Initialize Nix Flake

Set up a Nix flake with bun and typescript for development.

Steps

1. •

   Check for existing flake.nix - ask before overwriting

2. •

   Get project name from directory name or package.json if exists

3. •

   Create flake.nix:

   nix

   {
     description = "<project-name>";
   
     inputs = {
       nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
     };
   
     outputs = {nixpkgs, ...}: let
       forAllSystems = function:
         nixpkgs.lib.genAttrs nixpkgs.lib.systems.flakeExposed
         (system: function nixpkgs.legacyPackages.${system});
     in {
       formatter = forAllSystems (pkgs: pkgs.alejandra);
       devShells = forAllSystems (pkgs: {
         default = pkgs.mkShell {
           packages = with pkgs; [
             bun
             typescript
             lefthook
           ];
         };
       });
     };
   }
   

4. •

   Create .envrc (if not exists):

   code

   use flake
   

5. •

   Add to .gitignore (if not present):

   code

   .direnv/
   result
   

6. •

   Run direnv allow if direnv is available

7. •

   Summary: Created files, remind to run nix develop or let direnv activate

Notes

• •This creates a minimal devShell; add more packages as needed
• •For projects needing nix packaging (bun2nix), that's a separate enhancement
• •lefthook included by default for git hooks support