Fixes on Darwin

Do not use local cache for Darwin systems
Update darwin flakes
Simplify some extra syntax

flake.lock

@@ -52,11 +52,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1713543876,
-        "narHash": "sha256-olEWxacm1xZhAtpq+ZkEyQgR4zgfE7ddpNtZNvubi3g=",
+        "lastModified": 1715653378,
+        "narHash": "sha256-6kbg/PI3+SBP17f4T0js3CBsMLVtlD0JqJhDKgzk1mQ=",
         "owner": "lnl7",
         "repo": "nix-darwin",
-        "rev": "9e7c20ffd056e406ddd0276ee9d89f09c5e5f4ed",
+        "rev": "de8b0d60d6fd34f35abffc46adc94ebaa6996ce2",
         "type": "github"
       },
       "original": {
@@ -183,11 +183,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1713818326,
-        "narHash": "sha256-aw3xbVPJauLk/bbrlakIYxKpeuMWzA2feGrkIpIuXd8=",
+        "lastModified": 1715486357,
+        "narHash": "sha256-4pRuzsHZOW5W4CsXI9uhKtiJeQSUoe1d2M9mWU98HC4=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "67de98ae6eed5ad6f91b1142356d71a87ba97f21",
+        "rev": "44677a1c96810a8e8c4ffaeaad10c842402647c1",
         "type": "github"
       },
       "original": {
@@ -393,11 +393,11 @@
     },
     "nixunstable": {
       "locked": {
-        "lastModified": 1713714899,
-        "narHash": "sha256-+z/XjO3QJs5rLE5UOf015gdVauVRQd2vZtsFkaXBq2Y=",
+        "lastModified": 1715534503,
+        "narHash": "sha256-5ZSVkFadZbFP1THataCaSf0JH2cAH3S29hU9rrxTEqk=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "6143fc5eeb9c4f00163267708e26191d1e918932",
+        "rev": "2057814051972fa1453ddfb0d98badbea9b83c06",
         "type": "github"
       },
       "original": {