Generate full dune transitive dependency graph with ./gen_deps.sh. This script will output deps.dot and deps.png.
Once deps.dot is generated, you can narrow the dependency graph using ./narrow_deps.sh <node-id>. You can inspect deps.dot to find the relevant node id you would like to narrow the graph to. Narrowing the graph will filter out the graph so that it only displays nodes which are dominated by the target, nodes that dominate the target, and all nodes in edges between these sets. For example, running ./narrow_deps.sh exe:./src/app/cli/src/dune:0 will generate a dependency graph for the mina.exe executable.