Merge pull request 'Add DIRENV_CACHE env variable' (#22) from feature/direnv-cache-dir into master

Reviewed-on: #22

programs/direnv.nix

@@ -1,4 +1,4 @@
-{ pkgs, ... }:
+{ pkgs, config, ... }:
 
 {
   programs.direnv = {
@@ -6,4 +6,8 @@
     enableZshIntegration = true;
     nix-direnv.enable = true;
   };
+
+  home.sessionVariables = {
+    DIRENV_CACHE = "${config.home.homeDirectory}/.cache/direnv";
+  };
 }