Not today...

I recently discovered the direnv project. Which helped me a lot for setting up my development environments. I will share a bit of things I use in my daily basis.

Python projects

This is well documented but here is what I use in python projects to set up a default virtualenv.

layout python

That’s it! It sets up a virtualenv in your .direnv directory, and load the updated PATH.

Golang projects

This one is a bit trickier.

export GOPATH="$(pwd)/.go"
export GOBIN="$GOPATH/bin"
PATH_add "$GOBIN"

I usually put my $GOPATH in an hidden directory, here it’s .go and link the project to the top directory. But you can also set up the vendor directory, depending on your needs.

Misc

This is a trick I use with a bunch of project to move quickly around. I set up this in .envrc file:

export PROJECT="$(pwd)"

And then in the .zshrc (works also with .bashrc), I put this:

alias cd='HOME=${PROJECT:-$HOME} cd'

This will make my cd command to go back to the root of my project (where the .envrc file lands) instead of going to $HOME. But only inside my project and without overriding my $HOME variable globally. Which is something you really don’t want, seriously don’t do it!