Here are some installation methods.
If the version you get this way is too old, the two following methods will give you access to the latest version.
nix-du is available in nixpkgs >= 18.09-pre, see the badge below.
If the channel you follow is not recent enough:
nix-env -f channel:nixos-unstable -iA nix-du
nix-du is only tested to build on the latest NixOS stable version and NixOS unstable.
Notably, this implies you need a less than six month old rust version. Currently
nix-du is known to need at least rustc >= 1.82. Semantic versionning is
slightly fuzzy with executables (as opposed to libraries) but bumping the
minimum required version of rustc is not considered a breaking change.
You need nix version 2 and boost (a dependency of nix). lix can be used instead of nix.
Tests need dot in $PATH. Tests are known to non-deterministically fail with
nix < 2.1.
Note that nix 2 is only needed to build nix-du; nix-du should be able to talk to a
nix 1 daemon.
$ nix-env -if https://github.com/symphorien/nix-du/archive/master.tar.gz
This is tested to work on the current stable release of nixpkgs and nixos-unstable.
If your channel is older, you can use nixos-unstable instead this way:
$ nix-env -I nixpkgs=https://nixos.org/channels/nixos-unstable/nixexprs.tar.xz -if https://github.com/symphorien/nix-du/archive/master.tar.gz
Run cargo build --release at the root of the repository.
To get all dependencies in scope, at the root of the repository, run
nix-shell.