>>>>> On Thu, 09 Dec 2021, Maciej Barć wrote:

>  dune-install() {
> +	local pkgs
> +	if [[ -n "${@}" ]] ; then
> +		pkgs="${@}"

Here pkgs is a scalar ...

> +	else
> +		pkgs=${DUNE_PKG_NAME}
> +	fi
> +
> +	local myduneopts=(
> +		--prefix="${ED%/}/usr"
> +		--libdir="${D%/}$(ocamlc -where)"
> +		--mandir="${ED%/}/usr/share/man"
> +	)
>  	local pkg
> -	for pkg ; do
> -		dune install \
> -			--prefix="${ED%/}/usr" \
> -			--libdir="${D%/}$(ocamlc -where)" \
> -			--mandir="${ED%/}/usr/share/man" \
> -			"${pkg}" || die
> +	for pkg in ${pkgs[@]} ; do

... and here it's an array?

> +		dune install ${myduneopts[@]} ${pkg} || die
> +
> +		# Move docs to the appropriate place.
> +		if [ -d "${ED%/}/usr/doc/${pkg}" ] ; then
> +			mkdir -p "${ED%/}/usr/share/doc/${PF}/" || die
> +			mv "${ED%/}/usr/doc/${pkg}" "${ED%/}/usr/share/doc/${PF}/" || die
> +			rm -rf "${ED%/}/usr/doc" || die
> +		fi
>  	done
>  }

I'd write something like this:

	local -a pkgs=("$@")
	[[ ${#pkgs[@]} -eq 0 ]] && pkgs=(${DUNE_PKG_NAME})

And the loop like this (note the double quotes to be whitespace-safe):

	for pkg in "${pkgs[@]}"; do
		...
	done

Ulrich