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Setting up qemu VM using nix flakes

Did you know that it is rather easy to setup a VM to test your NixOs configuration?

Create simple flake:

# flake.nix
{
  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";

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# I found some good resources but they seem to do a bit too much (maybe from a time when there were more bugs).
# So here's a minimal Gist which worked for me as an install on a new M1 Pro.
# Inspired by https://github.com/malob/nixpkgs I highly recommend looking at malob's repo for a more thorough configuration
#
# Let's get started
#
# Let's install nix (at the time of writing this is version 2.5.1
curl -L https://nixos.org/nix/install | sh

# I might not have needed to, but I rebooted

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# For linux python 3 instructions see https://gist.github.com/softwaredoug/a871647f53a0810c55ac

# Install python manager
brew install pyenv

# Install virtual environment manager
brew install pyenv-virtualenv

# Update your .zshrc

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function saveSomething(something, callback){
  var saved = righto(saveValue, something);
  var updatedLastSavedTime = righto(updateLastSaveTime);
  
  // We want the result of `saved`, but only after `updatedLastSavedTime` succeeds.
  var result = righto.after(saved, updatedLastSavedTime);

  result(callback);
}

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JavaScript Classes - ES5 vs ES6

An example that shows the difference between creating a JavaScript class and subclass in ES5 and ES6.

Reference

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function bindContext(object){
    return new Proxy({
        get: function(target, key){
            if(typeof target[key] === 'function' && !target.hasOwnProperty(key)){
                return target[key].bind(target);
            }

            return target[key];
        }
    });

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// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console