feat: do error handling with anyhow, slight refactor

.envrc

@@ -1 +0,0 @@
-use flake

.gitignore

@@ -1,2 +1 @@
 target
-.direnv

flake.lock

@@ -1,77 +0,0 @@
-{
-  "nodes": {
-    "flake-parts": {
-      "inputs": {
-        "nixpkgs-lib": "nixpkgs-lib"
-      },
-      "locked": {
-        "lastModified": 1769996383,
-        "narHash": "sha256-AnYjnFWgS49RlqX7LrC4uA+sCCDBj0Ry/WOJ5XWAsa0=",
-        "owner": "hercules-ci",
-        "repo": "flake-parts",
-        "rev": "57928607ea566b5db3ad13af0e57e921e6b12381",
-        "type": "github"
-      },
-      "original": {
-        "owner": "hercules-ci",
-        "repo": "flake-parts",
-        "type": "github"
-      }
-    },
-    "import-tree": {
-      "locked": {
-        "lastModified": 1763762820,
-        "narHash": "sha256-ZvYKbFib3AEwiNMLsejb/CWs/OL/srFQ8AogkebEPF0=",
-        "owner": "vic",
-        "repo": "import-tree",
-        "rev": "3c23749d8013ec6daa1d7255057590e9ca726646",
-        "type": "github"
-      },
-      "original": {
-        "owner": "vic",
-        "repo": "import-tree",
-        "type": "github"
-      }
-    },
-    "nixpkgs": {
-      "locked": {
-        "lastModified": 1770197578,
-        "narHash": "sha256-AYqlWrX09+HvGs8zM6ebZ1pwUqjkfpnv8mewYwAo+iM=",
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "rev": "00c21e4c93d963c50d4c0c89bfa84ed6e0694df2",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nixos",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs-lib": {
-      "locked": {
-        "lastModified": 1769909678,
-        "narHash": "sha256-cBEymOf4/o3FD5AZnzC3J9hLbiZ+QDT/KDuyHXVJOpM=",
-        "owner": "nix-community",
-        "repo": "nixpkgs.lib",
-        "rev": "72716169fe93074c333e8d0173151350670b824c",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "nixpkgs.lib",
-        "type": "github"
-      }
-    },
-    "root": {
-      "inputs": {
-        "flake-parts": "flake-parts",
-        "import-tree": "import-tree",
-        "nixpkgs": "nixpkgs"
-      }
-    }
-  },
-  "root": "root",
-  "version": 7
-}

flake.nix

@@ -1,13 +0,0 @@
-{
-  description = "rebox: remaking busybox with rust";
-
-  inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
-    flake-parts.url = "github:hercules-ci/flake-parts";
-    import-tree.url = "github:vic/import-tree";
-  };
-
-  outputs = inputs:
-    inputs.flake-parts.lib.mkFlake {inherit inputs;}
-    (inputs.import-tree ./packages/nix);
-}

packages/nix/shell.nix

@@ -1,7 +0,0 @@
-{...}: {
-  perSystem = {pkgs, ...}: {
-    devShells.default = pkgs.mkShell {
-      packages = [pkgs.cargo];
-    };
-  };
-}

packages/nix/systems.nix

@@ -1,5 +0,0 @@
-{...}: {
-  systems = [
-    "x86_64-linux"
-  ];
-}