fnichol

A Common .ruby-version File For Ruby Projects

Background

I've been using this technique in most of my Ruby projects lately where Ruby versions are required:

• Create .rbenv-version containing the target Ruby using a definition name defined in ruby-build (example below). These strings are a proper subset of RVM Ruby string names so far...
• Create .rvmrc (with rvm --create --rvmrc "1.9.3@myapp") and edit the environment_id= line to fetch the Ruby version from .rbenv-version (example below).

Today I learned about another Ruby manager, rbfu, where the author is using a similar technique with .rbfu-version.

fnichol

Why?

There is a long standing issue in Ruby where the net/http library by default does not check the validity of an SSL certificate during a TLS handshake. Rather than deal with the underlying problem (a missing certificate authority, a self-signed certificate, etc.) one tends to see bad hacks everywhere. This can lead to problems down the road.

From what I can see the OpenSSL library that Rails Installer delivers has no certificate authorities defined. So, let's go fetch some from the curl website. And since this is for ruby, why don't we download and install the file with a ruby script?

Installation

The Ruby Way! (Fun)

fnichol

#!/usr/bin/env bash

set -e

if [ -z "$iso" ] ; then
  printf -- ">>> You must invoke with iso=/path/to/winxp.iso $(basename $0)\n"
  exit 1
fi

if [ -z "$url" ] ; then

fnichol

#!/usr/bin/env bash

# ## Installing Apache Maven
#
#     bash < <(curl -L http://gist.github.com/raw/703892/maven_install.sh)
#

mavens=( 2.2.1 3.0.1 )
current="3.0.1"

fnichol

Auto-enable Local HTTP Caching in Test Kitchen

Note: total experiment and hack, looks nasty, could be awesome:

Setup

• Drop the kitchen.local.yml into $HOME/.kitchen/config.yml
• Install polipo (with Mac: brew install polipo, with Ubuntu: apt-get install polipo)
• Drop polipo-start and polipo-console somewhere useful (perhaps $HOME/bin?)

fnichol

Testing Mac Platforms with Test Kitchen

We'll assume an OS X Mavericks (10.9) box here.

Requirements

You'll need:

• Vagrant
• Vagrant's VMware Fusion provider

fnichol

#!/usr/bin/env bash
set -e

# # Mac OS X 10.7/10.8/10.9/10.10 Bootstrapping
#
# ## Pre-requisites
#
# 1.  Set your hostname: In **System Preferences** go to **Sharing** and enter
#     the name in **Computer Name**
# 2.  Run **Software Update** and reboot if necessary

fnichol

#!/usr/bin/env bash

# **postinstall.sh** is a script executed after Debian/Ubuntu has been
# installed and restarted. There is no user interaction so all commands must
# be able to run in a non-interactive mode.
#
# If any package install time questions need to be set, you can use
# `preeseed.cfg` to populate the settings.
#
# To run:

fnichol

# Thanks to: https://gist.github.com/justinian/81a2e55c89e8301a8a96

$tempFile = [IO.Path]::GetTempFileName()

## Store the output of cmd.exe.  We also ask cmd.exe to output
## the environment table after the batch file completes

cmd /c " `"C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Auxiliary\Build\vcvars64.bat`" && set > `"$tempFile`" "

## Go through the environment variables in the temp file.

fnichol

A Windows/Linux/macOS PowerShell Rustup Install Script

On Windows, run

& ([scriptblock]::Create((New-Object System.Net.WebClient).DownloadString('https://gist.github.com/fnichol/699d3c2930649a9932f71bab8a315b31/raw/rustup-init.ps1')))

in a PowerShell session. This downloads and runs rustup-init.ps1, which in turn downloads and runs the correct version of the rustup-init executable on