Yes, you are correct. Nix is a purely functional package manager and environment manager designed for reproducible builds of software packages across different systems and platforms. It does not include the ability to run dynamic binaries or dynamically linked libraries without first building them using a Nix build script.

To use a package with a dynamically linked binary in Nix, you would need to write a Nix expression (a nix-build file) to compile the source code and generate a statically linked executable or create a "Nix shell" that uses your compiled executable as part of its runtime environment. This process involves specifying all of the dependencies required by the executable and their versions, along with any necessary patches or modifications to make everything work together correctly.

Once you have created this "shell", it can then be used as a basis for other Nix environments or passed around between users who want to install the same system configuration on their own machines. The resulting package includes both the executable and all of its dependencies, ensuring that everything works correctly and consistently regardless of which platform the package is installed on.
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