[xyzzy_plugh]

The pain I run into is that I very frequently need to use buildFHSUserEnv and it's just cumbersome enough that it's almost easier to not use Nix at all. It would be nice if there was a way to make this "just work". steam-run feels very hacky and I am loathe to use it in production, though I admit I've used it a lot.

Rewriting the library paths for a given binary also works but is cumbersome.

Ideally there would be a few extra tools in Nix to say "adopt this binary" in a similar way we can install things into our environment permanently, and to transform a binary to look for dependencies in the right places.