Link to individual dependency files in Bookwyrm package

This enables dependencies with overlapping directory structures to be merged correctly.

packages/bookwyrm/package.nix

@@ -26,7 +26,7 @@ mkDerivation {
 	dontBuild = true ;
 
 	installPhase = let
-		dependencies = [
+		pythonDependencies = [
 			aiohappyeyeballs
 			aiohttp
 			aiosignal
@@ -98,9 +98,15 @@ mkDerivation {
 
 		# Python dependencies
 
-		dependencies="${ concatStringsSep " " dependencies }"
+		pythonDependencies="${ concatStringsSep " " pythonDependencies }"
-		for target in $dependencies ; do
+		for package in $pythonDependencies ; do
-			ln -sf $target/lib/python3.11/site-packages/* $out/lib/python3.11/site-packages/
+			for directory in $( sh -c "cd $package/lib/python3.11/site-packages ; find -type d -not -name __pycache__" ) ; do
+				mkdir $out/lib/python3.11/site-packages/$directory
+			done
+
+			for file in $( sh -c "cd $package/lib/python3.11/site-packages ; find -type f" ) ; do
+				ln -s $package/lib/python3.11/site-packages/$file $out/lib/python3.11/site-packages/$file
+			done
 		done
 
 		# Python packages