I'm a Python, Plone, Linux, NixOS, JavaScript... basically everything open-source enthusiast.
Nix's very own graphical UI

I have been working on this project for the last two months and now it is time for some feedback

I have been using NixOS operating system for about two years now, and it is time that I do something more than to package packages and play with Hydra.

At the last year’s NixOS sprint called Zidanca sprint here in Slovenia I had a little joke about making front-end for Nix package manager in JavaScript, well, now it is not a joke any more.

Why JavaScript?

This language had become quite popular lately so I decided to take a look at it, and I like a new challenge.

Technologies used:

  • NodeJS for backend (expressjs)
  • Nix package manager commands (nix-env and nix-instantiate)
  • Web Components for frontend (Polymer)
  • ElasticSearch for search and package cache

Well, let’s start…

There is no npm/nix package made yet, but I am planing to do it when the project reaches right maturity, should be soon.


  • git
  • make
  • Nix package manager
  • Browser

Code is at GitHub so let’s get it and enter the folder

$ git clone https://github.com/matejc/nixui
$ cd nixui

To build the environment (get node, bower and elasticsearch packages) and place links to the right places inside the folder, do not worry this is not going to touch your system

$ make build

This command fires up Nix package manager and installs all the packages in custom environment (make is here just so that you do not have to write a bunch of commands and make appropriate links)

This is going to take a few minutes and when it is done, you should have bin folder (well, a link to it), next, you will have to run ElasticSearch:

$ ./bin/services-nixui-start-services

you can check if it went well with this:

$ cat ./var/log/elasticsearch-*.log

There is only one more step, run the server

$ make develop

If everything went well, you will see the message (wait a few seconds to appear, it has to index all the packages):

NixUI at http://localhost:8000/index.html

Success! Open the browser at


and you should see something like this

first look

This process was tested on NixOS and should work on any Linux distribution with Nix package manager installed.


Searching with wildcard

wildcard search

Search for installed packages with


search install

Web UI has simple authentication for security reasons - if you have server running while some other user is running different session - we do not want that others install packages in your environment.

Click on the package and enter development/testing credentials: user: bob, password: secret

simple auth

On package information window you can mark package for install, click on

button or for removal from marked list, click on
, for unistallation the process is similar (button will appear when you enter credentials).

Manage marked dialog

From the menu (top right) select

Manage Marked ...

manage marked

Here you can apply (install/uninstall) or remove marked packages.

Plans for the future

I will be at the NixOS sprint, well not only that, I am helping to organize it. At the sprint I will be working on your wishes to make this project better.

Managing packages in your user environment is scratching the surface of what you can do with Nix, so I have an idea to visualize and later even edit your main NixOS configuration.nix file as a tree or some other cool structure. Traces of this idea are already in project’s GitHub repository as Nix scripts (src/config_all.nix and src/config_inuse.nix).

Comments and help are much obliged!

And I am available for hire!

This concludes our transmission, I hope you liked it, but stay tuned, project is under development!