lazy.nvim/docs/developers.md

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# 🔥 Developers
To make it easier for users to install your plugin, you can include a [package spec](/packages) in your repo.
## Best Practices
- If your plugin needs `setup()`, then create a simple `lazy.lua` file like this:
```lua
return { "me/my-plugin", opts = {} }
```
- Plugins that are pure lua libraries should be lazy-loaded with `lazy = true`.
```lua
{ "nvim-lua/plenary.nvim", lazy = true }
```
- Only use `dependencies` if a plugin needs the dep to be installed **AND** loaded.
Lua plugins/libraries are automatically loaded when they are `require()`d,
so they don't need to be in `dependencies`.
:::tip[GOOD]
```lua
{ "folke/todo-comments.nvim", opts = {} },
{ "nvim-lua/plenary.nvim", lazy = true },
```
:::
:::danger[BAD]
```lua
{
"folke/todo-comments.nvim",
opts = {},
-- This will always load plenary as soon as todo-comments loads,
-- even when todo-comments doesn't use it.
dependencies = { "nvim-lua/plenary.nvim", lazy = true },
},
```
:::
- Inside a `build` function or `*.lua` build file, use `coroutine.yield(status_msg)` to show progress.
- Don't change the `cwd` in your build function, since builds run in parallel and changing the `cwd` will affect other builds.
## Building
The spec **build** property can be one of the following:
- `fun(plugin: LazyPlugin)`: a function that builds the plugin.
- `*.lua`: a Lua file that builds the plugin (like `build.lua`)
- `":Command"`: a Neovim command
- `"rockspec"`: this will run `luarocks make` in the plugin's directory
This is automatically set by the `rockspec` [package](/packages) source.
- any other **string** will be run as a shell command
- a `list` of any of the above to run multiple build steps
- if no `build` is specified, but a `build.lua` file exists, that will be used instead.
Build functions and `*.lua` files run asynchronously in a coroutine.
Use `coroutine.yield(status_msg)` to show progress.
Yielding will also schedule the next `coroutine.resume()` to run in the next tick, so you can do long-running tasks without blocking Neovim.
:::tip
If you need to know the directory of your build lua file, you can use:
```lua
local dir = vim.fn.fnamemodify(debug.getinfo(1, "S").source:sub(2), ":p:h")
```
:::