[direnv] Create module

nixos/hosts/Tibo-NixDesk/default.nix

@@ -19,6 +19,7 @@
     };
 
     programs = {
+      direnv.enable = true;
       home-manager.enable = true;
       sops.enable = true;
       ssh.enable = true;
@@ -69,14 +70,6 @@
 
   time.timeZone = "Europe/Brussels";
 
-  nix = {
-    # Keep derivations so shells don't break (direnv)
-    extraOptions = ''
-      keep-outputs = true
-      keep-derivations = true
-    '';
-  };
-
   i18n.defaultLocale = "en_GB.UTF-8";
   console = {
     # font = "Lat2-Terminus16";

nixos/hosts/Tibo-NixFat/default.nix

@@ -19,6 +19,7 @@
     };
 
     programs = {
+      direnv.enable = true;
       home-manager.enable = true;
       sops.enable = true;
       ssh.enable = true;
@@ -101,14 +102,6 @@
     networkmanager.enable = true;
   };
 
-  nix = {
-    # Keep derivations so shells don't break (direnv)
-    extraOptions = ''
-      keep-outputs = true
-      keep-derivations = true
-    '';
-  };
-
   i18n.defaultLocale = "en_GB.UTF-8";
   console = {
     # font = "Lat2-Terminus16";

nixos/modules-old/default.nix

@@ -1,29 +0,0 @@
-{ inputs, lib, config, pkgs, ... }:
-
-{
-  nix = {
-    # Allow Nix Flakes
-    # Keep derivations so shells don't break (direnv)
-    # If the disk has less than 100MiB, free up to 2GiB by garbage-collecting.
-    extraOptions = ''
-      experimental-features = nix-command flakes
-      keep-outputs = true
-      keep-derivations = true
-      min-free = ${toString (100 * 1024 * 1024)}
-      max-free = ${toString (2048 * 1024 * 1024)}
-    '';
-    # Scheduled garbage-collect
-    gc = {
-      automatic = true;
-      dates = "weekly";
-      options = "--delete-older-than 30d";
-    };
-    package = pkgs.nixFlakes;
-  };
-
-  i18n.defaultLocale = "en_GB.UTF-8";
-  console = {
-    # font = "Lat2-Terminus16";
-    useXkbConfig = true; # use xkbOptions in tty.
-  };
-}

nixos/modules/programs/default.nix

@@ -1,8 +1,9 @@
 {
   imports = [
+    ./direnv
     ./home-manager
     ./sops
-    ./ssh
     ./spotify-adblock
+    ./ssh
   ];
 }

nixos/modules/programs/direnv/default.nix

@@ -0,0 +1,22 @@
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = sisyphus.programs.direnv;
+in {
+  options.sisyphus.programs.direnv.enable = lib.mkEnableOption "direnv";
+
+  config = lib.mkIf cfg.enable {
+    programs.direnv = {
+      enable = true;
+      nix-direnv.enable = true;  # Use nix-specific direnv.
+      persistDerivations = true; # Sets the extraOptions listed below.
+    };
+
+    # This is also done by setting programs.direnv.persistDerivations.
+    # Keep derivations so shells don't break.
+    nix.extraOption = ''
+      keep-outputs = true
+      keep-derivations = true
+    '';
+  };
+};