Add Nix snippets

modules/home-manager/coding/neovim/config/lua/opdavies/snippets/nix.lua

@@ -0,0 +1,63 @@
+require("luasnip.session.snippet_collection").clear_snippets "nix"
+
+local ls = require "luasnip"
+
+local i = ls.insert_node
+local s = ls.snippet
+
+local fmta = require("luasnip.extras.fmt").fmta
+local rep = require("luasnip.extras").rep
+
+ls.add_snippets("nix", {
+  s("homepackages", fmta("home.packages = with pkgs; [ <> ];", i(0))),
+
+  s(
+    "imports",
+    fmta(
+      [[
+      {
+        imports = [
+          <>
+        ];
+      }
+      ]],
+      { i(0) }
+    )
+  ),
+
+  s(
+    "newmodule",
+    fmta(
+      [[
+      { config, lib, ... }:
+
+      with lib;
+
+      let
+        name = "<>";
+        cfg = config.<>.<>;
+      in
+      {
+        options.<>.<> = {
+          enable = mkEnableOption "Enable ${name}";<>
+        };
+
+        config = mkIf cfg.enable {
+          <>
+        };
+      }
+      ]],
+      {
+        i(1),
+        i(2),
+        rep(1),
+        rep(2),
+        rep(1),
+        i(3),
+        i(0),
+      }
+    )
+  ),
+
+  s("systempackages", fmta("environment.systemPackages = with pkgs; [<>];", i(0))),
+})