diff --git a/flake.lock b/flake.lock
index 231c5a2..33cd367 100644
--- a/flake.lock
+++ b/flake.lock
@@ -85,11 +85,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1764110879,
-        "narHash": "sha256-xanUzIb0tf3kJ+PoOFmXEXV1jM3PjkDT/TQ5DYeNYRc=",
+        "lastModified": 1764350888,
+        "narHash": "sha256-6Rp18zavTlnlZzcoLoBTJMBahL2FycVkw2rAEs3cQvo=",
         "owner": "nix-community",
         "repo": "disko",
-        "rev": "aecba248f9a7d68c5d1ed15de2d1c8a4c994a3c5",
+        "rev": "2055a08fd0e2fd41318279a5355eb8a161accf26",
         "type": "github"
       },
       "original": {
@@ -169,11 +169,11 @@
         "rust-overlay": "rust-overlay"
       },
       "locked": {
-        "lastModified": 1764113174,
-        "narHash": "sha256-KxTbumzWWtcxwcoSfjuf4qnDNqNoJVYvNEcAvqJldcw=",
+        "lastModified": 1764536477,
+        "narHash": "sha256-XVcMXXgZs4hxnyIto6oIPlSxfFZMWS6dsQolsagY0kU=",
         "owner": "helix-editor",
         "repo": "helix",
-        "rev": "6d71f11cad4ad855e08524f8454987f084fc31f1",
+        "rev": "940c6be6756637887583772ef847d6e3186995ef",
         "type": "github"
       },
       "original": {
@@ -210,11 +210,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1764075860,
-        "narHash": "sha256-KYEIHCBBw+/lwKsJNRNoUxBB4ZY2LK0G0T8f+0i65q0=",
+        "lastModified": 1764544324,
+        "narHash": "sha256-GVBGjO7UsmzLrlOJV8NlKSxukHaHencrJqWkCA6FkqI=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "295d90e22d557ccc3049dc92460b82f372cd3892",
+        "rev": "e4e25a8c310fa45f2a8339c7972dc43d2845a612",
         "type": "github"
       },
       "original": {
@@ -304,11 +304,11 @@
     },
     "nixos-facter-modules": {
       "locked": {
-        "lastModified": 1762264948,
-        "narHash": "sha256-iaRf6n0KPl9hndnIft3blm1YTAyxSREV1oX0MFZ6Tk4=",
+        "lastModified": 1764252389,
+        "narHash": "sha256-3bbuneTKZBkYXlm0bE36kUjiDsasoIC1GWBw/UEJ9T4=",
         "owner": "numtide",
         "repo": "nixos-facter-modules",
-        "rev": "fa695bff9ec37fd5bbd7ee3181dbeb5f97f53c96",
+        "rev": "5ea68886d95218646d11d3551a476d458df00778",
         "type": "github"
       },
       "original": {
@@ -319,11 +319,11 @@
     },
     "nixos-hardware": {
       "locked": {
-        "lastModified": 1764080039,
-        "narHash": "sha256-b1MtLQsQc4Ji1u08f+C6g5XrmLPkJQ1fhNkCt+0AERQ=",
+        "lastModified": 1764440730,
+        "narHash": "sha256-ZlJTNLUKQRANlLDomuRWLBCH5792x+6XUJ4YdFRjtO4=",
         "owner": "NixOS",
         "repo": "nixos-hardware",
-        "rev": "da17006633ca9cda369be82893ae36824a2ddf1a",
+        "rev": "9154f4569b6cdfd3c595851a6ba51bfaa472d9f3",
         "type": "github"
       },
       "original": {
@@ -411,11 +411,11 @@
     },
     "nixpkgs_4": {
       "locked": {
-        "lastModified": 1763966396,
-        "narHash": "sha256-6eeL1YPcY1MV3DDStIDIdy/zZCDKgHdkCmsrLJFiZf0=",
+        "lastModified": 1764242076,
+        "narHash": "sha256-sKoIWfnijJ0+9e4wRvIgm/HgE27bzwQxcEmo2J/gNpI=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "5ae3b07d8d6527c42f17c876e404993199144b6a",
+        "rev": "2fad6eac6077f03fe109c4d4eb171cf96791faa4",
         "type": "github"
       },
       "original": {
@@ -484,11 +484,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1764015829,
-        "narHash": "sha256-Oi3D37fFYvYRC4cA2voW8kICzmtUCYMoGSuyYuazDZ8=",
+        "lastModified": 1764534155,
+        "narHash": "sha256-HQyLJT0ikblWDR/8pzDJ7WYEZoFzkUrgwZk/f+JULBI=",
         "owner": "0xc000022070",
         "repo": "zen-browser-flake",
-        "rev": "011760d40ec6ac8af6b078d58def3c7d2d994a53",
+        "rev": "fb066e133e614c024a470608ff56585c4f707b44",
         "type": "github"
       },
       "original": {
diff --git a/users/tao/nushell/extras/nix.nu b/users/tao/nushell/extras/nix.nu
index 2a60c72..aed2ea8 100644
--- a/users/tao/nushell/extras/nix.nu
+++ b/users/tao/nushell/extras/nix.nu
@@ -10,7 +10,7 @@ def ns [...packages: string] {
 # }
 
 def rebuild [subcommand, --builders: string] {
-  if (
+  if not (
     df -h | detect columns --guess | where "Mounted on" == "/" or "Mounted on" == "/boot" | get Use% | each {parse "{usage}%" | get usage | into int} | flatten | all {$in < 99}
   ) {
     print "not enough disk space!"