Ryan Mulligan ryantm

~/nixfiles (master)$ NIX_PATH=nixpkgs=https://nixos.org/channels/nixpkgs-unstable/nixexprs.tar.xz nix-build '<nixpkgs>' -A chromium                                                                   
downloading ‘https://nixos.org/channels/nixpkgs-unstable/nixexprs.tar.xz’... ^[[1D [0/0 KiB, 0.0 KiB/s]^[[21D [0/7517 KiB, 0.0 KiB/s]^[[24D [464/7517 KiB, 213.4 KiB/s]^[[28D [4592/7517 KiB, 1446.4 KiB/s]        
unpacking ‘https://nixos.org/channels/nixpkgs-unstable/nixexprs.tar.xz’...      |                                                                                                                                  
these derivations will be built:                                                |                                                                                                                                  
  /nix/store/l9z7lw7a9kfy1535x36cqpg5ki63sijc-chromium-52.0.2743.116.drv        |

	#$ chruby ruby-2.2.0
	#$ ruby this_file.rb

	class A
	def <=>(other)
	nil
	end
	end

	A.new <=> A.new #no error

	ryantm@rtmnix ~ (master)$ sudo nixos-rebuild switch --upgrade
	[sudo] password for ryantm:
	downloading Nix expressions from ‘https://nixos.org/releases/nixos/unstable/nixos-15.05pre61966.75ebc3c/nixexprs.tar.xz’...
	% Total % Received % Xferd Average Speed Time Time Time Current
	Dload Upload Total Spent Left Speed
	0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
	unpacking channels...
	building Nix...
	building the system configuration...
	updating GRUB 2 menu...

	spacefm

	(.spacefm-wrapped:6320): WARNING : Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files

	(.spacefm-wrapped:6320): WARNING : No root settings found in /etc/spacefm/ Setting a root editor in Preferences should remove this warning on startup. Otherwise commands run as root may present a security risk.

	(.spacefm-wrapped:6320): Gtk-WARNING **: Could not find the icon 'spacefm'. The 'hicolor' theme
	was not found either, perhaps you need to install it.
	You can get a copy from:
	http://icon-theme.freedesktop.org/releases

	ryantm@home1 ~/p/nixpkgs-channels (nixos-unstable)$ nix-env -f . -iA opencc
	installing ‘opencc-1.0.3’
	these derivations will be built:
	/nix/store/r8wz0kfj5k999cy09p0spwh4sqili730-opencc-1.0.3.drv
	building path(s) ‘/nix/store/h8iicppcd1i9jcww2iw81gmdk98dxrka-opencc-1.0.3’
	unpacking sources
	unpacking source archive /nix/store/9066ds73yqsa7lgfllgxmx1aclyk4grl-ver.1.0.3.tar.gz
	source root is OpenCC-ver.1.0.3
	patching sources
	configuring

	{-# LANGUAGE FunctionalDepedencies #-}

	data Account
	= Account {accountId :: !Int,
	productCd :: !String,
	custId :: !Int,
	openDate :: !Day,
	closeDate :: !(Maybe Day),
	lastActivityDate :: !(Maybe Day),
	status :: !String,

	nix-build
	error: cannot auto-call a function that has an argument without a default value (‘mkDerivation’)

	output path ‘/nix/store/q7aq9f95rnybb1snsif9271139vgsjvg-git-export’ should have r:sha256 hash ‘1l4r55n1wzr817l225l6pm97li1mxg9icd8s51cpfihh91nkdz68’, instead has ‘0q7cjmz1fsrw3yfsr3h274qjamwnw01xgaqq3h5cjbqlrni4iq7k’
	cannot build derivation ‘/nix/store/jax9rqzrp6aq8q5jjxdavagp7mqgcbgn-ruby-2.1.3-p0-bundler-HEAD.drv’: 1 dependencies couldn't be built

	{-# LANGUAGE DataKinds, KindSignatures, MultiParamTypeClasses,
	FunctionalDependencies, FlexibleInstances,
	OverloadedLabels, ScopedTypeVariables,
	TemplateHaskell #-}
	import Test2

	--instance Has Point "x" Int where from (Point x _) _ = x
	deriveI "x"

	example = #x (Point 1 2)

	#!/bin/bash
	# Copyright 2013 Percona LLC and/or its affiliates
	# @see https://www.percona.com/blog/2013/12/24/renaming-database-schema-mysql/
	set -e
	if [ -z "$3" ]; then
	echo "rename_db <server> <database> <new_database>"
	exit 1
	fi
	db_exists=`mysql -h $1 -e "show databases like '$3'" -sss`
	if [ -n "$db_exists" ]; then