home: install direnv

.envrc

@@ -0,0 +1 @@
+use nix

.gitignore

@@ -1,2 +1,4 @@
+.direnv/
+
 /wallpapers/*.jpg
 

home/home.nix

@@ -93,6 +93,11 @@ in
     zoxide.enable = true;
   };
 
+  programs.direnv = {
+    enable = true;
+    nix-direnv.enable = true;
+  };
+
   accounts = {
     email = {
       accounts = secrets.emailAccounts;

system/configuration.nix

@@ -120,6 +120,13 @@ in
       options = "--delete-older-than 7d";
     };
 
+    # To protect nix-shell against garbage collection
+    # Source: https://github.com/nix-community/nix-direnv#installation
+    extraOptions = ''
+      keep-outputs = true
+      keep-derivations = true
+    '';
+
     settings = {
       auto-optimise-store = true;
 

system/machine/home/default.nix

@@ -35,7 +35,7 @@ in
 
   services.xserver = {
     # All monitors in the right order
-    # See: https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/services/x11/xserver.nix#L83
+    # Source: https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/services/x11/xserver.nix#L83
     xrandrHeads = [
       {
         output = "HDMI-A-0";