Upgrade to use .NET 6 since PowerShell 7.0 is now out out of support

Engine/Engine.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <VersionPrefix>1.21.0</VersionPrefix>
-    <TargetFrameworks>netcoreapp3.1;net462</TargetFrameworks>
+    <TargetFrameworks>net6;net462</TargetFrameworks>
     <AssemblyName>Microsoft.Windows.PowerShell.ScriptAnalyzer</AssemblyName>
     <AssemblyVersion>1.21.0</AssemblyVersion>
     <PackageId>Engine</PackageId>
@@ -18,11 +18,11 @@
     <DebugType>portable</DebugType>
   </PropertyGroup>
 
-  <PropertyGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.1' ">
+  <PropertyGroup Condition=" '$(TargetFramework)' == 'net6' ">
     <DefineConstants>$(DefineConstants);CORECLR</DefineConstants>
   </PropertyGroup>
 
-  <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.1' ">
+  <ItemGroup Condition=" '$(TargetFramework)' == 'net6' ">
     <Compile Remove="SafeDirectoryCatalog.cs" />
   </ItemGroup>
 
@@ -63,10 +63,10 @@
     </EmbeddedResource>
   </ItemGroup>
 
-  <ItemGroup Condition="'$(TargetFramework)' == 'netcoreapp3.1'">
+  <ItemGroup Condition="'$(TargetFramework)' == 'net6'">
     <PackageReference Include="System.Management.Automation" Version="7.0.11" />
   </ItemGroup>
-  <PropertyGroup Condition="'$(TargetFramework)' == 'netcoreapp3.1'">
+  <PropertyGroup Condition="'$(TargetFramework)' == 'net6'">
     <DefineConstants>$(DefineConstants);PSV7;CORECLR</DefineConstants>
   </PropertyGroup>
 

README.md

@@ -72,7 +72,7 @@ To install **PSScriptAnalyzer** from source code:
 
 ### Requirements
 
-- [.NET Core 3.1.424 SDK](https://www.microsoft.com/net/download/dotnet-core/3.1#sdk-3.1.424) or
+- [.NET 6.0.11 containing 6.0.403 SDK](https://dotnet.microsoft.com/en-us/download/dotnet/6.0) or
   newer patch release
 * If building for Windows PowerShell versions, then the .NET Framework 4.6.2 [targeting pack](https://dotnet.microsoft.com/en-us/download/dotnet-framework/net462) (also referred to as developer/targeting pack) need to be installed. This is only possible on Windows.
 * Optionally but recommended for development: [Visual Studio 2017/2019](https://www.visualstudio.com/downloads)

Rules/Rules.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <VersionPrefix>1.21.0</VersionPrefix>
-    <TargetFrameworks>netcoreapp3.1;net462</TargetFrameworks>
+    <TargetFrameworks>net6;net462</TargetFrameworks>
     <AssemblyName>Microsoft.Windows.PowerShell.ScriptAnalyzer.BuiltinRules</AssemblyName>
     <AssemblyVersion>1.21.0</AssemblyVersion>
     <PackageId>Rules</PackageId>
@@ -16,7 +16,7 @@
 
   </ItemGroup>
 
-  <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.1' ">
+  <ItemGroup Condition=" '$(TargetFramework)' == 'net6' ">
     <!--  The version of Newtonsoft.Json needs to be newer than the version in the oldest supported version of PowerShell 7: https://github.com/PowerShell/PowerShell/blob/v7.0.11/src/System.Management.Automation/System.Management.Automation.csproj#L15 -->
     <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
     <PackageReference Include="System.Reflection.TypeExtensions" Version="4.7.0" />
@@ -57,7 +57,7 @@
     <DefineConstants>$(DefineConstants);PSV3;PSV4</DefineConstants>
   </PropertyGroup>
 
-  <PropertyGroup Condition="'$(TargetFramework)' == 'netcoreapp3.1'">
+  <PropertyGroup Condition="'$(TargetFramework)' == 'net6'">
     <DefineConstants>$(DefineConstants);PSV7;CORECLR</DefineConstants>
   </PropertyGroup>
 

appveyor.yml

@@ -36,7 +36,7 @@ build_script:
       if ($env:PowerShellEdition -eq 'PowerShellCore') {
           Set-Location $env:APPVEYOR_BUILD_FOLDER
           ./build.ps1 -Configuration "$env:BuildConfiguration" -PSVersion 7
-          ./PSCompatibilityCollector/build.ps1 -Configuration "$env:BuildConfiguration" -Framework 'netcoreapp3.1'
+          ./PSCompatibilityCollector/build.ps1 -Configuration "$env:BuildConfiguration" -Framework 'net6'
       }
 
 test_script:

build.psm1

@@ -203,7 +203,7 @@ function Start-ScriptAnalyzerBuild
 
         $framework = 'net462'
         if ($PSVersion -eq 7) {
-            $framework = 'netcoreapp3.1'
+            $framework = 'net6'
         }
 
         # build the appropriate assembly

global.json

@@ -1,5 +1,5 @@
 {
     "sdk": {
-        "version": "3.1.424"
+        "version": "6.0.403"
     }
 }