Fix versions and add 'modern' configuration

dub.sdl

@@ -10,3 +10,10 @@ dependency "sdlang-d" version="~>0.10.5"
 preGenerateCommands "./generate-package-version.fish"
 versions "VibeDefaultMain"
 targetPath "out"
+
+configuration "application" {
+}
+
+configuration "modern" {
+    versions "BasicFixes" "SupportTLS"
+}

dub.selections.json

@@ -1,14 +1,14 @@
 {
 	"fileVersion": 1,
 	"versions": {
-		"eventcore": "0.8.48",
-		"libasync": "0.8.5",
+		"eventcore": "0.8.50",
+		"libasync": "0.8.6",
 		"memutils": "1.0.4",
-		"sdlang-d": "0.10.5",
+		"sdlang-d": "0.10.6",
 		"stdx-allocator": "2.77.5",
-		"taggedalgebraic": "0.11.8",
+		"taggedalgebraic": "0.11.18",
 		"unit-threaded": "0.7.55",
 		"vibe-core": "1.8.1",
-		"vibe-d": "0.9.0-alpha.1"
+		"vibe-d": "0.9.2"
 	}
 }

source/ircd/versions.d

@@ -3,27 +3,30 @@ module ircd.versions;
 /++
     Supported versions:
 
-    * NotStrict: enabled when any versions are enabled that disable RFC-strictness (i.e. any of the following)
-    * SupportTLS: compile with TLS support, enabled when NotStrict is on
+    * SupportTLS: compile with TLS support
     * BasicFixes: enable basic/sanity RFC fixes
     * MaxNickLengthConfigurable: makes max nick length configurable
     * Modern: enable all versions
+
+    (* NotStrict: enabled when any versions are enabled that disable RFC-strictness, i.e. any of the above)
 +/
 
+version (Modern)
+{
+    version = SupportTLS;
+    version = BasicFixes;
+    version = MaxNickLengthConfigurable;
+}
+
 version (SupportTLS) version = NotStrict;
 version (BasicFixes) version = NotStrict;
 version (MaxNickLengthConfigurable) version = NotStrict;
 
 version (NotStrict)
 {
-    version = SupportTLS;
-}
-
-version (Modern)
-{
-    version = NotStrict;
-
-    version = SupportTLS;
-    version = BasicFixes;
-    version = MaxNickLengthConfigurable;
+    version (SupportTLS) {}
+    else
+    {
+        static assert(false, "TLS support must be enabled if any non-strict versions are enabled.");
+    }
 }