parametrized/dynamic task-creators?

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Svilen Dobrev

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Nov 15, 2021, 2:49:45 PM11/15/21

to python-doit

g'day

i am coming from heavy make usage.. and cannot find a way to dynamicaly create tasks.

Say (artificial example), there are many .mp3 files.

i want to convert them to .wav ; and then each .wav to .flac

Makefile would be:

%.wav: %.mp3

convert-mp3-to-wav $< $@

%.flac: %.wav

convert-wav-to-flac $< $@

MP3s = $(wildcard *.mp3)

FLACs = $(MP3s:%.mp3=%.flac)

now: $(FLACs)

i know how to make top level task_mp3towav() task generator in doit, but how to generate the other levels? their in-dependencies are not known before hand, the top-level is the one that pulls the whole graph.

e.g. some generative? task_wav2flac() that takes *any* .wav and makes it into .flac ; and then execute those depending on what is needed by the top-level (or any other level) ones.