Decouple save file path from config directory (closes #1025)

Signed-off-by: AnErrupTion <anerruption@disroot.org>

src/config/migrator.zig

@@ -2,6 +2,7 @@
 // Properties removed or changed since 0.6.0
 // Color codes interpreted differently since 1.1.0
 
+const build_options = @import("build_options");
 const std = @import("std");
 var temporary_allocator = std.heap.page_allocator;
 
@@ -194,6 +195,19 @@ pub fn configFieldHandler(_: std.mem.Allocator, field: ini.IniField) ?ini.IniFie
         return null;
     }
 
+    if (std.mem.eql(u8, field.key, "save")) {
+        // The option now uses a string for the file's parent directory
+        var mapped_field = field;
+
+        if (std.mem.eql(u8, field.value, "true")) {
+            mapped_field.value = build_options.config_directory ++ "/ly";
+        } else if (std.mem.eql(u8, field.value, "false")) {
+            mapped_field.value = "null";
+        }
+
+        return mapped_field;
+    }
+
     // TODO: Dearest Melpert,
     //      I pray this message finds you well, as daylight dwindles and the witching hour
     //      approaches, I find it more and more imperative as time continues that I place