home: direnv: update to new option name

And enable the flakes option.

I don't actually use this on my own projects, but it could be useful for
other projects that I contribute to.

flake.lock

@@ -2,11 +2,11 @@
   "nodes": {
     "futils": {
       "locked": {
-        "lastModified": 1620759905,
-        "narHash": "sha256-WiyWawrgmyN0EdmiHyG2V+fqReiVi8bM9cRdMaKQOFg=",
+        "lastModified": 1623875721,
+        "narHash": "sha256-A8BU7bjS5GirpAUv4QA+QnJ4CceLHkcXdRp4xITDB0s=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "b543720b25df6ffdfcf9227afafc5b8c1fabfae8",
+        "rev": "f7e004a55b120c02ecb6219596820fcd32ca8772",
         "type": "github"
       },
       "original": {
@@ -23,11 +23,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1622145920,
-        "narHash": "sha256-/tt6IApLuVcGP5auy4zjLzfm5+MBHYLS3Nauvv2U2EQ=",
+        "lastModified": 1625016439,
+        "narHash": "sha256-zHf7iCU9nYd6/7xwYx5gwDzXdXcJ9RUagdy0IgX39sQ=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "0e6c61a44092e98ba1d75b41f4f947843dc7814d",
+        "rev": "9ad0024d4d292c628d4c9a50c2347f23418d7000",
         "type": "github"
       },
       "original": {
@@ -39,11 +39,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1622194753,
-        "narHash": "sha256-76qtvFp/vFEz46lz5iZMJ0mnsWQYmuGYlb0fHgKqqMg=",
+        "lastModified": 1624922035,
+        "narHash": "sha256-OiIxJQuMRkICxaUwY3xMBbrPPu20de/n7tVYnWzLvS4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "540dccb2aeaffa9dc69bfdc41c55abd7ccc6baa3",
+        "rev": "3a8d7958a610cd3fec3a6f424480f91a1b259185",
         "type": "github"
       },
       "original": {
@@ -55,11 +55,11 @@
     },
     "nur": {
       "locked": {
-        "lastModified": 1622221304,
-        "narHash": "sha256-aU/BdVGUverHNY9BOmDaAo21G8k9ndhzzjX1RSY1im0=",
+        "lastModified": 1625064961,
+        "narHash": "sha256-ErII8vNW+04+eIGtViN8sSZs573I8PQiw6TWd1E0zoo=",
         "owner": "nix-community",
         "repo": "NUR",
-        "rev": "8d8c59d767d854a1bc6fd08952529e10438eaa8d",
+        "rev": "5f0603506c26d7c97c91e8c6ae27e07f3ab2f0e8",
         "type": "github"
       },
       "original": {
@@ -79,11 +79,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1621411868,
-        "narHash": "sha256-R+7OQ2JYFCb3E7Jl7LhRifzMVCR6Gl8R98zYsNhZtJ8=",
+        "lastModified": 1624971177,
+        "narHash": "sha256-Amf/nBj1E77RmbSSmV+hg6YOpR+rddCbbVgo5C7BS0I=",
         "owner": "cachix",
         "repo": "pre-commit-hooks.nix",
-        "rev": "2e7fac06108b4fc81f5ff9ed9a02bc4f6ede7001",
+        "rev": "397f0713d007250a2c7a745e555fa16c5dc8cadb",
         "type": "github"
       },
       "original": {

home/direnv.nix

@@ -9,7 +9,11 @@ in
 
   config.programs.direnv = lib.mkIf cfg.enable {
     enable = true;
-    # A better `use_nix`
-    enableNixDirenvIntegration = true;
+    nix-direnv = {
+      # A better `use_nix`
+      enable = true;
+      # And `use_flake`
+      enableFlakes = true;
+    };
   };
 }

home/mail/accounts.nix

@@ -15,6 +15,10 @@ let
 
     inherit primary;
 
+    himalaya = {
+      enable = cfg.himalaya.enable;
+    };
+
     msmtp = {
       enable = cfg.msmtp.enable;
     };

home/mail/default.nix

@@ -7,12 +7,17 @@ in
 {
   imports = [
     ./accounts.nix
+    ./himalaya.nix
     ./msmtp.nix
   ];
 
   options.my.home.mail = with lib; {
     enable = my.mkDisableOption "email configuration";
 
+    himalaya = {
+      enable = mkRelatedOption "himalaya configuration";
+    };
+
     msmtp = {
       enable = mkRelatedOption "msmtp configuration";
     };

home/mail/himalaya.nix

@@ -0,0 +1,23 @@
+{ config, lib, pkgs, ... }:
+let
+  cfg = config.my.home.mail.himalaya;
+in
+{
+  config.programs.himalaya = lib.mkIf cfg.enable {
+    enable = true;
+
+    settings = {
+      notify-cmd =
+        let
+          notify-send = "${pkgs.libnotify}/bin/notify-send";
+        in
+        pkgs.writeScript "mail-notifier" ''
+          SENDER="$1"
+          SUBJECT="$2"
+          ${notify-send} \
+            -c himalaya \
+            -- "$(printf 'Received email from %s\n\n%s' "$SENDER" "$SUBJECT")"
+        '';
+    };
+  };
+}