⚠️ Use https://github.com/nix-community/nix-direnv instead! This repo is old, unmaintained, doesn't support flakes, etc.

auto-nix-shell

auto-nix-shell enters or exits nix-shell automatically when you cd into or out of a directory that contains a default.nix file. It reloads nix-shell for the next command if default.nix was changed, so git pull works seamlessly. It does not handle the case where a script modifies default.nix then runs commands dependent on the new version.

Install for fish shell

With fisherman

fisher chrismwendt/auto-nix-shell

Then add this to your ~/.config/fish/config.fish:

if test -e ~/.config/fish/functions/auto-nix-shell.fish
    . ~/.config/fish/functions/auto-nix-shell.fish
end

Install for bash shell

• Clone this repo
• Download bash-preexec
• Add this to your ~/.bashrc:

if [ -e ~/auto-nix-shell/auto-nix-shell.sh ]; then
  . ~/auto-nix-shell/auto-nix-shell.sh
fi

Usage

cd into a directory that contains default.nix and auto-nix-shell will enter a nix-shell for you.