diff --git a/flake.lock b/flake.lock
index b1fc420..714b2a5 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,78 +1,5 @@
 {
   "nodes": {
-    "conduit": {
-      "inputs": {
-        "crane": "crane",
-        "fenix": "fenix",
-        "flake-utils": "flake-utils",
-        "nixpkgs": [
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1691686916,
-        "narHash": "sha256-TpNssMHvSKcxJMas5lQNWEbIv09u4/niBN2C27Mp0JY=",
-        "owner": "famedly",
-        "repo": "conduit",
-        "rev": "0c2cfda3ae923d9e922d5edf379e4d8976a52d4e",
-        "type": "gitlab"
-      },
-      "original": {
-        "owner": "famedly",
-        "ref": "v0.6.0",
-        "repo": "conduit",
-        "type": "gitlab"
-      }
-    },
-    "crane": {
-      "inputs": {
-        "flake-compat": "flake-compat",
-        "flake-utils": [
-          "conduit",
-          "flake-utils"
-        ],
-        "nixpkgs": [
-          "conduit",
-          "nixpkgs"
-        ],
-        "rust-overlay": "rust-overlay"
-      },
-      "locked": {
-        "lastModified": 1688772518,
-        "narHash": "sha256-ol7gZxwvgLnxNSZwFTDJJ49xVY5teaSvF7lzlo3YQfM=",
-        "owner": "ipetkov",
-        "repo": "crane",
-        "rev": "8b08e96c9af8c6e3a2b69af5a7fa168750fcf88e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "ipetkov",
-        "repo": "crane",
-        "type": "github"
-      }
-    },
-    "fenix": {
-      "inputs": {
-        "nixpkgs": [
-          "conduit",
-          "nixpkgs"
-        ],
-        "rust-analyzer-src": "rust-analyzer-src"
-      },
-      "locked": {
-        "lastModified": 1689488573,
-        "narHash": "sha256-diVASflKCCryTYv0djvMnP2444mFsIG0ge5pa7ahauQ=",
-        "owner": "nix-community",
-        "repo": "fenix",
-        "rev": "39096fe3f379036ff4a5fa198950b8e79defe939",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "fenix",
-        "type": "github"
-      }
-    },
     "flake-compat": {
       "flake": false,
       "locked": {
@@ -89,83 +16,16 @@
         "type": "github"
       }
     },
-    "flake-compat_2": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1673956053,
-        "narHash": "sha256-4gtG9iQuiKITOjNQQeQIpoIB6b16fm+504Ch3sNKLd8=",
-        "owner": "edolstra",
-        "repo": "flake-compat",
-        "rev": "35bb57c0c8d8b62bbfd284272c928ceb64ddbde9",
-        "type": "github"
-      },
-      "original": {
-        "owner": "edolstra",
-        "repo": "flake-compat",
-        "type": "github"
-      }
-    },
     "flake-utils": {
       "inputs": {
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1694529238,
-        "narHash": "sha256-zsNZZGTGnMOf9YpHKJqMSsa0dXbfmxeoJ7xHlrt+xmY=",
+        "lastModified": 1701680307,
+        "narHash": "sha256-kAuep2h5ajznlPMD9rnQyffWG8EM/C73lejGofXvdM8=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "ff7b65b44d01cf9ba6a71320833626af21126384",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
-    "flake-utils_2": {
-      "inputs": {
-        "systems": "systems_2"
-      },
-      "locked": {
-        "lastModified": 1694529238,
-        "narHash": "sha256-zsNZZGTGnMOf9YpHKJqMSsa0dXbfmxeoJ7xHlrt+xmY=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "ff7b65b44d01cf9ba6a71320833626af21126384",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
-    "flake-utils_3": {
-      "inputs": {
-        "systems": "systems_3"
-      },
-      "locked": {
-        "lastModified": 1681202837,
-        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
-    "flake-utils_4": {
-      "locked": {
-        "lastModified": 1638122382,
-        "narHash": "sha256-sQzZzAbvKEqN9s0bzWuYmRaA03v40gaJ4+iL1LXjaeI=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "74f7e4319258e287b0f9cb95426c9853b282730b",
+        "rev": "4022d587cbbfd70fe950c1e2083a02621806a725",
         "type": "github"
       },
       "original": {
@@ -181,11 +41,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1701071203,
-        "narHash": "sha256-lQywA7QU/vzTdZ1apI0PfgCWNyQobXUYghVrR5zuIeM=",
+        "lastModified": 1701728041,
+        "narHash": "sha256-x0pyrI1vC8evVDxCxyO6olOyr4wlFg9+VS3C3p4xFYQ=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "db1878f013b52ba5e4034db7c1b63e8d04173a86",
+        "rev": "ac7216918cd65f3824ba7817dea8f22e61221eaf",
         "type": "github"
       },
       "original": {
@@ -194,20 +54,42 @@
         "type": "github"
       }
     },
-    "nix-vscode-extensions": {
+    "nix-index-database": {
       "inputs": {
-        "flake-compat": "flake-compat",
-        "flake-utils": "flake-utils_2",
         "nixpkgs": [
           "nixpkgs"
         ]
       },
       "locked": {
-        "lastModified": 1701048169,
-        "narHash": "sha256-gsYFAIDMyXztMl39/EQzIVjQx/7z+0XPuCDhkrF2tbw=",
+        "lastModified": 1702177733,
+        "narHash": "sha256-lr3hkmmuqDFPj3i41cHpaALF3Txo3kxsJ3L6jZLujJ8=",
+        "owner": "Mic92",
+        "repo": "nix-index-database",
+        "rev": "58ecd98e27e27fcbb27a51a588555c828b1ec56e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Mic92",
+        "repo": "nix-index-database",
+        "type": "github"
+      }
+    },
+    "nix-vscode-extensions": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "flake-utils": [
+          "flake-utils"
+        ],
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1701825722,
+        "narHash": "sha256-vpT4hY8DDu39b9AMKCJIEVgQSfm+QKDGUjpVPFxNhTs=",
         "owner": "nix-community",
         "repo": "nix-vscode-extensions",
-        "rev": "23dfda3e3df1901d38f1efc98d3e90cefd73ff5d",
+        "rev": "8f5a362c9ea3824d70458485abf9d162b8765034",
         "type": "github"
       },
       "original": {
@@ -218,7 +100,9 @@
     },
     "nixos-cn": {
       "inputs": {
-        "flake-utils": "flake-utils_4",
+        "flake-utils": [
+          "flake-utils"
+        ],
         "nixpkgs": [
           "nixpkgs"
         ]
@@ -239,11 +123,11 @@
     },
     "nixos-hardware": {
       "locked": {
-        "lastModified": 1701020860,
-        "narHash": "sha256-NwnRn04C8s+hH+KdVtGmVB1FFNIG7DtPJmQSCBDaET4=",
+        "lastModified": 1701656485,
+        "narHash": "sha256-xDFormrGCKKGqngHa2Bz1GTeKlFMMjLnHhTDRdMJ1hs=",
         "owner": "NixOS",
         "repo": "nixos-hardware",
-        "rev": "b006ec52fce23b1d57f6ab4a42d7400732e9a0a2",
+        "rev": "fa194fc484fd7270ab324bb985593f71102e84d1",
         "type": "github"
       },
       "original": {
@@ -255,11 +139,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1700794826,
-        "narHash": "sha256-RyJTnTNKhO0yqRpDISk03I/4A67/dp96YRxc86YOPgU=",
+        "lastModified": 1701718080,
+        "narHash": "sha256-6ovz0pG76dE0P170pmmZex1wWcQoeiomUZGggfH9XPs=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "5a09cb4b393d58f9ed0d9ca1555016a8543c2ac8",
+        "rev": "2c7f3c0fb7c08a0814627611d9d7d45ab6d75335",
         "type": "github"
       },
       "original": {
@@ -271,11 +155,11 @@
     },
     "nixpkgs-stable": {
       "locked": {
-        "lastModified": 1701053011,
-        "narHash": "sha256-8QQ7rFbKFqgKgLoaXVJRh7Ik5LtI3pyBBCfOnNOGkF0=",
+        "lastModified": 1701615100,
+        "narHash": "sha256-7VI84NGBvlCTduw2aHLVB62NvCiZUlALLqBe5v684Aw=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "5b528f99f73c4fad127118a8c1126b5e003b01a9",
+        "rev": "e9f06adb793d1cca5384907b3b8a4071d5d7cb19",
         "type": "github"
       },
       "original": {
@@ -287,11 +171,11 @@
     },
     "nixpkgs-stable_2": {
       "locked": {
-        "lastModified": 1700905716,
-        "narHash": "sha256-w1vHn2MbGfdC+CrP3xLZ3scsI06N0iQLU7eTHIVEFGw=",
+        "lastModified": 1701568804,
+        "narHash": "sha256-iwr1fjOCvlirVL/xNvOTwY9kg3L/F3TC/7yh/QszaPI=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "dfb95385d21475da10b63da74ae96d89ab352431",
+        "rev": "dc01248a9c946953ad4d438b0a626f5c987a93e4",
         "type": "github"
       },
       "original": {
@@ -301,29 +185,13 @@
         "type": "github"
       }
     },
-    "nixpkgs_2": {
-      "locked": {
-        "lastModified": 1700856099,
-        "narHash": "sha256-RnEA7iJ36Ay9jI0WwP+/y4zjEhmeN6Cjs9VOFBH7eVQ=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "0bd59c54ef06bc34eca01e37d689f5e46b3fe2f1",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
     "nur": {
       "locked": {
-        "lastModified": 1701176534,
-        "narHash": "sha256-AFYe8bkcwYZOBjkbEXzo82jy6hOrduCkoHV9eCPa4NA=",
+        "lastModified": 1701906331,
+        "narHash": "sha256-4dzaExoiung1HWn0nTp9xBHtB5rQMTsfOC2FtJuUoH4=",
         "owner": "nix-community",
         "repo": "NUR",
-        "rev": "1cd0a267b09c8c035e5c32bf9e1017b5ae90bec4",
+        "rev": "b8ad2b1feccf3b75e2d7fabad6d97769318febf4",
         "type": "github"
       },
       "original": {
@@ -334,9 +202,9 @@
     },
     "root": {
       "inputs": {
-        "conduit": "conduit",
-        "flake-utils": "flake-utils_2",
+        "flake-utils": "flake-utils",
         "home-manager": "home-manager",
+        "nix-index-database": "nix-index-database",
         "nix-vscode-extensions": "nix-vscode-extensions",
         "nixos-cn": "nixos-cn",
         "nixos-hardware": "nixos-hardware",
@@ -346,61 +214,19 @@
         "sops-nix": "sops-nix"
       }
     },
-    "rust-analyzer-src": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1689441253,
-        "narHash": "sha256-4MSDZaFI4DOfsLIZYPMBl0snzWhX1/OqR/QHir382CY=",
-        "owner": "rust-lang",
-        "repo": "rust-analyzer",
-        "rev": "996e054f1eb1dbfc8455ecabff0f6ff22ba7f7c8",
-        "type": "github"
-      },
-      "original": {
-        "owner": "rust-lang",
-        "ref": "nightly",
-        "repo": "rust-analyzer",
-        "type": "github"
-      }
-    },
-    "rust-overlay": {
-      "inputs": {
-        "flake-utils": [
-          "conduit",
-          "crane",
-          "flake-utils"
-        ],
-        "nixpkgs": [
-          "conduit",
-          "crane",
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1688351637,
-        "narHash": "sha256-CLTufJ29VxNOIZ8UTg0lepsn3X03AmopmaLTTeHDCL4=",
-        "owner": "oxalica",
-        "repo": "rust-overlay",
-        "rev": "f9b92316727af9e6c7fee4a761242f7f46880329",
-        "type": "github"
-      },
-      "original": {
-        "owner": "oxalica",
-        "repo": "rust-overlay",
-        "type": "github"
-      }
-    },
     "sops-nix": {
       "inputs": {
-        "nixpkgs": "nixpkgs_2",
+        "nixpkgs": [
+          "nixpkgs"
+        ],
         "nixpkgs-stable": "nixpkgs-stable_2"
       },
       "locked": {
-        "lastModified": 1701127353,
-        "narHash": "sha256-qVNX0wOl0b7+I35aRu78xUphOyELh+mtUp1KBx89K1Q=",
+        "lastModified": 1701728052,
+        "narHash": "sha256-7lOMc3PtW5a55vFReBJLLLOnopsoi1W7MkjJ93jPV4E=",
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "b1edbf5c0464b4cced90a3ba6f999e671f0af631",
+        "rev": "e91ece6d2cf5a0ae729796b8f0dedceab5107c3d",
         "type": "github"
       },
       "original": {
@@ -423,36 +249,6 @@
         "repo": "default",
         "type": "github"
       }
-    },
-    "systems_2": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
-    },
-    "systems_3": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index c8c02e2..0ed4249 100644
--- a/flake.nix
+++ b/flake.nix
@@ -12,11 +12,13 @@
     nix-vscode-extensions =  {
       url = "github:nix-community/nix-vscode-extensions";
       inputs.nixpkgs.follows = "nixpkgs";
+      inputs.flake-utils.follows = "flake-utils";
     };
 
     nixos-cn = {
       url = "github:nixos-cn/flakes";
       inputs.nixpkgs.follows = "nixpkgs";
+      inputs.flake-utils.follows = "flake-utils";
     };
   
     nur = {
@@ -36,8 +38,10 @@
       url = "github:numtide/flake-utils";
     };
 
-    conduit.url = "gitlab:famedly/conduit/v0.6.0";
-    conduit.inputs.nixpkgs.follows = "nixpkgs";
+    nix-index-database = {
+      url = "github:Mic92/nix-index-database";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
 
diff --git a/home/xin/calcite/default.nix b/home/xin/calcite/default.nix
index 1a13e94..94e3d77 100644
--- a/home/xin/calcite/default.nix
+++ b/home/xin/calcite/default.nix
@@ -1,11 +1,14 @@
-{ config, pkgs, ... }:
+{ inputs, config, pkgs, ... }:
 {
   imports = [
     ../common
     ../vscode.nix
     ../alacritty.nix
+    inputs.nix-index-database.hmModules.nix-index
   ];
 
+  programs.nix-index-database.comma.enable = true;
+
   home.username = "xin";
   home.homeDirectory = "/home/xin";
   home.stateVersion = "23.05";
diff --git a/machines/calcite/configuration.nix b/machines/calcite/configuration.nix
index c04f6ab..d6b36dd 100644
--- a/machines/calcite/configuration.nix
+++ b/machines/calcite/configuration.nix
@@ -119,6 +119,7 @@
   # $ nix search wget
   environment.systemPackages = with pkgs; [
     # Filesystem
+    owncloud-client
     nfs-utils
 
     winetricks
@@ -177,6 +178,7 @@
     gnomeExtensions.paperwm
     gnomeExtensions.search-light
     gnomeExtensions.tray-icons-reloaded
+    gnomeExtensions.gsconnect
     gnome.gnome-tweaks
     gthumb
 
@@ -227,6 +229,8 @@
     dates = "weekly";
     options = "--delete-older-than 30d";
   };
+  nix.optimise.automatic = true;
+
   nix.settings = {
     experimental-features = [ "nix-command" "flakes" ];
     auto-optimise-store = true;