In reply to @hexa:lossy.network
@dish [Fox/It/She] thanks for your persistence in this matter

was able to pick up on this again, and able to move forward by splitting out the subpackages into their own npmBuildPackage modules. But now run this:

error: Cannot build '/nix/store/rz8xy8azk6rqljygb8xh0mx3hqnc19ci-internal-ui-1.52.2.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/llw47jbqbvb8zdza926ikdrsca92y37h-internal-ui-1.52.2
       Last 25 log lines:
       >
       > vite v6.3.5 building for production...
       > ✓ 0 modules transformed.
       > ✗ Build failed in 3ms
       > error during build:
       > [typescript] [plugin typescript] @rollup/plugin-typescript: Could not find module 'tslib', which is required by this plugin. Is it installed?

man, adapting the node ecoystem to nix is quite difficult