Add graph of librustzcash crate dependencies to README.md

README.md

@@ -3,6 +3,69 @@
 This repository contains a (work-in-progress) set of Rust crates for working
 with Zcash.
 
+```mermaid
+graph TB
+	subgraph librustzcash
+        direction TB
+        subgraph main
+        nZAddr[zcash_address]
+        nZPrim[zcash_primitives]
+        nZProof[zcash_proofs]
+        nZProto[zcash_protocol]
+        nZCB[zcash_client_backend]
+        nZCS[zcash_client_sqlite]
+        nZKeys[zcash_keys]
+        nZip321[zip321]
+        end
+
+        subgraph standalone_components
+        nEqH[equihash]
+        nF4J[f4jumble]
+        nZEnc[zcash_encoding]
+        end
+    end
+
+	subgraph protocols
+	sapling[sapling-crypto]
+	orchard[orchard]
+	end
+
+    subgraph protocol_components
+    nZNE[zcash_note_encryption]
+    nZip32[zip32]
+    nZSpec[zcash_spec]
+    end
+
+	nZCS --> nZCB
+	nZCB --> nZPrim
+	nZCB --> nZip321
+	nZCB --> nZKeys
+	nZProof --> nZPrim
+	nZPrim --> nZProto
+	nZPrim --> nEqH
+	nZPrim --> sapling
+	nZPrim --> orchard
+	nZPrim --> nZEnc
+	nZPrim --> nZAddr
+    nZKeys --> nZAddr
+    nZKeys --> nZEnc
+    nZKeys --> nZProto
+	nZip321 --> nZAddr
+	nZip321 --> nZProto
+	nZAddr --> nZProto
+	nZAddr --> nF4J
+	nZAddr --> nZEnc
+	sapling --> nZNE
+	sapling --> nZip32
+	sapling --> nZSpec
+	orchard --> nZNE
+	orchard --> nZip32
+	orchard --> nZSpec
+
+    librustzcash --> protocols
+    protocols --> protocol_components
+```
+
 ## Security Warnings
 
 These libraries are under development and have not been fully reviewed.