Compiling Ruby 2.7.7 fails with the following error about openssl:

By now you should be using Python 3.x. You can integrate it with direnv (2.21 or newer) by putting the following in your .envrc

I’m reading “Practical Haskell”, which requires a different version of Haskell than Ubuntu installs so I figured I’d add another entry to my direnv series.

To integrate direnv with ruby-install – installation instructions here – add the following to ~/.direnvrc:

To integrate direnv with python-build – installation instructions here – add the following to ~/.direnvrc:

Install pyenv. We’re not going to use it as-is, but it includes the python-build script that we will use:

To integrate direnv with nvm, add the following to ~/.direnvrc:

At Electric Imp, we manage our Elixir versions with kiex.

To integrate direnv with kiex, add the following to ~/.direnvrc:

At Electric Imp, on developer PCs, we manage our Erlang versions with kerl.

To integrate direnv with kerl, add the following to ~/.direnvrc:

If you want to use kerl to build your Erlang installation, you’re going to need some packages installed first.

From direnv.net:

At Electric Imp, we use a variety of different languages, and each project might be using a different mix of versions.

kerl allows you to easily build and install multiple Erlang/OTP releases. It’s kinda like nvm or rvm, but for Erlang. It doesn’t do everything, and that’s what direnv is for. direnv allows you to run commands upon entering or leaving a particular directory.