bbvch · CaringDev · Jun 4, 2025 · Jun 3, 2025
diff --git a/.cspell.json b/.cspell.json
@@ -12,11 +12,17 @@
   "languageSettings": [
     {
       "languageId": "csharp",
-      "words": ["bazz", "browsable", "nologo", "zyxwvutsrq"]
+      "words": ["bazz", "browsable", "netcoreapp", "nologo", "zyxwvutsrq"]
     },
     {
       "languageId": "csproj",
-      "words": ["buildtransitive", "contentfiles", "linq", "visualstudio"]
+      "words": [
+        "buildtransitive",
+        "contentfiles",
+        "linq",
+        "netcoreapp",
+        "visualstudio"
+      ]
     },
     {
       "languageId": "nuspec",
@@ -41,5 +47,5 @@
       "languageId": "props"
     }
   ],
-  "words": ["asbjornu", "teardowns", "thomaslevesque", "xunit"]
+  "words": ["asbjornu", "netstandard", "teardowns", "thomaslevesque", "xunit"]
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 2.9.305
+
+target .NET 4.7.2 and .NET 8.0, 'best-effort' support for netstandard 2.0
+
 ## 2.9.304
 
 multi-target .NET 4.7.2 and .NET 6.0

diff --git a/Directory.Build.props b/Directory.Build.props
@@ -1,7 +1,7 @@
 <Project>
 
   <PropertyGroup>
-    <SupportedDotnetVersion>net6.0</SupportedDotnetVersion>
+    <SupportedDotnetVersion>net8.0</SupportedDotnetVersion>
     <SupportedFrameworkVersion>net472</SupportedFrameworkVersion>
     <LatestDotnetVersion>net9.0</LatestDotnetVersion>
     <Deterministic>true</Deterministic>

diff --git a/Directory.Packages.props b/Directory.Packages.props
@@ -4,14 +4,31 @@
     <CentralPackageTransitivePinningEnabled>true</CentralPackageTransitivePinningEnabled>
     <CentralPackageVersionOverrideEnabled>false</CentralPackageVersionOverrideEnabled>
   </PropertyGroup>
-  <ItemGroup Condition="$(TargetFramework)!=$(SupportedDotnetVersion)">
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
-    <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.0"  />
-  </ItemGroup>
-  <ItemGroup Condition="$(TargetFramework)==$(SupportedDotnetVersion)">
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
-    <PackageVersion Include="xunit.runner.visualstudio" Version="3.0.2"  />
-  </ItemGroup>
+
+  <Choose>
+    <When Condition="$([MSBuild]::IsTargetFrameworkCompatible($(TargetFramework), 'net8.0')) or $([MSBuild]::IsTargetFrameworkCompatible($(TargetFramework), 'net472'))">
+      <ItemGroup>
+        <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+        <PackageVersion Include="xunit.runner.utility" Version="2.9.3" />
+        <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.0" />
+      </ItemGroup>
+    </When>
+    <When Condition="$([MSBuild]::IsTargetFrameworkCompatible($(TargetFramework), 'net6.0'))">
+      <ItemGroup>
+        <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
+        <PackageVersion Include="xunit.runner.utility" Version="2.9.3" />
+        <PackageVersion Include="xunit.runner.visualstudio" Version="3.0.2" />
+      </ItemGroup>
+    </When>
+    <Otherwise>
+      <ItemGroup>
+        <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
+        <PackageVersion Include="xunit.runner.utility" Version="2.4.0" />
+        <PackageVersion Include="xunit.runner.visualstudio" Version="2.4.5" />
+      </ItemGroup>
+    </Otherwise>
+  </Choose>
+
   <ItemGroup>
     <PackageVersion Include="Bullseye" Version="6.0.0" />
     <PackageVersion Include="Microsoft.CodeAnalysis.PublicApiAnalyzers" Version="4.14.0" />
@@ -21,6 +38,5 @@
     <PackageVersion Include="xunit" Version="2.9.3" />
     <PackageVersion Include="xunit.extensibility.core" Version="2.9.3" />
     <PackageVersion Include="xunit.extensibility.execution" Version="2.9.3" />
-    <PackageVersion Include="xunit.runner.utility" Version="2.9.3" />
   </ItemGroup>
 </Project>
diff --git a/README.md b/README.md
@@ -10,7 +10,7 @@ _[![LambdaTale NuGet version](https://img.shields.io/nuget/v/bbv.LambdaTale?labe
 [![Lint](https://github.com/bbvch/LambdaTale/actions/workflows/lint.yml/badge.svg)](https://github.com/bbvch/LambdaTale/actions/workflows/lint.yml)
 [![Spell check](https://github.com/bbvch/LambdaTale/actions/workflows/spell-check.yml/badge.svg)](https://github.com/bbvch/LambdaTale/actions/workflows/spell-check.yml)
 
-Platform support: [.NET 6](https://learn.microsoft.com/en-us/dotnet/core/whats-new/dotnet-6) and [.NET 4.7.2](https://learn.microsoft.com/en-us/dotnet/framework/whats-new) upwards.
+Platform support: [.NET 8](https://learn.microsoft.com/en-us/dotnet/core/whats-new/dotnet-8) and [.NET 4.7.2](https://learn.microsoft.com/en-us/dotnet/framework/whats-new) upwards. There are best-effort [netstandard2.0](https://learn.microsoft.com/en-us/dotnet/standard/net-standard?tabs=net-standard-2-0#net-standard-versions) assets 'without any guarantees', I'll try to keep them as long as reasonable.
 
 ## Usage
 

diff --git a/src/Directory.Build.props b/src/Directory.Build.props
@@ -4,7 +4,7 @@
 
   <PropertyGroup>
     <AnalysisMode>All</AnalysisMode>
-    <TargetFrameworks>$(SupportedDotnetVersion);$(SupportedFrameworkVersion)</TargetFrameworks>
+    <TargetFrameworks>$(SupportedDotnetVersion);$(SupportedFrameworkVersion);netstandard2.0</TargetFrameworks>
     <EmbedUntrackedSources>true</EmbedUntrackedSources>
     <ProduceReferenceAssembly>true</ProduceReferenceAssembly>
   </PropertyGroup>

diff --git a/src/LambdaTale.Execution/packages.lock.json b/src/LambdaTale.Execution/packages.lock.json
@@ -38,7 +38,58 @@
         }
       }
     },
-    "net6.0": {
+    ".NETStandard,Version=v2.0": {
+      "MinVer": {
+        "type": "Direct",
+        "requested": "[6.0.0, )",
+        "resolved": "6.0.0",
+        "contentHash": "+/SsmiySsXJlvQLCGBqaZKNVt3s/Y/HbAdwtop7Km2CnuZbaScoqkWJEBQ5Cy9ebkn6kCYKrHsXgwrFdTgcb3g=="
+      },
+      "NETStandard.Library": {
+        "type": "Direct",
+        "requested": "[2.0.3, )",
+        "resolved": "2.0.3",
+        "contentHash": "st47PosZSHrjECdjeIzZQbzivYBJFv6P2nv4cj2ypdI204DO+vZ7l5raGMiX4eXMJ53RfOIg+/s4DHVZ54Nu2A==",
+        "dependencies": {
+          "Microsoft.NETCore.Platforms": "1.1.0"
+        }
+      },
+      "xunit.extensibility.execution": {
+        "type": "Direct",
+        "requested": "[2.9.3, )",
+        "resolved": "2.9.3",
+        "contentHash": "yMb6vMESlSrE3Wfj7V6cjQ3S4TXdXpRqYeNEI3zsX31uTsGMJjEw6oD5F5u1cHnMptjhEECnmZSsPxB6ChZHDQ==",
+        "dependencies": {
+          "xunit.extensibility.core": "[2.9.3]"
+        }
+      },
+      "Microsoft.NETCore.Platforms": {
+        "type": "Transitive",
+        "resolved": "1.1.0",
+        "contentHash": "kz0PEW2lhqygehI/d6XsPCQzD7ff7gUJaVGPVETX611eadGsA3A877GdSlU0LRVMCTH/+P3o2iDTak+S08V2+A=="
+      },
+      "xunit.abstractions": {
+        "type": "Transitive",
+        "resolved": "2.0.3",
+        "contentHash": "pot1I4YOxlWjIb5jmwvvQNbTrZ3lJQ+jUGkGjWE3hEFM0l5gOnBWS+H3qsex68s5cO52g+44vpGzhAt+42vwKg=="
+      },
+      "lambdatale": {
+        "type": "Project",
+        "dependencies": {
+          "xunit.extensibility.core": "[2.9.3, )"
+        }
+      },
+      "xunit.extensibility.core": {
+        "type": "CentralTransitive",
+        "requested": "[2.9.3, )",
+        "resolved": "2.9.3",
+        "contentHash": "kf3si0YTn2a8J8eZNb+zFpwfoyvIrQ7ivNk5ZYA5yuYk1bEtMe4DxJ2CF/qsRgmEnDr7MnW1mxylBaHTZ4qErA==",
+        "dependencies": {
+          "xunit.abstractions": "2.0.3"
+        }
+      }
+    },
+    "net8.0": {
       "MinVer": {
         "type": "Direct",
         "requested": "[6.0.0, )",

diff --git a/src/LambdaTale/LambdaTale.nuspec b/src/LambdaTale/LambdaTale.nuspec
@@ -21,6 +21,10 @@
         <dependency id="xunit.core" version="[2.9.3, 2.10)" />
         <dependency id="xunit.extensibility.execution" version="[2.9.3, 2.10)" />
       </group>
+      <group targetFramework="netstandard2.0">
+        <dependency id="xunit.core" version="[2.9.3, 2.10)" />
+        <dependency id="xunit.extensibility.execution" version="[2.9.3, 2.10)" />
+      </group>
     </dependencies>
   </metadata>
   <files>
@@ -37,5 +41,11 @@
     <file src="bin\Release\$SupportedFrameworkVersion$\LambdaTale.xml" target="lib\$SupportedFrameworkVersion$" />
     <file src="..\LambdaTale.Execution\bin\Release\$SupportedFrameworkVersion$\LambdaTale.Execution.dll" target="lib\$SupportedFrameworkVersion$" />
     <file src="..\LambdaTale.Execution\bin\Release\$SupportedFrameworkVersion$\LambdaTale.Execution.pdb" target="lib\$SupportedFrameworkVersion$" />
+
+    <file src="bin\Release\netstandard2.0\LambdaTale.dll" target="lib\netstandard2.0" />
+    <file src="bin\Release\netstandard2.0\LambdaTale.pdb" target="lib\netstandard2.0" />
+    <file src="bin\Release\netstandard2.0\LambdaTale.xml" target="lib\netstandard2.0" />
+    <file src="..\LambdaTale.Execution\bin\Release\netstandard2.0\LambdaTale.Execution.dll" target="lib\netstandard2.0" />
+    <file src="..\LambdaTale.Execution\bin\Release\netstandard2.0\LambdaTale.Execution.pdb" target="lib\netstandard2.0" />
   </files>
 </package>
diff --git a/src/LambdaTale/packages.lock.json b/src/LambdaTale/packages.lock.json
@@ -29,7 +29,49 @@
         "contentHash": "pot1I4YOxlWjIb5jmwvvQNbTrZ3lJQ+jUGkGjWE3hEFM0l5gOnBWS+H3qsex68s5cO52g+44vpGzhAt+42vwKg=="
       }
     },
-    "net6.0": {
+    ".NETStandard,Version=v2.0": {
+      "Microsoft.CodeAnalysis.PublicApiAnalyzers": {
+        "type": "Direct",
+        "requested": "[4.14.0, )",
+        "resolved": "4.14.0",
+        "contentHash": "5zBDSa8D1pfn5VyDzRekcYdVx/DGAzwegblVJhzdN0kvPt97TPr12haA6ZG0wS2WgBb1W42GeZJRiRtlNaoY1w=="
+      },
+      "MinVer": {
+        "type": "Direct",
+        "requested": "[6.0.0, )",
+        "resolved": "6.0.0",
+        "contentHash": "+/SsmiySsXJlvQLCGBqaZKNVt3s/Y/HbAdwtop7Km2CnuZbaScoqkWJEBQ5Cy9ebkn6kCYKrHsXgwrFdTgcb3g=="
+      },
+      "NETStandard.Library": {
+        "type": "Direct",
+        "requested": "[2.0.3, )",
+        "resolved": "2.0.3",
+        "contentHash": "st47PosZSHrjECdjeIzZQbzivYBJFv6P2nv4cj2ypdI204DO+vZ7l5raGMiX4eXMJ53RfOIg+/s4DHVZ54Nu2A==",
+        "dependencies": {
+          "Microsoft.NETCore.Platforms": "1.1.0"
+        }
+      },
+      "xunit.extensibility.core": {
+        "type": "Direct",
+        "requested": "[2.9.3, )",
+        "resolved": "2.9.3",
+        "contentHash": "kf3si0YTn2a8J8eZNb+zFpwfoyvIrQ7ivNk5ZYA5yuYk1bEtMe4DxJ2CF/qsRgmEnDr7MnW1mxylBaHTZ4qErA==",
+        "dependencies": {
+          "xunit.abstractions": "2.0.3"
+        }
+      },
+      "Microsoft.NETCore.Platforms": {
+        "type": "Transitive",
+        "resolved": "1.1.0",
+        "contentHash": "kz0PEW2lhqygehI/d6XsPCQzD7ff7gUJaVGPVETX611eadGsA3A877GdSlU0LRVMCTH/+P3o2iDTak+S08V2+A=="
+      },
+      "xunit.abstractions": {
+        "type": "Transitive",
+        "resolved": "2.0.3",
+        "contentHash": "pot1I4YOxlWjIb5jmwvvQNbTrZ3lJQ+jUGkGjWE3hEFM0l5gOnBWS+H3qsex68s5cO52g+44vpGzhAt+42vwKg=="
+      }
+    },
+    "net8.0": {
       "Microsoft.CodeAnalysis.PublicApiAnalyzers": {
         "type": "Direct",
         "requested": "[4.14.0, )",

diff --git a/targets/Program.cs b/targets/Program.cs
@@ -44,6 +44,9 @@
 static IEnumerable<string> TargetFrameworks()
 {
     var data = Assembly.GetExecutingAssembly().GetCustomAttributes<AssemblyMetadataAttribute>();
+    yield return "netcoreapp3.1";
+    yield return "net5.0";
+    yield return "net6.0";
     yield return data.Single(d => d.Key == "SupportedDotnetVersion").Value;
     yield return data.Single(d => d.Key == "LatestDotnetVersion").Value;
     if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))

diff --git a/tests/LambdaTale.Test/LambdaTale.Test.csproj b/tests/LambdaTale.Test/LambdaTale.Test.csproj
@@ -3,7 +3,7 @@
   <PropertyGroup>
     <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
     <RollForward>major</RollForward>
-    <TargetFrameworks>$(SupportedDotnetVersion);$(SupportedFrameworkVersion);$(LatestDotnetVersion)</TargetFrameworks>
+    <TargetFrameworks>$(SupportedDotnetVersion);$(SupportedFrameworkVersion);$(LatestDotnetVersion);netcoreapp3.1;net5.0;net6.0</TargetFrameworks>
   </PropertyGroup>
 
   <ItemGroup>