added flake environment

.envrc

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

.gitignore

@@ -1,2 +1,4 @@
 .zig-cache
 bin
+.direnv/
+.cache/

flake.lock

@@ -0,0 +1,61 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1742889210,
+        "narHash": "sha256-hw63HnwnqU3ZQfsMclLhMvOezpM7RSB0dMAtD5/sOiw=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "698214a32beb4f4c8e3942372c694f40848b360d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,39 @@
+{
+  description = "systems programming x86";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs?ref=nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = {
+    nixpkgs,
+    flake-utils,
+    ...
+  }: let
+    supportedSystems = let
+      inherit (flake-utils.lib) system;
+    in [
+      system.aarch64-linux
+      system.x86_64-linux
+    ];
+  in
+    flake-utils.lib.eachSystem supportedSystems (system: let
+      pkgs = import nixpkgs {inherit system;};
+    in {
+      devShell =
+        pkgs.mkShell
+        {
+          packages = with pkgs; [
+            # (writeShellScriptBin "build" "zig build -Dcpu=baseline")
+            gnumake
+            gdb
+            valgrind
+            zig_0_14
+            qemu
+          ];
+        };
+
+      formatter = pkgs.alejandra;
+    });
+}