direnv VS exrc.vim

I also made the export diff configurable, motivated by this post: https://github.com/direnv/direnv/pull/1233

Nice.

For years I've been using [direnv](https://direnv.net/) for this, setting environment variables which git picks up. This looks like a more feature complete equivalent, although to be honest I only really need switching of committer email and the SSH key used.

Direnv, for the uninitiated, loads and unloads environment variables when directories are entered and exited. Under every project folder there is a `$PROJ_DIR/.envrc` which contains:

buffer-env: A pure-Elisp version of the direnv utility. Useful to make Emacs aware of Python virtualenvs (which, judging by the questions posted here, is unfortunately still a complication for a lot of people). Similar to (and inspired by) envrc, but doesn't require the direnv program.

You can look at direnv to see this in action as they wrote shell hooks that get loaded into the shell profile and are executed on every prompt. https://direnv.net/

Yes, most Nix users employ https://direnv.net or the equivalent for your IDE of choice. Emacs for instance has https://github.com/purcell/envrc which set per-buffer variables.

The more applications I write, the more I tend to avoid typical config files in favor of using direnv [0] to set environment variables.

[0] https://direnv.net/

exrc can enable untrusted arbitrary execution. See https://github.com/ii14/exrc.vim that tries to mitigate this.

'exrc' option or https://github.com/ii14/exrc.vim

Yeah, here's my plugin that does that: https://github.com/ii14/exrc.vim

:set exrc and and create .exrc file in your project directory with your project settings, or use a plugin like https://github.com/ii14/exrc.vim or https://github.com/jenterkin/vim-autosource

I did basically the same thing, but without recursive lookup: https://github.com/ii14/exrc.vim

https://github.com/ii14/exrc.vim for local vimrc. Basically a reimplementation of the 'exrc' option that keeps track of file hashes, so you don't evaluate anything malicious, without the limitations of 'secure' option.