diff --git a/flake.lock b/flake.lock
index 4b7457b..720dd09 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,12 +1,15 @@
 {
   "nodes": {
     "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
       "locked": {
-        "lastModified": 1638122382,
-        "narHash": "sha256-sQzZzAbvKEqN9s0bzWuYmRaA03v40gaJ4+iL1LXjaeI=",
+        "lastModified": 1705309234,
+        "narHash": "sha256-uNRRNRKmJyCRC/8y1RqBkqWBLM034y4qN7EprSdmgyA=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "74f7e4319258e287b0f9cb95426c9853b282730b",
+        "rev": "1ef2e671c3b0c19053962c07dbda38332dcebf26",
         "type": "github"
       },
       "original": {
@@ -15,46 +18,13 @@
         "type": "github"
       }
     },
-    "lscolors": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1583438517,
-        "narHash": "sha256-xFnP0VPVQIszR2tYFjcR1q2OmG70mFX91o5RQyCGRhQ=",
-        "owner": "joachimschmidt557",
-        "repo": "nim-lscolors",
-        "rev": "668b46c835944254a445b9cc6dfb887e38fa13f1",
-        "type": "github"
-      },
-      "original": {
-        "owner": "joachimschmidt557",
-        "ref": "v0.3.3",
-        "repo": "nim-lscolors",
-        "type": "github"
-      }
-    },
-    "nimbox": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1560456726,
-        "narHash": "sha256-oRPLd/mLsHfHj+mLazuodKBNrZMFHGSyxawH1V3ToZc=",
-        "owner": "dom96",
-        "repo": "nimbox",
-        "rev": "6a56e76c01481176f16ae29b7d7c526bd83f229b",
-        "type": "github"
-      },
-      "original": {
-        "owner": "dom96",
-        "repo": "nimbox",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1641528457,
-        "narHash": "sha256-FyU9E63n1W7Ql4pMnhW2/rO9OftWZ37pLppn/c1aisY=",
+        "lastModified": 1708296515,
+        "narHash": "sha256-FyF489fYNAUy7b6dkYV6rGPyzp+4tThhr80KNAaF/yY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "ff377a78794d412a35245e05428c8f95fef3951f",
+        "rev": "b98a4e1746acceb92c509bc496ef3d0e5ad8d4aa",
         "type": "github"
       },
       "original": {
@@ -67,26 +37,21 @@
     "root": {
       "inputs": {
         "flake-utils": "flake-utils",
-        "lscolors": "lscolors",
-        "nimbox": "nimbox",
-        "nixpkgs": "nixpkgs",
-        "wcwidth": "wcwidth"
+        "nixpkgs": "nixpkgs"
       }
     },
-    "wcwidth": {
-      "flake": false,
+    "systems": {
       "locked": {
-        "lastModified": 1665667912,
-        "narHash": "sha256-VuLaocfWV4/96+xiNr1US6f8UFySfidrqq8zuTD1aRk=",
-        "owner": "shoyu777",
-        "repo": "wcwidth-nim",
-        "rev": "86f8db1a883f6a64e590a56aed81e788389b7196",
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
         "type": "github"
       },
       "original": {
-        "owner": "shoyu777",
-        "ref": "v0.1.3",
-        "repo": "wcwidth-nim",
+        "owner": "nix-systems",
+        "repo": "default",
         "type": "github"
       }
     }
diff --git a/flake.nix b/flake.nix
index 37376a5..e36f14d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -4,22 +4,7 @@
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
   inputs.flake-utils.url = "github:numtide/flake-utils";
 
-  inputs.nimbox = {
-    url = "github:dom96/nimbox";
-    flake = false;
-  };
-
-  inputs.lscolors = {
-    url = "github:joachimschmidt557/nim-lscolors/v0.3.3";
-    flake = false;
-  };
-
-  inputs.wcwidth = {
-    url = "github:shoyu777/wcwidth-nim/v0.1.3";
-    flake = false;
-  };
-
-  outputs = { self, nixpkgs, flake-utils, nimbox, lscolors, wcwidth }:
+  outputs = { self, nixpkgs, flake-utils }:
     (flake-utils.lib.eachDefaultSystem
       (system:
 
@@ -27,30 +12,18 @@
         rec {
 
           packages.nimmm =
-            pkgs.stdenv.mkDerivation {
+            pkgs.buildNimPackage {
               pname = "nimmm";
               version = "master";
 
               src = self;
 
-              nativeBuildInputs = with pkgs; [ nim ];
-              buildInputs = with pkgs; [ termbox pcre ];
-
-              NIX_LDFLAGS = "-lpcre";
+              lockFile = ./lock.json;
 
-              buildPhase = ''
-                export HOME=$TMPDIR;
-                nim --threads:on -p:${nimbox} -p:${lscolors}/src -p:${wcwidth}/src c -d:release src/nimmm.nim
-              '';
-
-              installPhase = ''
-                install -Dt $out/bin src/nimmm
-              '';
+              buildInputs = with pkgs; [ termbox pcre ];
             };
 
           defaultPackage = packages.nimmm;
 
-        })) // {
-      hydraJobs.nimmm.x86_64-linux = self.packages.x86_64-linux.nimmm;
-    };
+        }));
 }
diff --git a/lock.json b/lock.json
new file mode 100644
index 0000000..fb705b4
--- /dev/null
+++ b/lock.json
@@ -0,0 +1,40 @@
+{
+  "depends": [
+    {
+      "method": "fetchzip",
+      "packages": [
+        "lscolors"
+      ],
+      "path": "/nix/store/h2rqjnvjg3xihh88f2hm72506vpklilz-source",
+      "ref": "v0.3.3",
+      "rev": "668b46c835944254a445b9cc6dfb887e38fa13f1",
+      "sha256": "0526hqh46lcfsvymb67ldsc8xbfn24vicn3b8wrqnh6mag8wynf4",
+      "srcDir": "src",
+      "url": "https://github.com/joachimschmidt557/nim-lscolors/archive/668b46c835944254a445b9cc6dfb887e38fa13f1.tar.gz"
+    },
+    {
+      "method": "fetchzip",
+      "packages": [
+        "nimbox"
+      ],
+      "path": "/nix/store/dyv48md5gaz0x61fxi2zc69h05a3jvfq-source",
+      "ref": "master",
+      "rev": "6a56e76c01481176f16ae29b7d7c526bd83f229b",
+      "sha256": "15x1sdfxa1xcqnr68705jfnlv83lm0xnp2z9iz3pgc4bz5vwn4x1",
+      "srcDir": "",
+      "url": "https://github.com/dom96/nimbox/archive/6a56e76c01481176f16ae29b7d7c526bd83f229b.tar.gz"
+    },
+    {
+      "method": "fetchzip",
+      "packages": [
+        "wcwidth"
+      ],
+      "path": "/nix/store/inpq6nm27r7ixyjsdsm4sg6qna7d2vbc-source",
+      "ref": "v0.1.3",
+      "rev": "fd60d2dd10fd945a471450551ba471c3be80df52",
+      "sha256": "06b9ylqbjcxgm9mjfzljbi8gr9sbajykcqpcxgyqymynqyhxmqjn",
+      "srcDir": "src",
+      "url": "https://github.com/shoyu777/wcwidth-nim/archive/fd60d2dd10fd945a471450551ba471c3be80df52.tar.gz"
+    }
+  ]
+}