feat: add nix flake

.envrc

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+watch_file flake.nix flake.lock devshell.nix
+use flake
+source_env_if_exists .envrc.local

.gitignore

@@ -0,0 +1,6 @@
+# direnv
+.direnv/
+
+# nix
+result
+result-*

devshell.nix

@@ -0,0 +1,5 @@
+{ pkgs }:
+
+pkgs.mkShell {
+  packages = [ ];
+}

flake.lock

@@ -0,0 +1,64 @@
+{
+  "nodes": {
+    "blueprint": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1763308703,
+        "narHash": "sha256-O9Y+Wer8wOh+N+4kcCK5p/VLrXyX+ktk0/s3HdZvJzk=",
+        "owner": "numtide",
+        "repo": "blueprint",
+        "rev": "5a9bba070f801d63e2af3c9ef00b86b212429f4f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "blueprint",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1767047869,
+        "narHash": "sha256-tzYsEzXEVa7op1LTnrLSiPGrcCY6948iD0EcNLWcmzo=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "89dbf01df72eb5ebe3b24a86334b12c27d68016a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-25.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "blueprint": "blueprint",
+        "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 +1,14 @@
+{
+  description = "My common project templates";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs?ref=nixos-25.11";
+
+    blueprint = {
+      url = "github:numtide/blueprint";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+
+  outputs = inputs: inputs.blueprint { inherit inputs; };
+}