camallen

Already set up with rbenv / nvm? Move to mise

bin/setup in payaus is idempotent and does the whole install side (Homebrew, Xcode CLT, Brewfile, mise, Ruby, Node, Yarn). The only thing it won't do is rip rbenv and nvm out of your shell. Both of those prepend shims to PATH after .zshrc runs, so if they stay, which ruby / which node keeps resolving to rbenv / nvm even with mise activated. Corepack shims in nvm's node bin dir shadow mise's yarn too. So: unwind first, then run bin/setup.

1. Remove the old version managers from your shell

Open ~/.zshrc and delete any lines like:

export PATH="$HOME/.rbenv/bin:$PATH"

camallen

#!/usr/bin/env bash
# emudhra_mac_check.sh - does the Ruby in this shell still trust the roots behind the
# leaked eMudhra intermediates (https://emudhra.we-have-a-problem.com/)?
#
#   ./emudhra_mac_check.sh         test the Ruby on your PATH
#   ./emudhra_mac_check.sh --fix   also add SSL_CERT_FILE to ~/.zshrc and re-test
#
# Why: mise/rbenv/asdf Rubies on macOS read Apple's /etc/ssl/cert.pem, which still has
# the bad roots. Homebrew's ca-certificates bundle has had them removed. Pointing
# OpenSSL at the brew bundle via SSL_CERT_FILE is the fix until Apple ships an update.

camallen

#!/usr/bin/env ruby
# frozen_string_literal: true

require "bundler"
require "cgi"
require "json"
require "net/http"
require "optparse"
require "thread"
require "uri"

camallen

For years, people have been using jemalloc with ruby. There were various benchmarks and discussions. Legend had it that Jemalloc 5 didn't work as well as Jemalloc 3.

Then, one day, hope appeared on the horizon. @wjordan offered a config for Jemalloc 5.

Ubuntu/Debian

FROM ruby:3.1.2-bullseye
RUN apt-get update ; \

camallen

# config/boot.rb
# frozen_string_literal: true

# Measure boot time
require_relative "../lib/boot_time"
BootTime.instance.store_start_timestamp

ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../Gemfile", __dir__)

require "bundler/setup" # Set up gems listed in the Gemfile.

camallen

#!/usr/bin/env bash

SUM=$(which sha512sum || which sha || which md5sum || which md5 || true)

# modify the following to match the s3 setup you desire
path="s3://bucket_name/path/$1"

tempfile=$(mktemp ~/.tmpXXXXXX)
trap "rm -f $tempfile" INT TERM HUP EXIT

camallen

  You are an expert in Ruby on Rails, Sorbet, PostgreSQL, Hotwire (Turbo and Stimulus) and Tailwind CSS.
  
  Code Style and Structure
  - Write concise, idiomatic Ruby code with accurate examples.
  - Follow Rails conventions and best practices.
  - Use object-oriented and functional programming patterns as appropriate.
  - Prefer iteration and modularization over code duplication.
  - Use descriptive variable and method names (e.g., user_signed_in?, calculate_total).
  - Structure files according to Rails conventions (MVC, concerns, helpers, etc.).
  

camallen

# docker
docker exec -it -u0 containerid bash
# compose
docker compose run --rm -u0 serviceid bash

camallen

[
  { "common_name": "blue tit", "genus": "cyanistes", "species":  "caeruleus", "bto_species_code":  "bluti" },
  { "common_name": "great tit", "genus": "parus", "species":  "major", "bto_species_code":  "greti" },
  { "common_name": "coal tit", "genus": "periparus", "species":  "ater", "bto_species_code":  "coati" },
  { "common_name": "marsh tit", "genus": "poecile", "species":  "palustris", "bto_species_code":  "marti" },
  { "common_name": "nuthatch", "genus": "sitta", "species":  "europaeus", "bto_species_code":  "nutha" },
  { "common_name": "great spotted woodpecker", "genus": "dendrocopos", "species":  "major", "bto_species_code":  "grswo" },
  { "common_name": "goldcrest", "genus": "regulus", "species":  "regulus", "bto_species_code":  "goldc" },
  { "common_name": "goldfinch", "genus": "carduelis", "species":  "carduelis", "bto_species_code":  "goldf" },
  { "common_name": "blackbird", "genus": "turdus", "species":  "merula", "bto_species_code":  "blabi" },

camallen

# Start from a small, trusted base image with the version pinned down
FROM ruby:2.5-slim-stretch AS base

# Install system dependencies required both at runtime and build time
# The image uses Postgres but you can swap it with mariadb-dev (for MySQL) or sqlite-dev
RUN apt-get update && \
    apt-get install --no-install-recommends -y \
      build-essential \
      # git is required for installing gems from git repos
      git \