Trying to use WINETRICKS_LIB

[userx14]

I'm trying to use specific functions of winetricks in another bash file:

export WINETRICKS_LIB=0
source winetricks

The problem is that multiple calls on top level to the w_metadata() function will try to create files in subfolders in $W_TMP_EARLY. But for the subfolders corresponding to the categories to exist, winetricks_init must be run first:

winetricks/src/winetricks

Lines 5393 to 5396 in a41ce69

	WINETRICKS_CATEGORIES="apps benchmarks dlls fonts settings mkprefix"
	for _W_cat in ${WINETRICKS_CATEGORIES}; do
	w_try_mkdir -q "${WINETRICKS_METADATA}/${_W_cat}"
	done

It is however not run when WINETRICKS_LIB=0:

winetricks/src/winetricks

Lines 5802 to 5830 in a41ce69

	if ! test "${WINETRICKS_LIB}"; then
	WINETRICKS_SRCDIR=$(dirname "$0")
	WINETRICKS_SRCDIR=$(w_try_cd "${WINETRICKS_SRCDIR}"; pwd)
	# Which GUI helper to use (none/zenity/kdialog). See winetricks_detect_gui.
	WINETRICKS_GUI=none
	# Default to a shared prefix:
	WINETRICKS_OPT_SHAREDPREFIX=${WINETRICKS_OPT_SHAREDPREFIX:-1}
	# Handle options before init, to avoid starting wine for --help or --version
	while winetricks_handle_option "$1"; do
	shift
	done
	# Super gross, but I couldn't find a cleaner way. This needs to be set for the list verbs (maybe others)
	# while also supporting `dlls list` (etc.)
	# This used by w_metadata() to skip checking installed files if wine isn't available/needed
	if echo "$*" | grep -v list-installed | grep -q -w list; then
	export _W_wine_not_needed=1
	fi
	# Workaround for https://github.com/Winetricks/winetricks/issues/599
	# If --isolate is used, pass verb to winetricks_init, so it can set the wineprefix using winetricks_set_wineprefix()
	# Otherwise, an arch mismatch between ${WINEPREFIX:-$HOME/.wine} and the prefix to be made for the isolated app would cause it to fail
	case ${WINETRICKS_OPT_SHAREDPREFIX} in
	0) winetricks_init "$1" ;;
	*) winetricks_init ;;
	esac
	fi

Would there be another solution instead of duplicating the functionality of the winetricks_init function in my script?

What I need the use as library for, is making winetricks compatible with nixos flakes. Since winetricks does use wget to download it's installers, it is incompatible to the dependency management. I would like to overwrite the w_download() function with a function that uses results from the nix.fetchurl feature, and just copies the installers to the correct location.