ddeps ~master

DDeps

Source review support tool

A tool to create a module dependency graph for the D language. The feature is that you can record snapshots in two versions and compare them to visualize the differences.

Screenshot (Example)

basic

no core, no std

exclude rx.subject

Requirements

1. dub
2. Graphviz (for DOT/SVG output)
3. Mermaid-capable viewer/editor (only when using --format=mermaid)

Settings

For library (example)

	"configurations": [
		{
			"name": "default"
		},
		{
			"name": "diff",
			"postGenerateCommands": [
				"dub build -c makedeps",
				"dub fetch ddeps",
				"dub run ddeps -- --focus=rx -o deps.dot",
				"dot -Tsvg -odeps.svg deps.dot"
			]
		},
		{
			"name": "diff-update",
			"postGenerateCommands": [
				"dub fetch ddeps",
				"dub run ddeps -- --update"
			]
		},
		{
			"name": "makedeps",
			"dflags": ["-deps=deps.txt"]
		}
  ]

For executable

	"configurations": [
		{
			"name": "default"
		},
		{
			"name": "diff",
			"postGenerateCommands": [
				"dub build -c makedeps",
				"dub fetch ddeps",
				"dub run ddeps -- -o deps.dot",
				"dot -Tsvg -odeps.svg deps.dot"
			]
		},
		{
			"name": "diff-update",
			"postGenerateCommands": [
				"dub fetch ddeps",
				"dub run ddeps -- --update"
			]
		},
		{
			"name": "makedeps",
			"dflags": ["-deps=deps.txt"]
		}
  ]

For Mermaid output (example)

Use the same configurations but swap the post command to emit Mermaid instead of DOT/SVG:

{
	"name": "diff-mermaid",
	"postGenerateCommands": [
		"dub build -c makedeps",
		"dub fetch ddeps",
		"dub run ddeps -- --format=mermaid --output=deps.mmd"
	]
}

Usage

At first

create lock file

dub build -c makedeps
dub build -c diff-update

Basic

1. Modify source
2. Update diff
   • dub build -c diff
3. Do review with the dependency graph diff
   • Open the deps.svg in browser, or generate Mermaid with dub run ddeps -- --format=mermaid --output=deps.mmd and view it in a Mermaid-enabled editor.

Compare 2 versions

1. checkout a target version
   • git reset --hard XXX or git checkout XXXXX
2. reset to source version
   • git reset --hard HEAD~10 (e.g. 10 versions ago)
3. create deps-lock.txt
   • dub build -c makedeps
   • dub build -c diff-update
   • if dub.json / dub.sdl has not configure then add these.
     
4. reset to target version
   • git reset --hard ORIG_HEAD
5. make diff
   • dub build -c diff
6. open deps.svg (or produce Mermaid: dub run ddeps -- --format=mermaid --output=deps.mmd)

Arguments

| name | Usage | description | default | |:-----|:------------|:--|:--| | input | -i XXX or --input=XXX | deps file name | deps.txt | | output | -o XXX or --output=XXX | destination file name | write to stdout | | update | -u or --update | update lock file | false | | lock | -l XXX or --lock=XXX | lock file name | deps-lock.txt | | focus | -f XXX or --focus=XXX | filtering target by name | app | | depth | -d N or --depth=N | search depth | 1 | | exclude | -e XXX [-e YYY] or --exclude=XXX [--exclude=YYY] | exclude module names | object | | format | --format=dot|mermaid | output format | dot | | group | -g NAME=mod1,mod2 or -g mod | group nodes; short form includes submodules; multiple -g allowed | | | help | --help | show help | |

Mermaid output

You can render the diff as a Mermaid graph (useful in Markdown viewers that support Mermaid):

dub run ddeps -- --format=mermaid --output=deps.mmd

Open deps.mmd in a Mermaid-capable viewer/editor to inspect the graph. Added nodes/edges are green, removed are red, kept are neutral. Graphviz is not required for Mermaid output.

Grouping example

dub run ddeps -- --group util --group UI=app.ui,app.ui.widgets --format=dot -o deps.dot

--group util creates a group for util and its submodules (e.g., util.log). --group UI=... groups the exact modules listed. Groups are rendered as clusters in DOT and subgraphs in Mermaid.

Wildcard helper: suffix .* inside --group targets the module and all submodules even in long form, e.g. --group external=mir.*,numir or short form --group mir.*.

Integration / sample outputs script

Run once to clone sample repos and emit DOT/Mermaid (and SVG if dot exists):

rdmd ./scripts/sample_outputs.d

Artifacts live under ./tmp/test-<repo>/ and include grouping/exclude variants. For md, both with/without -e core -e std are generated.

Rx diff example is built in: the script checks out rx tag v0.7.0 as the old reference, compares against current HEAD, and writes grouped color-diff graphs (deps-diff-full.dot/.mmd/.svg) showing red/green changes.