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117 lines
4.4 KiB
Markdown
117 lines
4.4 KiB
Markdown
# Pure Lua Configuration {#sec-pure-lua-config}
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We recognize that you might not always want to configure your setup purely in
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Nix, sometimes doing things in Lua is simply the "superior" option. In such a
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case you might want to configure your Neovim instance using Lua, and nothing but
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Lua. It is also possible to mix Lua and Nix configurations.
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Pure Lua or hybrid Lua/Nix configurations can be achieved in two different ways.
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_Purely_, by modifying Neovim's runtime directory or _impurely_ by placing Lua
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configuration in a directory found in `$HOME`. For your convenience, this
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section will document both methods as they can be used.
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## Pure Runtime Directory {#sec-pure-nvf-runtime}
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As of 0.6, nvf allows you to modify Neovim's runtime path to suit your needs.
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One of the ways the new runtime option is to add a configuration **located
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relative to your `flake.nix`**, which must be version controlled in pure flakes
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manner.
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```nix
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{
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# Let us assume we are in the repository root, i.e., the same directory as the
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# flake.nix. For the sake of the argument, we will assume that the Neovim lua
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# configuration is in a nvim/ directory relative to flake.nix.
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vim = {
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additionalRuntimeDirectories = [
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# This will be added to Neovim's runtime paths. Conceptually, this behaves
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# very similarly to ~/.config/nvim but you may not place a top-level
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# init.lua to be able to require it directly.
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./nvim
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];
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};
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}
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```
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This will add the `nvim` directory, or rather, the _store path_ that will be
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realised after your flake gets copied to the Nix store, to Neovim's runtime
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directory. You may now create a `lua/myconfig` directory within this nvim
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directory, and call it with [](#opt-vim.luaConfigRC).
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```nix
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{pkgs, ...}: {
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vim = {
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additionalRuntimeDirectories = [
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# You can list more than one file here.
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./nvim-custom-1
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# To make sure list items are ordered, use lib.mkBefore or lib.mkAfter
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# Simply placing list items in a given order will **not** ensure that
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# this list will be deterministic.
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./nvim-custom-2
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];
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startPlugins = [pkgs.vimPlugins.gitsigns];
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# Neovim supports in-line syntax highlighting for multi-line strings.
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# Simply place the filetype in a /* comment */ before the line.
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luaConfigRC.myconfig = /* lua */ ''
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-- Call the Lua module from ./nvim/lua/myconfig
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require("myconfig")
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-- Any additional Lua configuration that you might want *after* your own
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-- configuration. For example, a plugin setup call.
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require('gitsigns').setup({})
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'';
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};
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}
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```
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## Impure Absolute Directory {#sec-impure-absolute-dir}
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[Neovim 0.9]: https://github.com/neovim/neovim/pull/22128
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As of [Neovim 0.9], {var}`$NVIM_APPNAME` is a variable expected by Neovim to
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decide on the configuration directory. nvf sets this variable as `"nvf"`,
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meaning `~/.config/nvf` will be regarded as _the_ configuration directory by
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Neovim, similar to how `~/.config/nvim` behaves in regular installations. This
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allows some degree of Lua configuration, backed by our low-level wrapper
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[mnw](https://github.com/Gerg-L/mnw). Creating a `lua/` directory located in
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`$NVIM_APPNAME` ("nvf" by default) and placing your configuration in, e.g.,
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`~/.config/nvf/lua/myconfig` will allow you to `require` it as a part of the Lua
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module system through nvf's module system.
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Let's assume your `~/.config/nvf/lua/myconfig/init.lua` consists of the
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following:
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```lua
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-- init.lua
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vim.keymap.set("n", " ", "<Nop>", { silent = true, remap = false })
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vim.g.mapleader = " "
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```
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The following Nix configuration via [](#opt-vim.luaConfigRC) will allow loading
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this
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```nix
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{
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# The attribute name "myconfig-dir" here is arbitrary. It is required to be
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# a *named* attribute by the DAG system, but the name is entirely up to you.
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vim.luaConfigRC.myconfig-dir = ''
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require("myconfig")
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-- Any additional Lua
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'';
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}
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```
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[DAG system]: https://notashelf.github.io/nvf/index.xhtml#ch-using-dags
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After you load your custom configuration, you may use an `init.lua` located in
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your custom configuration directory to configure Neovim exactly as you would
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without a wrapper like nvf. If you want to place your `require` call in a
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specific position (i.e., before or after options you set in nvf) the
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[DAG system] will let you place your configuration in a location of your
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choosing.
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[top-level DAG system]: https://notashelf.github.io/nvf/index.xhtml#ch-vim-luaconfigrc
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