no nested protocol for you

Author: joshuawright11

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ jobs:
     test-macos:
         runs-on: macos-13
         env:
-            DEVELOPER_DIR: /Applications/Xcode_15.4.app/Contents/Developer
+            DEVELOPER_DIR: /Applications/Xcode_15.0.app/Contents/Developer
         steps:
             - uses: actions/checkout@v3
             - name: Build
@@ -21,7 +21,7 @@ jobs:
         runs-on: ubuntu-22.04
         strategy:
             matrix:
-                swift: [5.10]
+                swift: [5.9]
         container: swift:${{ matrix.swift }}
         steps:
             - uses: actions/checkout@v3

PapyrusPlugin/Sources/Models/Declaration.swift

@@ -151,11 +151,7 @@ extension Declaration {
 
 @resultBuilder
 struct DeclarationsBuilder {
-    protocol Block {
-        var declarations: [Declaration] { get }
-    }
-
-    static func buildBlock(_ components: Block...) -> [Declaration] {
+    static func buildBlock(_ components: DeclarationBuilderBlock...) -> [Declaration] {
         components.flatMap(\.declarations)
     }
 
@@ -210,10 +206,14 @@ struct DeclarationsBuilder {
     }
 }
 
-extension Declaration: DeclarationsBuilder.Block {
+protocol DeclarationBuilderBlock {
+    var declarations: [Declaration] { get }
+}
+
+extension Declaration: DeclarationBuilderBlock {
     var declarations: [Declaration] { [self] }
 }
 
-extension [Declaration]: DeclarationsBuilder.Block {
+extension [Declaration]: DeclarationBuilderBlock {
     var declarations: [Declaration] { self }
 }