diff --git a/flake.lock b/flake.lock
index 3a64c79..4858a52 100644
--- a/flake.lock
+++ b/flake.lock
@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1705625727,
-        "narHash": "sha256-naMq6+TNLpEiBBjc0XaCbMLYJxJXWTZz4JGSpYGgIOM=",
+        "lastModified": 1719249093,
+        "narHash": "sha256-0q1haa3sw6GbmJ+WhogMnducZGjEaCa/iR6hF2vq80I=",
         "owner": "ipetkov",
         "repo": "crane",
-        "rev": "8f515142e805dc377cf8edb0ff75d14a11307f89",
+        "rev": "9791c77eb7e98b8d8ac5b0305d47282f994411ca",
         "type": "github"
       },
       "original": {
@@ -28,11 +28,11 @@
         "rust-analyzer-src": "rust-analyzer-src"
       },
       "locked": {
-        "lastModified": 1708150887,
-        "narHash": "sha256-lyEaeShLZqQtFO+ULLfxF9fYaYpTal0Ck1B+iKYBOMs=",
+        "lastModified": 1719383337,
+        "narHash": "sha256-7aKGFBZbcKknVrjIX/N+n4sgHCT+vdvWYWMojQml8Fk=",
         "owner": "nix-community",
         "repo": "fenix",
-        "rev": "761431323e30846bae160e15682cfa687c200606",
+        "rev": "773bb2f15cebb936259f460f6fcfdd90019692ab",
         "type": "github"
       },
       "original": {
@@ -55,32 +55,16 @@
         "url": "https://flakehub.com/f/edolstra/flake-compat/1.tar.gz"
       }
     },
-    "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": 1705309234,
-        "narHash": "sha256-uNRRNRKmJyCRC/8y1RqBkqWBLM034y4qN7EprSdmgyA=",
+        "lastModified": 1710146030,
+        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "1ef2e671c3b0c19053962c07dbda38332dcebf26",
+        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
         "type": "github"
       },
       "original": {
@@ -89,53 +73,13 @@
         "type": "github"
       }
     },
-    "libgit2": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1711487526,
-        "narHash": "sha256-UzWAyEd171lA5XtwDpo77Ahy/2yduATyoZrwD0UQBJ0=",
-        "owner": "libgit2",
-        "repo": "libgit2",
-        "rev": "4bb051adec18a10b7efbb4a612a83c1c1b8d38a0",
-        "type": "github"
-      },
-      "original": {
-        "owner": "libgit2",
-        "repo": "libgit2",
-        "type": "github"
-      }
-    },
-    "nix": {
-      "inputs": {
-        "flake-compat": "flake-compat_2",
-        "libgit2": "libgit2",
-        "nixpkgs": [
-          "nixpkgs"
-        ],
-        "nixpkgs-regression": "nixpkgs-regression"
-      },
-      "locked": {
-        "lastModified": 1711461841,
-        "narHash": "sha256-iRtvOcJbohyhav+deEajI/Ln/LU/6WqSfLyXDQaNEro=",
-        "owner": "NixOS",
-        "repo": "nix",
-        "rev": "3272ed0d5813175ea240ce2dfadf9de24c9d14ae",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "latest-release",
-        "repo": "nix",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1705697961,
-        "narHash": "sha256-XepT3WS516evSFYkme3GrcI3+7uwXHqtHbip+t24J7E=",
+        "lastModified": 1719317636,
+        "narHash": "sha256-bu0xbu2Z6DDzA9LGV81yJunIti6r7tjUImeR8orAL/I=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e5d1c87f5813afde2dda384ac807c57a105721cc",
+        "rev": "9c513fc6fb75142f6aec6b7545cb8af2236b80f5",
         "type": "github"
       },
       "original": {
@@ -145,29 +89,12 @@
         "type": "github"
       }
     },
-    "nixpkgs-regression": {
-      "locked": {
-        "lastModified": 1643052045,
-        "narHash": "sha256-uGJ0VXIhWKGXxkeNnq4TvV3CIOkUJ3PAoLZ3HMzNVMw=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "215d4d0fd80ca5163643b03a33fde804a29cc1e2",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "215d4d0fd80ca5163643b03a33fde804a29cc1e2",
-        "type": "github"
-      }
-    },
     "root": {
       "inputs": {
         "crane": "crane",
         "fenix": "fenix",
         "flake-compat": "flake-compat",
         "flake-utils": "flake-utils",
-        "nix": "nix",
         "nixpkgs": "nixpkgs",
         "treefmt-nix": "treefmt-nix"
       }
@@ -175,11 +102,11 @@
     "rust-analyzer-src": {
       "flake": false,
       "locked": {
-        "lastModified": 1708018577,
-        "narHash": "sha256-B75VUqKvQeIqAUnYw4bGjY3xxrCqzRBJHLbmD0MAWEw=",
+        "lastModified": 1719378198,
+        "narHash": "sha256-c1jWpdPlZyL6/a0pWa30680ivP7nMLNBPuz5hMGoifg=",
         "owner": "rust-lang",
         "repo": "rust-analyzer",
-        "rev": "b9b0d29b8e69b02457cfabe20c4c69cdb45f3cc5",
+        "rev": "b33a0cae335b85e11a700df2d9a7c0006a3b80ec",
         "type": "github"
       },
       "original": {
@@ -211,11 +138,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1718522839,
-        "narHash": "sha256-ULzoKzEaBOiLRtjeY3YoGFJMwWSKRYOic6VNw2UyTls=",
+        "lastModified": 1719243788,
+        "narHash": "sha256-9T9mSY35EZSM1KAwb7K9zwQ78qTlLjosZgtUGnw4rn4=",
         "owner": "numtide",
         "repo": "treefmt-nix",
-        "rev": "68eb1dc333ce82d0ab0c0357363ea17c31ea1f81",
+        "rev": "065a23edceff48f948816b795ea8cc6c0dee7cdf",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 2690451..cbac349 100644
--- a/flake.nix
+++ b/flake.nix
@@ -6,8 +6,6 @@
   inputs.fenix.url = "github:nix-community/fenix";
   inputs.flake-compat.url = "https://flakehub.com/f/edolstra/flake-compat/1.tar.gz";
   inputs.flake-utils.url = "github:numtide/flake-utils";
-  inputs.nix.inputs.nixpkgs.follows = "nixpkgs";
-  inputs.nix.url = "github:NixOS/nix/latest-release";
   inputs.treefmt-nix.url = "github:numtide/treefmt-nix";
   inputs.treefmt-nix.inputs.nixpkgs.follows = "nixpkgs";
 
@@ -17,7 +15,6 @@
     fenix,
     flake-compat,
     flake-utils,
-    nix,
     nixpkgs,
     treefmt-nix,
   }: let
@@ -26,8 +23,8 @@
     flake-utils.lib.eachDefaultSystem (system: let
       pkgs = nixpkgs.legacyPackages.${system};
       toolchain = fenix.packages.${system}.stable.completeToolchain;
-      craneLib = crane.lib.${system}.overrideToolchain toolchain;
-      nixDrv = nix.packages.${system}.nix;
+      craneLib = (crane.mkLib pkgs).overrideToolchain toolchain;
+      nixDrv = pkgs.nixVersions.nix_2_21;
 
       isolatedNix = postfix:
         pkgs.symlinkJoin {
diff --git a/src/main.rs b/src/main.rs
index 5ce1338..ae1098f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -67,10 +67,6 @@ async fn main() -> anyhow::Result<()> {
     }
 }
 
-#[derive(Debug, Clone, derive_more::Display)]
-#[display("{}", _0)]
-struct Eprintln(String);
-
 #[derive(Debug, derive_more::Deref)]
 struct PtyLine(String);