KRkragen·Jun 10, 2020
You can put the group of nodes in a subgraph and apply the uniform style to the subgraph. In https://gitlab.com/kragen/bubbleos/-/tree/master/yeso#callin... I did that for example as follows in https://gitlab.com/kragen/bubbleos/-/blob/master/yeso/api-ty...:
subgraph types {
node [shape=square];
subgraph ints {
node [label=int];
int bool fd u32in die stride;
}
long int s32 u8 u32 -> ypix ywin;
...
Its expressivity is limited, since it depends on a hierarchical classification of your nodes and arcs that doesn't always eliminate all duplication, but it's usually enough to manually style the nodes the way I want without too much hassle. Because "types" and "ints" aren't "clusters", they don't affect the l
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ayout. (If you do want to use clusters, that can make this approach more difficult.)dnl
I haven't ever been quite desperate enough to use m4 to generate Graphviz files, although clearly it is a good fit. My experiences with m4 are more in the nature of getting way too much rope to hang myself with and then having a terrible time debugging. I wrote an HTML-generating macro language in m4 in 1994 and have never stopped regretting it.dnl
I do agree about the Makefile. In Dumpulse I used the following Makefile rule:
%.png: %.dot
dot -Tpng < $< > $@
That way I can rebuild the README diagrams (if outdated) just by listing "diagram.png heartbeat.png health-report.png" as dependencies of the "all" target. https://github.com/kragen/dumpulse/blob/master/Makefile