Add Swift script for bumping dependency libsecp256k1

.gitignore

@@ -5,3 +5,6 @@
 xcuserdata/
 DerivedData/
 .swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
+scripts/update-libsecp/Package.resolved
+scripts/update-libsecp/.build
+scripts/update-libsecp/.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata

README.md

@@ -6,7 +6,7 @@
 _K1_ is Swift wrapper around [libsecp256k1 (bitcoin-core/secp256k1)][lib], offering ECDSA, Schnorr ([BIP340][bip340]) and ECDH features.
 
 > [!NOTE]
-> Current `libsecp256k1` version is [0.6.0 (0cdc758a56360bf58a851fe91085a327ec97685a)](https://github.com/bitcoin-core/secp256k1/commit/0cdc758a56360bf58a851fe91085a327ec97685a)
+> Current `libsecp256k1` version is [v0.6.0 (0cdc758a56360bf58a851fe91085a327ec97685a)](https://github.com/bitcoin-core/secp256k1/releases/tag/v0.6.0)
 
 # Documentation
 Read full documentation [here on SwiftPackageIndex][doc].
@@ -74,7 +74,7 @@ For each private key there exists two different `signature:for:options` (one tak
 
 The `option` is a `K1.ECDSA.SigningOptions` struct, which by default specifies [`RFC6979`][rfc6979] deterministic signing, as per Bitcoin standard, however, you can change to use secure random nonce instead.
 
-### NonRecoverable 
+### NonRecoverable
 
 #### Sign
 
@@ -89,7 +89,7 @@ let hashedMessage: Data = // from somewhere
 let signature = try alice.signature(for: hashedMessage)
 ```
 
-##### Digest 
+##### Digest
 
 ```swift
 let message: Data = // from somewhere
@@ -249,12 +249,23 @@ assert(ab.count == 65) // pass
 
 # Development
 
-Stand in root and run to setup submodules
+## Setup submodule
+Stand in root and run to setup submodule
 
 ```sh
 make submodules
 ```
 
+## Update submodule
+```sh
+just bump-dep
+```
+
+Or to use dry run:
+```sh
+just bump-dep true
+```
+
 ## `gyb`
 
 Some of the files in this project are autogenerated (metaprogramming) using the Swift Utils tools called [gyb](https://github.com/apple/swift/blob/main/utils/gyb.py) (_"generate your boilerplate"_). `gyb` is included in [`./scripts/gyb`](scripts/gyb).

justfile

@@ -0,0 +1,10 @@
+default: test
+
+test: 
+  swift test
+
+bump-dep dryRun="false":
+  swift run \
+    --package-path scripts/update-libsecp \
+    update-libsecp \
+    {{ if dryRun == "true" { "--dry-run" } else { "" } }}

scripts/update-libsecp/Package.swift

@@ -0,0 +1,30 @@
+// swift-tools-version: 6.2.3
+
+import PackageDescription
+
+let package = Package(
+	name: "UpdateLibsecp",
+	platforms: [
+		.macOS(.v13),
+	],
+	products: [
+		.executable(
+			name: "update-libsecp",
+			targets: ["UpdateLibsecp"]
+		),
+	],
+	dependencies: [
+		.package(
+			url: "https://github.com/swiftlang/swift-subprocess",
+			from: "0.2.1"
+		),
+	],
+	targets: [
+		.executableTarget(
+			name: "UpdateLibsecp",
+			dependencies: [
+				.product(name: "Subprocess", package: "swift-subprocess"),
+			]
+		),
+	]
+)