Migrate 'crypto' (Rust bindings) to separate repo (#16)

## Purpose

Complete the migration of the Rust binding library, i.e. `ConcordiumWalletCrypto` which was imported into another repository in Concordium/concordium-wallet-crypto-swift#2.

## Changes

Replace the previously embedded Rust code with an external dependency to the repository that it was moved to.

.github/workflows/build+test.yml

@@ -6,7 +6,6 @@ on:
     pull_request:
 
 env:
-  rust_version: "1.72"
   swift_version: "5.9"
 
 jobs:
@@ -18,17 +17,8 @@ jobs:
       uses: swift-actions/setup-swift@v1
       with:
         swift-version: "${{env.swift_version}}"
-    - name: Setup Rust
-      run: |
-        rustup default "${{env.rust_version}}"
-        rustup target install aarch64-apple-darwin aarch64-apple-ios aarch64-apple-ios-sim x86_64-apple-darwin x86_64-apple-ios
     - name: Check out sources
       uses: actions/checkout@v4
-      with:
-        submodules: recursive
-    - name: Build rust bindings
-      run: ./build.sh
-      working-directory: ./lib/crypto
     - name: Check formatting
       run: swift package plugin --allow-writing-to-package-directory swiftformat --lint
     - name: Build project

.gitmodules

@@ -1,6 +1,3 @@
 [submodule "concordium-grpc-api"]
 	path = concordium-grpc-api
 	url = https://github.com/Concordium/concordium-grpc-api.git
-[submodule "lib/crypto/concordium-base"]
-	path = lib/crypto/concordium-base
-	url = https://github.com/Concordium/concordium-base.git

Makefile

@@ -5,7 +5,3 @@ fmt:
 .PHONY: generate-grpc
 generate-grpc:
 	protoc --proto_path=./concordium-grpc-api --grpc-swift_opt='Client=true,Server=false' --grpc-swift_out=./Sources/ConcordiumSwiftSdk/Generated/Grpc --swift_out=./Sources/ConcordiumSwiftSdk/Generated/Grpc ./concordium-grpc-api/v2/concordium/*.proto
-
-.PHONY: build-crypto
-build-crypto:
-	cd ./lib/crypto && ./build.sh

Package.resolved

@@ -27,6 +27,15 @@
         "version" : "5.3.0"
       }
     },
+    {
+      "identity" : "concordium-wallet-crypto-swift",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/Concordium/concordium-wallet-crypto-swift.git",
+      "state" : {
+        "revision" : "7453b929c819fc926f8d805955988777467c879e",
+        "version" : "1.0.0"
+      }
+    },
     {
       "identity" : "grpc-swift",
       "kind" : "remoteSourceControl",

Package.swift

@@ -19,14 +19,14 @@ let package = Package(
         .package(url: "https://github.com/anquii/Base58Check.git", from: "1.0.0"),
         .package(url: "https://github.com/grpc/grpc-swift.git", from: "1.15.0"),
         .package(url: "https://github.com/nicklockwood/SwiftFormat.git", exact: "0.53.0"),
-        .package(path: "./lib/crypto/ConcordiumWalletCrypto"),
+        .package(url: "https://github.com/Concordium/concordium-wallet-crypto-swift.git", exact: "1.0.0"),
     ],
     targets: [
         .target(
             name: "ConcordiumSwiftSdk",
             dependencies: [
                 "Base58Check",
-                "ConcordiumWalletCrypto",
+                .product(name: "ConcordiumWalletCrypto", package: "concordium-wallet-crypto-swift"),
                 .product(name: "GRPC", package: "grpc-swift"),
                 "SwiftFormat",
             ]