dotnet: make SDK 6.0 default

should not cause any trouble since all packages should use pinned
versions via either of these:
- `dotnet-sdk = dotnetCorePackages.sdk_5_0`
- `dotnet-sdk_5`

pkgs/development/compilers/dotnet/default.nix

@@ -17,9 +17,9 @@ rec {
 
   # EOL
 
-  sdk_2_1 = throw "Dotnet SDK 2.1 is EOL, please use 3.1 (LTS) or 5.0 (Current)";
-  sdk_2_2 = throw "Dotnet SDK 2.2 is EOL, please use 3.1 (LTS) or 5.0 (Current)";
-  sdk_3_0 = throw "Dotnet SDK 3.0 is EOL, please use 3.1 (LTS) or 5.0 (Current)";
+  sdk_2_1 = throw "Dotnet SDK 2.1 is EOL, please use 3.1 (LTS), 5.0 (Current) or 6.0 (LTS)";
+  sdk_2_2 = throw "Dotnet SDK 2.2 is EOL, please use 3.1 (LTS), 5.0 (Current) or 6.0 (LTS)";
+  sdk_3_0 = throw "Dotnet SDK 3.0 is EOL, please use 3.1 (LTS), 5.0 (Current) or 6.0 (LTS)";
 
   # v3.1 (LTS)
 
@@ -79,7 +79,7 @@ rec {
     };
   };
 
-  # v6.0
+  # v6.0 (LTS)
 
   aspnetcore_6_0 = buildAspNetCore {
     version = "6.0.0";

pkgs/top-level/all-packages.nix

@@ -422,9 +422,9 @@ with pkgs;
   dotnet-sdk_5 = dotnetCorePackages.sdk_5_0;
   dotnet-sdk_6 = dotnetCorePackages.sdk_6_0;
 
-  dotnet-sdk = dotnetCorePackages.sdk_5_0;
-  dotnet-runtime = dotnetCorePackages.runtime_5_0;
-  dotnet-aspnetcore = dotnetCorePackages.aspnetcore_5_0;
+  dotnet-sdk = dotnetCorePackages.sdk_6_0;
+  dotnet-runtime = dotnetCorePackages.runtime_6_0;
+  dotnet-aspnetcore = dotnetCorePackages.aspnetcore_6_0;
 
   dumb-init = callPackage ../applications/virtualization/dumb-init {};