Suppose i've got a zip file available under some URL. I need to get its hash, which should be identical to the one output by nix-prefetch-url --unpack <URL>, but without a working Nix installation. How can one do it?
Seems there is no easy way, as nix-prefetch-url adds the file to the store. More details here: https://discourse.nixos.org/t/generate-a-file-hash-similar-to-the-one-output-by-nix-prefetch-url/19907 (many thanks to prompt and thorough community member's response)