Automatically use the correct go version for your project with direnv + goenv

.envrc

#!/bin/bash
#
# see: https://direnv.net/
# see: https://github.com/syndbg/goenv
#
# Place this in your go project root as .envrc

GOMOD_VERSION=$(grep 'go 1\.' go.mod | cut -d' ' -f2)

if [[ $GOMOD_VERSION =~ ^1\.[0-9]+$ ]]; then
	GOMOD_VERSION="${GOMOD_VERSION}.0"
fi

if ! goenv versions | grep -q $GOENV_VERSION 2> /dev/null; then
	goenv install $GOENV_VERSION
fi

export GOENV_VERSION=$GOMOD_VERSION