Have you tried compiling software with a nix shell? It gets linked to the Nix store. Needless to say it was a frustrating revelation.
conceptually a game changer for me. In practice it's far from a silver bullet (because every language prefers its own package management so you still have to manage those), but when it works it's quite magical.
Or was the issue that you expected them to be portable? Or use commonly known dynamic library locations?
I was more or less pointing out the UX issues with Nix that end up turning many people away.
For example I tried to run pip install yesterday on MemGPT on Nix.
It failed with a C++ error because they use miniconda.
I just created a nix shell with python, pip, etc and ran the pip install command.
Things work fine.
I fell down the Nix rabbit hole, and miniconda was one of the worst things to get working. My first pass used an FHS environment, but eventually I just got the environment.yml file working in micromamba and used that instead. Except micromamba ships it's own linker that I had to override with SHAREDLD, or some random python c++ dependencies wouldn't compile correctly.
I love Nix, but my list of complaints is a mile long. If you want to do anything with opengl in nix, but not on nixos, just give up. NixGl just doesn't really work.
Good luck getting something like Poky (Reference project for Yocto) running in Nix. The only working example puts it in an FHS environment, which uses bubble wrap under the hood. But then because you're in a container with permissions dropped, you can't use a vm. The solution I see in the support forums is roll your own alternative FHS environment based on something else.
/Rant