Ruby, RVM and Mountain Lion

Key problems

Mountain Lion (10.8) has three main difference compared to Lion (10.7):

XCode 4.4 does not install Command Line Tools by default
X11 isn't available anymore
The installed version of OpenSSL has some bugs

How to work around

briansmith / how-to-generate-and-use-private-keys-with-openssl-tool.md

Last active October 6, 2025 11:37

How to generate & use private keys using the OpenSSL command line tool

How to Generate & Use Private Keys using OpenSSL's Command Line Tool

These commands generate and use private keys in unencrypted binary (not Base64 “PEM”) PKCS#8 format. The PKCS#8 format is used here because it is the most interoperable format when dealing with software that isn't based on OpenSSL.

OpenSSL has a variety of commands that can be used to operate on private key files, some of which are specific to RSA (e.g. openssl rsa and openssl genrsa) or which have other limitations. Here we always use

chrisanthropic / nixos-raspi4.md

Last active August 14, 2024 17:01

NixOS + Raspi4

Download the image builder

git clone [email protected]:Robertof/nixos-docker-sd-image-builder.git
cd nixos-docker-sd-image-builder

Configure for Raspi4

modify /config/rpi4/default.nix to increase size of boot partition
- this step is optional but I ran out of space in /boot pretty quickly with the default setting since I'm still learning and rebuilding a lot. Let's leave some room for trial & error.
- sdImage.firmwareSize = 1024;
modify /config/sd-image.nix
./rpi3 becomes ./rpi4