I guess the config file for nextDenovo can be created using a config file passed as params-file. This is an example taken from the nextDenovo documentation:

[General]
job_type = local
job_prefix = nextDenovo
task = all
rewrite = yes
deltmp = yes
parallel_jobs = 20
input_type = raw
read_type = clr # clr, ont, hifi
input_fofn = input.fofn
workdir = 01_rundir

[correct_option]
read_cutoff = 1k
genome_size = 1g # estimated genome size
sort_options = -m 20g -t 15
minimap2_options_raw = -t 8
pa_correction = 3
correction_options = -p 15

[assemble_option]
minimap2_options_cns = -t 8
nextgraph_options = -a 1