Adrian adrian-gierakowski

Expression for a buildEnv-based declarative user environment

This is one way of managing your user profile declaratively.

Alternatives include:

an attrset-based nix-env-based environment, installed using nix-env -ir rather than nix-env --set. LnL has an overlay which shows a way of doing this.
home-manager, which provides NixOS-like config for your $HOME

Note that this is incompatible with regular imperative use of nix-env, e.g. nix-env -iA nixpkgs.hello. It has the advantage of allowing the installation of multiple outputs of the same package much better than nix-env's builtin profile builder does.

Nix builder for Kubernetes

Table of Contents

Nix builder for Kubernetes
- Overview
- Why?
How?

git commit stats

Commands to get commit statistics for a Git repository from the command line -
using git log, git shortlog and friends.

NOTE: a more up-to-date version of this can be found on my blog

nix-shell and Shebang Lines

A few days ago, version 1.9 of the Nix package manager was released. From the release notes:

nix-shell can now be used as a #!-interpreter. This allows you to write scripts that dynamically fetch their own dependencies.

	Lots of goodies like <githubstatus> pinging.
	https://github.com/input-output-hk/iohk-ops/blob/bc8195de286d8b9b55b06f2046ab5412307a51b6/modules/hydra-master-common.nix

	Declarative jobset bootstrapping:
	https://github.com/shlevy/declarative-hydra-example

	Declarative jobset with Git PR evals:
	https://github.com/cleverca22/hydra-configs/tree/master/toxvpn

	Other notes:


	let _ = global._ = require("lodash");
	let Benchmark = global.Benchmark = require("benchmark");
	let Promise = require("bluebird");

	let { Map } = require("immutable");
	let { produce } = require("immer");

	function getItems(count) {
	let id = 1;

	with import ./. {};

	let

	extraSources = [];
	lib = pkgs.lib;

	optionsListVisible =
	lib.filter (opt: opt.visible && !opt.internal)
	(lib.optionAttrSetToDocList options);

	#! /usr/bin/env nix-shell
	#! nix-shell --pure -i runghc -p rsync openssh "haskellPackages.ghcWithPackages (pkgs: [ pkgs.turtle ])"
	{-# LANGUAGE OverloadedStrings #-}
	import Turtle
	import Prelude hiding (FilePath)
	import qualified Data.Text as T

	sshOpts :: [Text]
	sshOpts = ["-o", "StrictHostKeyChecking=accept-new"]

	self: super:

	{
	# Install overlay:
	# $ mkdir -p ~/.config/nixpkgs/overlays
	# $ curl https://gist.githubusercontent.com/LnL7/570349866bb69467d0caf5cb175faa74/raw/3f3d53fe8e8713ee321ee894ecf76edbcb0b3711/lnl-overlay.nix -o ~/.config/nixpkgs/overlays/lnl.nix
	userPackages = super.userPackages or {} // {

	# Example:
	hello = self.hello;

	rec {
	test1 = builtins.scopedImport { __nixPath = [ { path = test4; prefix="ssh-config-file"; } ] ++ __nixPath; };
	test2 = test1 <nixpkgs/pkgs/build-support/fetchgit/private.nix>;
	pkgs = import <nixpkgs> {};
	test3 = pkgs.callPackage test2 {};
	test4 = pkgs.writeText "sshd_config" ''
	# empty file, use programs.ssh.knownHosts in configuration.nix not StrictHostKeyChecking no
	'';
	test5 = test3 {
	url = "[email protected]:cleverca22/not-os.git";