Checking for whether production dependencies exist before trying to copy over

Author: CMCDragonkai

default.nix

@@ -46,7 +46,9 @@ let
     # copy only the dist
     cp -r ${node2nixDev}/lib/node_modules/${node2nixDev.packageName}/dist $out/lib/node_modules/${node2nixDev.packageName}/
     # copy over the production dependencies
-    cp -r ${node2nixProd}/lib/node_modules $out/lib/node_modules/${node2nixDev.packageName}/
+    if [ -d "${node2nixProd}/lib/node_modules" ]; then
+      cp -r ${node2nixProd}/lib/node_modules $out/lib/node_modules/${node2nixDev.packageName}/
+    fi
     # create symlink to the deployed executable folder, if applicable
     if [ -d "${node2nixDev}/lib/node_modules/.bin" ]; then
       cp -r ${node2nixDev}/lib/node_modules/.bin $out/lib/node_modules/