@@ -63,7 +63,7 @@ speak "Restoring $LIBGMP_VER files from cache"
6363cp -Rp "$LIBGMP_DIR/ghc-libs/." "$WORK_DIR/vendor/ghc-libs"
6464
6565########## stack exe ###############################################
66−STACK_VER=${STACK_VER:-1.6.3}
66+STACK_VER=${STACK_VER:-2.1.3}
6767STACK_URL=${STACK_URL:-https://github.com/commercialhaskell/stack/releases/download/v"$STACK_VER"/stack-"$STACK_VER"-linux-x86_64.tar.gz}
6868STACK_DIR="$CACHE_DIR/stack-$STACK_VER"
6969STACK_EXE="$STACK_DIR/stack"
@@ -100,7 +100,8 @@ if [ -f "$BUILD_DIR/Makefile" ]; then
100100 make install
101101else
102102 stack setup
103− stack build --fast --copy-bins
103+ stack clean
104+ stack build --ghc-options='-O2' --copy-bins
104105fi
105106
106107# Set context environment variables.