fix: allow the CLI to be used in NET6 and NET7

Author: buehler

src/KubeOps.Cli/Certificates/CertificateGenerator.cs

@@ -107,12 +107,11 @@ public static (X509Certificate Certificate, AsymmetricCipherKeyPair Key) CreateS
         certificateGenerator.AddExtension(
             X509Extensions.SubjectAlternativeName,
             false,
-            new GeneralNames(new[]
-            {
+            new GeneralNames([
                 new GeneralName(GeneralName.DnsName, $"{serverName}.{serverNamespace}.svc"),
                 new GeneralName(GeneralName.DnsName, $"*.{serverNamespace}.svc"),
                 new GeneralName(GeneralName.DnsName, "*.svc"),
-            }));
+            ]));
 
         // Subject Public Key
         const int keyStrength = 256;

src/KubeOps.Cli/KubeOps.Cli.csproj

@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net8.0</TargetFramework>
+        <TargetFrameworks>net6.0;net7.0;net8.0</TargetFrameworks>
         <EnablePreviewFeatures>true</EnablePreviewFeatures>
     </PropertyGroup>
 

src/KubeOps.Cli/Options.cs

@@ -17,7 +17,7 @@ internal static class Options
         "The path the command will write the files to. If omitted, prints output to console.");
 
     public static readonly Option<string?> TargetFramework = new(
-        new[] { "--target-framework", "--tfm" },
+        ["--target-framework", "--tfm"],
         description: "Target framework of projects in the solution to search for entities. " +
                      "If omitted, the newest framework is used.");
 
@@ -32,12 +32,12 @@ internal static class Options
                      "If omitted, all projects are searched.");
 
     public static readonly Option<bool> Force = new(
-        new[] { "--force", "-f" },
+        ["--force", "-f"],
         () => false,
         description: "Do not bother the user with questions and just do it.");
 
     public static readonly Option<bool> ClearOutputPath = new(
-        new[] { "--clear-out" },
+        ["--clear-out"],
         () => false,
         description: "Clear the output path before generating resources.");
 }

src/KubeOps.Cli/Transpilation/AssemblyLoader.cs

@@ -1,4 +1,5 @@
-using System.Reflection;
+using System.Diagnostics.CodeAnalysis;
+using System.Reflection;
 using System.Text;
 using System.Text.RegularExpressions;
 
@@ -22,6 +23,10 @@ namespace KubeOps.Cli.Transpilation;
 /// <summary>
 /// AssemblyLoader.
 /// </summary>
+[SuppressMessage(
+    "Usage",
+    "CA2252:This API requires opting into preview features",
+    Justification = "It is the CLI that uses the libraries.")]
 internal static partial class AssemblyLoader
 {
     static AssemblyLoader()
@@ -192,6 +197,10 @@ public static IEnumerable<EntityMetadata> GetConvertedEntities(this MetadataLoad
         .Distinct()
         .Select(t => context.ToEntityMetadata(t.BaseType!.GenericTypeArguments[0]).Metadata);
 
+#if NET7_0_OR_GREATER
     [GeneratedRegex(".*")]
     private static partial Regex DefaultRegex();
+#else
+    private static Regex DefaultRegex() => new(".*");
+#endif
 }

src/KubeOps.Cli/Transpilation/TfmComparer.cs

@@ -7,10 +7,17 @@ namespace KubeOps.Cli.Transpilation;
 /// </summary>
 internal sealed partial class TfmComparer : IComparer<string>
 {
+#if NET7_0_OR_GREATER
     [GeneratedRegex(
         "[(]?(?<tfm>(?<name>(netcoreapp|net|netstandard){1})(?<major>[0-9]+)[.](?<minor>[0-9]+))[)]?",
         RegexOptions.Compiled)]
     public static partial Regex TfmRegex();
+#else
+    public static Regex TfmRegex() =>
+        new(
+            "[(]?(?<tfm>(?<name>(netcoreapp|net|netstandard){1})(?<major>[0-9]+)[.](?<minor>[0-9]+))[)]?",
+            RegexOptions.Compiled);
+#endif
 
     public int Compare(string? x, string? y)
     {