nix-tree: Interactively browse a Nix store paths dependencies

[ bsd3, language.nix, program ] [ Propose Tags ]

A terminal curses application to browse a Nix store paths dependencies

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Versions [RSS],,,,, 0.1.4, 0.1.5, 0.1.6, 0.1.7, 0.1.8, 0.1.9, 0.2.0, 0.2.1, 0.3.0, 0.3.1, 0.3.2, 0.3.3, 0.4.0, 0.4.1
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Dependencies aeson, async, base (>=4.11 && <5), brick (>=2.1 && <2.4), bytestring, clock, containers, directory, dot, filepath, hrfsize, microlens, optparse-applicative, relude, terminal-progress-bar, text, typed-process, unordered-containers, vty [details]
License BSD-3-Clause
Copyright Utku Demir
Author Utku Demir
Maintainer Utku Demir
Category Language.Nix
Home page
Uploaded by utdemir at 2024-04-07T10:14:52Z
Distributions NixOS:0.4.0
Executables nix-tree
Downloads 2042 total (82 in the last 30 days)
Rating (no votes yet) [estimated by Bayesian average]
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Status Docs not available [build log]
Last success reported on 2024-04-07 [all 1 reports]

Readme for nix-tree-0.4.1

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Build Status Packaging status

Interactively browse dependency graphs of Nix derivations.



nix-tree is on nixpkgs since 20.09, so just use your preferred method for adding packages to your system, eg:

nix-env -iA nix-tree

Or, for flake enabled systems:

nix profile install 'nixpkgs#nix-tree'

To run the current development version:

nix run github:utdemir/nix-tree -- --help


$ nix-tree --help
Usage: nix-tree [INSTALLABLE] [--store STORE] [--version] [--derivation] [--impure] [--dot]

  Interactively browse dependency graphs of Nix derivations.

Available options:
  INSTALLABLE              A store path or a flake reference.
                           Paths default to "~/.nix-profile" and "/var/run/current-system"
  --store STORE            The URL of the Nix store, e.g. "daemon" or ""
                           See "nix help-stores" for supported store types and settings.
  --version                Show the nix-tree version
  --derivation             Operate on the store derivation rather than its outputs
  --impure                 Allow access to mutable paths and repositories
  --dot                    Print the dependency graph in dot format
  -h,--help                Show this help text

  hjkl/Arrow Keys : Navigate
  w               : Open why-depends mode
  /               : Open search mode
  s               : Change sort order
  y               : Yank selected path to clipboard
  ?               : Show help
  q/Esc           : Quit / close modal


  • NAR Size: Size of the store path itself.
  • Closure size: Total size of the store path and all its transitive dependencies.
  • Added size: Size of the store path, and all its unique transitive dependencies. In other words, the cost of having that store path on top of all other paths. See issue #14 for a better explanation.


nix-build prints built paths to stdout, which can be piped conveniently with | xargs -o nix-tree. Examples:

# Output of a local derivation
nix-build . --no-out-link | xargs -o nix-tree

# Build time dependencies (passing a `.drv` path)
nix-instantiate . | xargs -o nix-tree --derivation

# Dependencies from shell.nix
nix-build shell.nix -A inputDerivation | xargs -o nix-tree

# All outputs of a derivation in nixpkgs
nix-build '<nixpkgs>' -A openssl.all --no-out-link | xargs -o nix-tree

nix-tree also supports flake references:

# Build time dependencies of a flake on the current directory
nix-tree --derivation '.#'

# Same thing works for any flake reference
nix-tree --derivation 'nixpkgs#asciiquarium'

Run nix-tree on your current nixos system:

nix-tree /nix/var/nix/profiles/system

Query the binary cache before download, with the --store option:

# Query the runtime dependency of `stellarium` (2 GiB closure) without download
nix eval --raw 'nixpkgs#stellarium.outPath' | xargs -o nix-tree --store

For valid --store options, see nix help-stores. For example,

# Build in a temporary chroot store and examine the output
nix build --store /tmp/chroot-store 'nixpkgs#hello' --print-out-paths | xargs -o nix-tree --store /tmp/chroot-store


All contributions, issues and feature requests are welcome.

To hack on it, simply run nix-shell and use cabal as usual. Please run ./ before sending a PR.

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