo "Finished publishing to GitHub Pages."
      exit 0

site.cabal

name:               site
version:            0.1.0.0
build-type:         Simple
cabal-version:      >= 1.10

executable site
  main-is:          site.hs
  build-depends:    base == 4.*
                  , hakyll == 4.8.*
                  , hakyll-sass == 0.2.0
  ghc-options:      -threaded
  default-language: Haskell2010

executable deploy
  main-is:          deploy.hs
  build-depends:    base == 4.*
                  , shelly == 1.7.*
  ghc-options:      -threaded
  default-language: Haskell2010

stack.yaml

resolver: lts-10.3

packages:
- .
extra-deps: [
  hakyll-sass-0.2.0,
  shelly-1.7.0
]

allow-newer: true