Use direnv for project-specific environment variables

.bashrc

@@ -115,3 +115,6 @@ if ! shopt -oq posix; then
     . /etc/bash_completion
   fi
 fi
+
+# Hook up direnv
+eval "$(direnv hook bash)"

.config/emacs/init.el

@@ -163,3 +163,7 @@
   :custom
   (ein:jupyter-default-notebook-directory "~/Projects/notebooks")
   (ein:output-area-inlined-images t))
+
+(use-package direnv
+  :config
+  (direnv-mode))

.config/setup/01-install-packages.sh

@@ -2,6 +2,7 @@
 
 DEB_PKGS="\
 audacity \
+direnv \
 docker.io \
 emacs-mozc \
 exa \