Modify things and test around

Options are always passed to memoir, even if I don't want them to, like 8pt...

York-Thesis/thesisoptions.sty

@@ -23,6 +23,13 @@
 % https://git.tigrau.ovh/Ambroise/LaTeX-Templates/.
 
 \ProvidesPackage{thesisoptions}[2022/07/08 v1.0 Options for the York Thesis class]
+\@ifundefined{is@uoyth@classloaded}{
+		\PackageError{thesisoption}{
+		  This package should only be used if the uoythesis class is used
+		}{
+		  Verify that you are indeed using the uoythesis class, or remove the loading of this package
+		}  % make error
+	}{ } % silently pass
 
 %%% ==== Fonts
 \usepackage[utf8]{inputenc}  % Allow unicode input
@@ -118,3 +125,5 @@
 %%%% ==== DEBUG
 % If you want the version of the packages you use appear when they load in the log file, uncomment the following line:
 \listfiles
+
+\endinput