Restructure templates to include Nix development environment

Moved template directories into templates/ subdirectory (templates/vanilla/
and templates/nextjs/) with complete Nix configuration in each. This ensures
initialized projects have the full development environment with Nix, Bun,
and all tooling out of the box.

Changes:
- Created templates/vanilla/ with flake.nix, nix/, .envrc, and all files
- Created templates/nextjs/ with flake.nix, nix/, .envrc, and all files
- Updated template paths in nix/modules/template.nix

nix/modules/template.nix

@@ -9,13 +9,13 @@ in {
       };
 
       nextjs = {
-        description = "Next.js TypeScript template with App Router for Vercel";
+        description = "Next.js TypeScript template with App Router";
         path = "${root}/templates/nextjs";
       };
     };
 
     om.templates = {
-      javascript-vanilla = {
+      default = {
         template = templates.default;
         params = [
           {
@@ -26,7 +26,7 @@ in {
         ];
       };
 
-      javascript-nextjs = {
+      nextjs = {
         template = templates.nextjs;
         params = [
           {

templates/nextjs/.envrc

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

templates/nextjs/flake.lock

@@ -0,0 +1,77 @@
+{
+  "nodes": {
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib"
+      },
+      "locked": {
+        "lastModified": 1760948891,
+        "narHash": "sha256-TmWcdiUUaWk8J4lpjzu4gCGxWY6/Ok7mOK4fIFfBuU4=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "864599284fc7c0ba6357ed89ed5e2cd5040f0c04",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1751274312,
+        "narHash": "sha256-/bVBlRpECLVzjV19t5KMdMFWSwKLtb5RyXdjz3LJT+g=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "50ab793786d9de88ee30ec4e4c24fb4236fc2674",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-24.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-lib": {
+      "locked": {
+        "lastModified": 1754788789,
+        "narHash": "sha256-x2rJ+Ovzq0sCMpgfgGaaqgBSwY+LST+WbZ6TytnT9Rk=",
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "rev": "a73b9c743612e4244d865a2fdee11865283c04e6",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-parts": "flake-parts",
+        "nixpkgs": "nixpkgs",
+        "systems": "systems"
+      }
+    },
+    "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
+}

templates/nextjs/flake.nix

@@ -0,0 +1,18 @@
+{
+  description = "Nix templates for JavaScript projects, powered by Bun";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-24.11";
+    systems.url = "github:nix-systems/default";
+    flake-parts.url = "github:hercules-ci/flake-parts";
+  };
+
+  outputs = inputs:
+    inputs.flake-parts.lib.mkFlake {inherit inputs;} {
+      systems = import inputs.systems;
+      imports = [
+        ./nix/modules/devshell.nix
+        ./nix/modules/template.nix
+      ];
+    };
+}

templates/nextjs/nix/modules/devshell.nix

@@ -0,0 +1,45 @@
+{inputs, lib, ...}: let
+  # FHS compatibility for NixOS (steam-run wrapper)
+  # Enable if bun-installed binaries fail to find system libraries
+  fhs = false;
+in {
+  perSystem = {system, ...}: let
+    pkgs = import inputs.nixpkgs {
+      inherit system;
+      config.allowUnfree = fhs;
+    };
+
+    fhsPackages = lib.optionals fhs [
+      pkgs.steam-run
+    ];
+
+    fhsSetup = lib.optionalString fhs ''
+      alias bun="steam-run bun"
+    '';
+  in {
+    devShells.default = pkgs.mkShell {
+      nativeBuildInputs = with pkgs;
+        [
+          bun
+          nodejs
+          typescript
+          eslint
+          just
+          prettierd
+        ]
+        ++ fhsPackages;
+
+      shellHook = ''
+        ${fhsSetup}
+
+        if [ -f package.json ]; then
+          echo "Installing dependencies..."
+          bun install
+        fi
+
+        echo ""
+        echo "💡 Run 'just' to see available commands"
+      '';
+    };
+  };
+}

templates/nextjs/nix/modules/template.nix

@@ -0,0 +1,41 @@
+{inputs, ...}: let
+  root = inputs.self;
+in {
+  flake = rec {
+    templates = {
+      default = {
+        description = "Minimal JavaScript template with Vite and Bun";
+        path = "${root}/vanilla";
+      };
+
+      nextjs = {
+        description = "Next.js TypeScript template with App Router";
+        path = "${root}/nextjs";
+      };
+    };
+
+    om.templates = {
+      default = {
+        template = templates.default;
+        params = [
+          {
+            name = "package-name";
+            description = "Name of the JavaScript package";
+            placeholder = "my-project";
+          }
+        ];
+      };
+
+      nextjs = {
+        template = templates.nextjs;
+        params = [
+          {
+            name = "package-name";
+            description = "Name of the Next.js project";
+            placeholder = "my-nextjs-app";
+          }
+        ];
+      };
+    };
+  };
+}

templates/vanilla/.envrc

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

templates/vanilla/flake.lock

@@ -0,0 +1,77 @@
+{
+  "nodes": {
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib"
+      },
+      "locked": {
+        "lastModified": 1760948891,
+        "narHash": "sha256-TmWcdiUUaWk8J4lpjzu4gCGxWY6/Ok7mOK4fIFfBuU4=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "864599284fc7c0ba6357ed89ed5e2cd5040f0c04",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1751274312,
+        "narHash": "sha256-/bVBlRpECLVzjV19t5KMdMFWSwKLtb5RyXdjz3LJT+g=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "50ab793786d9de88ee30ec4e4c24fb4236fc2674",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-24.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-lib": {
+      "locked": {
+        "lastModified": 1754788789,
+        "narHash": "sha256-x2rJ+Ovzq0sCMpgfgGaaqgBSwY+LST+WbZ6TytnT9Rk=",
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "rev": "a73b9c743612e4244d865a2fdee11865283c04e6",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-parts": "flake-parts",
+        "nixpkgs": "nixpkgs",
+        "systems": "systems"
+      }
+    },
+    "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
+}

templates/vanilla/flake.nix

@@ -0,0 +1,18 @@
+{
+  description = "Nix templates for JavaScript projects, powered by Bun";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-24.11";
+    systems.url = "github:nix-systems/default";
+    flake-parts.url = "github:hercules-ci/flake-parts";
+  };
+
+  outputs = inputs:
+    inputs.flake-parts.lib.mkFlake {inherit inputs;} {
+      systems = import inputs.systems;
+      imports = [
+        ./nix/modules/devshell.nix
+        ./nix/modules/template.nix
+      ];
+    };
+}

templates/vanilla/nix/modules/devshell.nix

@@ -0,0 +1,45 @@
+{inputs, lib, ...}: let
+  # FHS compatibility for NixOS (steam-run wrapper)
+  # Enable if bun-installed binaries fail to find system libraries
+  fhs = false;
+in {
+  perSystem = {system, ...}: let
+    pkgs = import inputs.nixpkgs {
+      inherit system;
+      config.allowUnfree = fhs;
+    };
+
+    fhsPackages = lib.optionals fhs [
+      pkgs.steam-run
+    ];
+
+    fhsSetup = lib.optionalString fhs ''
+      alias bun="steam-run bun"
+    '';
+  in {
+    devShells.default = pkgs.mkShell {
+      nativeBuildInputs = with pkgs;
+        [
+          bun
+          nodejs
+          typescript
+          eslint
+          just
+          prettierd
+        ]
+        ++ fhsPackages;
+
+      shellHook = ''
+        ${fhsSetup}
+
+        if [ -f package.json ]; then
+          echo "Installing dependencies..."
+          bun install
+        fi
+
+        echo ""
+        echo "💡 Run 'just' to see available commands"
+      '';
+    };
+  };
+}

templates/vanilla/nix/modules/template.nix

@@ -0,0 +1,41 @@
+{inputs, ...}: let
+  root = inputs.self;
+in {
+  flake = rec {
+    templates = {
+      default = {
+        description = "Minimal JavaScript template with Vite and Bun";
+        path = "${root}/vanilla";
+      };
+
+      nextjs = {
+        description = "Next.js TypeScript template with App Router";
+        path = "${root}/nextjs";
+      };
+    };
+
+    om.templates = {
+      default = {
+        template = templates.default;
+        params = [
+          {
+            name = "package-name";
+            description = "Name of the JavaScript package";
+            placeholder = "my-project";
+          }
+        ];
+      };
+
+      nextjs = {
+        template = templates.nextjs;
+        params = [
+          {
+            name = "package-name";
+            description = "Name of the Next.js project";
+            placeholder = "my-nextjs-app";
+          }
+        ];
+      };
+    };
+  };
+}