Исключения core вынесены в отдельный модуль exception

source/snag/core/core.d

@@ -4,20 +4,11 @@ import snag.config;
 import std.format;
 import std.stdio;
 import std.array;
-import std.exception;
 import std.process;
 import std.algorithm;
 import std.string;
 
-class SnagException : Exception {
-	this(string msg, string file = __FILE__, size_t line = __LINE__) {
-		super(msg, file, line);
-	}
-
-	void print() {
-		writeln(msg);
-	}
-}
+import snag.core.exception;
 
 class Snag {
 	private string[] _baseCommand;

source/snag/core/exception.d

@@ -0,0 +1,14 @@
+module snag.core.exception;
+
+import std.exception;
+import std.stdio;
+
+class SnagException : Exception {
+	this(string msg, string file = __FILE__, size_t line = __LINE__) {
+		super(msg, file, line);
+	}
+
+	void print() {
+		writeln(msg);
+	}
+}

source/snag/core/package.d

@@ -1,3 +1,4 @@
 module snag.core;
 
 public import snag.core.core;
+public import snag.core.exception;