[Nix-dev] (newbie) nix-env custom package installation

[Michael Raskin]

>Hello!
>
>I'm running in circles. I can't install a self-written derivation that I 
>haven't written into all-packages.nix. Manual only has samples where a 
>package is present in all-packages.nix. I don't want to touch this file yet.

most simple cases are handled by my script 
/etc/nixos/nixpkgs/maintainers/scripts/nix-call-package

>So I have written rhash.nix:
>
>{stdenv, fetchurl, openssl ? null}:
>

Yup, arguments seem to be auto-findable

>
>If that means something, I have NixOS installed inside VMWare Server 
>(it's free, BTW).

Currently free of charge, you mean? Yes, I guess most people here knows.