chore : declare dev environment using nix

Signed-off-by: Archisman <[email protected]>

Author: Archisman-Mridha

Diff for: .direnv/flake-profile

@@ -0,0 +1 @@
+flake-profile-1-link

Diff for: .direnv/flake-profile-1-link

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+/nix/store/x5bkjwj9aq65j7k58mlhdk22gdd3vrfx-nix-shell-env

Diff for: .envrc

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+use flake

Diff for: .gitignore

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+/target

Diff for: Cargo.lock

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+[package]
+name = "arcdb"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]

Diff for: Cargo.toml

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+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+
+    rust-overlay = {
+      url = "github:oxalica/rust-overlay";
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+      };
+    };
+  };
+
+  outputs =
+    {
+      self,
+      nixpkgs,
+      flake-utils,
+      rust-overlay,
+    }:
+    flake-utils.lib.eachDefaultSystem (
+      system:
+      let
+        overlays = [
+          (import rust-overlay)
+        ];
+
+        pkgs = import nixpkgs {
+          inherit system overlays;
+          config.allowUnfree = true;
+        };
+
+        projectRootPath = ./.;
+        rustToolchainFilePath = projectRootPath + /rust-toolchain.toml;
+      in
+      with pkgs;
+      {
+        nativeBuildInputs = [
+          (rust-bin.fromRustupToolchainFile rustToolchainFilePath)
+        ];
+
+        devShells.default = mkShell {
+          buildInputs = [
+            llvm
+            rustup
+            (rust-bin.fromRustupToolchainFile rustToolchainFilePath)
+            wasm-tools
+          ];
+        };
+      }
+    );
+}

Diff for: flake.lock

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+[toolchain]
+channel = "stable"
+profile = "default"
+components = []

Diff for: flake.nix

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+group_imports = "One"
+imports_granularity = "One"
+
+tab_spaces = 2
+
+max_width = 100
+comment_width = 100
+
+use_field_init_shorthand = true
+
+control_brace_style = "ClosingNextLine"

Diff for: rust-toolchain.toml

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+#![allow(non_snake_case)]
+
+fn main() {}