Generate a Shakefile scaffold

shakeup.sh

#!/bin/bash

SHAKEFILE=${1:-"Shakefile"}

if [ ! -e "$SHAKEFILE" ]; then

    tee -a "$SHAKEFILE" << 'EOF' > /dev/null
import Development.Shake

opts = shakeOptions { shakeFiles    = ".shake/"
                    , shakeProgress = progressSimple }

(~>) = phony

main :: IO ()
main = shakeArgs opts $ do
    want []

    "clean" ~> removeFilesAfter ".shake" ["//*"]

    -- phony "" $ do
    --   need []

    -- "" *> \_ -> do
    --   cmd "" []
EOF

    echo "Shakefile skeleton written to $SHAKEFILE"

fi