build: add tooling and dev environment configs

Problem: need formatting, linting, testing, and nix dev shell configs.

Solution: add stylua, selene, lua-language-server, busted, pre-commit,
flake.nix, and luarocks rockspec configuration.

.busted

@@ -0,0 +1,9 @@
+return {
+  _all = {
+    lua = 'nvim -l',
+    ROOT = { './spec/' },
+  },
+  default = {
+    verbose = true,
+  },
+}

.luarc.json

@@ -0,0 +1,8 @@
+{
+  "runtime.version": "LuaJIT",
+  "runtime.path": ["lua/?.lua", "lua/?/init.lua"],
+  "diagnostics.globals": ["vim", "jit"],
+  "workspace.library": ["$VIMRUNTIME/lua", "${3rd}/luv/library"],
+  "workspace.checkThirdParty": false,
+  "completion.callSnippet": "Replace"
+}

.pre-commit-config.yaml

@@ -0,0 +1,17 @@
+minimum_pre_commit_version: '3.5.0'
+
+repos:
+  - repo: https://github.com/JohnnyMorganz/StyLua
+    rev: v2.3.1
+    hooks:
+      - id: stylua-github
+        name: stylua (Lua formatter)
+        files: \.lua$
+        pass_filenames: true
+
+  - repo: https://github.com/pre-commit/mirrors-prettier
+    rev: v4.0.0-alpha.8
+    hooks:
+      - id: prettier
+        name: prettier
+        files: \.(md|toml|yaml|yml|sh)$

flake.lock

@@ -0,0 +1,43 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1771892004,
+        "narHash": "sha256-V96pa9awm6hjnf8yGJeoC4uOirYDEPsaBbuU0stROQI=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "5e4522be6bdf1600682a6f383434b057b2d77a37",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "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
+}

flake.nix

@@ -0,0 +1,36 @@
+{
+  description = "task.nvim — oil-like task management for Neovim";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    systems.url = "github:nix-systems/default";
+  };
+
+  outputs =
+    {
+      nixpkgs,
+      systems,
+      ...
+    }:
+    let
+      forEachSystem = f: nixpkgs.lib.genAttrs (import systems) (system: f nixpkgs.legacyPackages.${system});
+    in
+    {
+      devShells = forEachSystem (pkgs: {
+        default = pkgs.mkShell {
+          packages = [
+            (pkgs.luajit.withPackages (
+              ps: with ps; [
+                busted
+                nlua
+              ]
+            ))
+            pkgs.prettier
+            pkgs.stylua
+            pkgs.selene
+            pkgs.lua-language-server
+          ];
+        };
+      });
+    };
+}

rockspec

@@ -0,0 +1,30 @@
+rockspec_format = '3.0'
+package = 'todo.nvim'
+version = 'scm-1'
+
+source = {
+  url = 'git+https://github.com/barrettruth/todo.nvim.git',
+}
+
+description = {
+  summary = 'Oil-like task management for Neovim',
+  homepage = 'https://github.com/barrettruth/todo.nvim',
+  license = 'MIT',
+}
+
+dependencies = {
+  'lua >= 5.1',
+}
+
+test_dependencies = {
+  'nlua',
+  'busted >= 2.1.1',
+}
+
+test = {
+  type = 'busted',
+}
+
+build = {
+  type = 'builtin',
+}

selene.toml

@@ -0,0 +1,4 @@
+std = 'vim'
+
+[lints]
+bad_string_escape = 'allow'

stylua.toml

@@ -0,0 +1,8 @@
+column_width = 100
+line_endings = "Unix"
+indent_type = "Spaces"
+indent_width = 2
+quote_style = "AutoPreferSingle"
+call_parentheses = "Always"
+[sort_requires]
+enabled = true

vim.yaml

@@ -0,0 +1,26 @@
+---
+base: lua51
+name: vim
+lua_versions:
+  - luajit
+globals:
+  vim:
+    any: true
+  jit:
+    any: true
+  assert:
+    any: true
+  describe:
+    any: true
+  it:
+    any: true
+  before_each:
+    any: true
+  after_each:
+    any: true
+  spy:
+    any: true
+  stub:
+    any: true
+  bit:
+    any: true