Automatic locking when leaving directories

[strboul]

I first run git-crypt unlock but then I forget to run git-crypt lock back after I'm done and the data stays unencrypted at times. I see it as a security risk.

I was thinking to create a .envrc hook with direnv that calls the unlock command when exiting the directory. I'm not sure how to best implement this though.

Is there another (better) way to auto lock?