Jenkins build script for Cabal and cabal-install

build-cabal.sh

export GHC=$compiler
cd Cabal
which cabal
[ ! -d .cabal-sandbox ] && cabal sandbox init
cabal clean
cabal install -j --only-dependencies --enable-tests -w $compiler
cabal configure --enable-tests -w $compiler
cabal build
cabal test  --test-option='--jxml=$test-suite.junit.xml' --test-option=--plain
cabal sdist
cd ../cabal-install
[ ! -d .cabal-sandbox ] && cabal sandbox init
cabal sandbox add-source ../Cabal
cabal clean
cabal install -j --only-dependencies -w $compiler
cabal configure -w $compiler
cabal build
cabal sdist