akirill0v

Nix on macOS Catalina

I'm writing this gist for my own records but it might help someone else too.

Installing Nix

Support for Catalina has improved a lot since the update was first rolled out.

Note: See the NixOS manual for discussion of the --darwin-use-unencrypted-nix-store-volume option.

akirill0v

# Instructions for fresh install

$ sh <(curl -L https://nixos.org/nix/install) --darwin-use-unencrypted-nix-store-volume --daemon
# reboot
$ source /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh
$ echo 'export NIX_PATH=darwin-config=$HOME/.nixpkgs/darwin-configuration.nix:$HOME/.nix-defexpr/channels${NIX_PATH:+:}$NIX_PATH' | tee -a ~/.zshrc
$ echo 'source $HOME/.nix-profile/etc/profile.d/hm-session-vars.sh' | tee -a ~/.zshrc
$ nix-channel --add https://nixos.org/channels/nixpkgs-unstable
$ nix-channel --add https://github.com/LnL7/nix-darwin/archive/master.tar.gz darwin
$ nix-channel --add https://github.com/nix-community/home-manager/archive/master.tar.gz home-manager

akirill0v

-- show running queries (pre 9.2)
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query 
FROM pg_stat_activity 
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%' 
ORDER BY query_start desc;

-- show running queries (9.2)
SELECT pid, age(clock_timestamp(), query_start), usename, query 
FROM pg_stat_activity 
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%' 

akirill0v

#!/bin/bash
MAC=false
date -r "$now" +%Y-%m-%d &> /dev/null
if [ "$?" -ne "0" ]; then echo "LINUX"; MAC=false; else echo 'MAC'; MAC=true; fi

now=`date +%s`

while true
do
  if [ "$MAC" == "true" ]; then data=`date -r "$now" +%Y-%m-%d`; else data=`date -d @"$now" +%Y-%m-%d`; fi

akirill0v

class BasketController
  def add_to_basket
    item = Item.find_by_title(params[:item_title])

    basket = $basket

    basket.add_item(item)

    if basket.count_items > 10
      basket.error_messages.add("Слишком много товаров в корзине")

akirill0v

Chromium OS ft. Docker

Chromium OS is cool. Chromium OS with crouton is cooler. Chromium OS with Docker is even cooler. This is specifically a guide for the HP Chromebook 13 G1 (aka HP Spyder Chromebook), but I can't think of any reason it wouldn't work with other devices. The Chromebook Pixel 2 (2015), for example...as you'll notice, the guide this was forked from assumed that machine.

1. Create a build environment
2. Customize the kernel
3. Build Chromium OS
4. Flash Chromium OS to USB
5. Install Chromium OS

akirill0v

MIT License

Copyright (c) [year||from_year-to_year] [author's fullname]

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

akirill0v

#!/usr/bin/env sh
# pre-commit.sh

STASH_NAME="pre-commit-$(date +%s)"
ROOT_DIR="$(git rev-parse --show-toplevel)"
BUILD_DIR="${ROOT_DIR}/target"
BRANCH_NAME=$(git branch | grep '*' | sed 's/* //')
RED='\033[1;31m'
GREEN='\033[1;32m'
YELLOW='\033[1;33m'

akirill0v

State: Draft
Based on the Peatio Stable branch

---

Coin Daemon

To the coin daemon's {coin}.conf file, include the -walletnotify command:

# Notify when receiving coins

akirill0v

language: ruby
rvm:
  - 2.2.2

database:
  - cp mongoid.yml.example mongoid.yml
  - bundle exec db:create db:migrate

services:
  - redis