From f5afb4953ff1e9dedf87c253ae9d6f57afc468df Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Tue, 9 Apr 2024 17:56:28 +0100
Subject: [PATCH] WIP

---
 flake.nix                | 18 ++++++++++++++++++
 scripts/minimal_init.lua | 19 +++++++++++++++++++
 2 files changed, 37 insertions(+)
 create mode 100644 scripts/minimal_init.lua

diff --git a/flake.nix b/flake.nix
index e7053c4..7449fd2 100644
--- a/flake.nix
+++ b/flake.nix
@@ -41,11 +41,21 @@
     eachDefaultSystem
       (system:
       let
+        inherit (nixpkgs) lib;
         pkgs = import nixpkgs {
           inherit system;
           overlays = [ self.overlays.default ];
         };
 
+        # FIXME: does it pickup the parser correctly?
+        nvim-test = pkgs.writeShellScriptBin "nvim-test" ''
+          export NVIM_PLENARY='${pkgs.vimPlugins.plenary-nvim}'
+          export NVIM_TREESITTER='${pkgs.vimPlugins.nvim-treesitter}'
+
+          ${pkgs.neovim}/bin/nvim --headless --noplugin -u scripts/minimal_init.lua \
+              -c "PlenaryBustedDirectory test/ { minimal_init = '${./scripts/minimal_init.lua}' }"
+        '';
+
         bump-version = pkgs.writeShellScriptBin "bump-version" ''
           set -eu
 
@@ -90,6 +100,13 @@
                 enable = true;
               };
 
+              nvim-test = {
+                enable = true;
+                name = "nvim tests";
+                entry = "${lib.getExe nvim-test}";
+                pass_filenames = false;
+              };
+
               tree-sitter = {
                 enable = true;
                 name = "tree-sitter tests";
@@ -112,6 +129,7 @@
             nativeBuildInputs = with pkgs; [
               bump-version
               nodejs
+              nvim-test
               # FIXME: waiting on #301336
               # (tree-sitter.override { webUISupport = true; })
               tree-sitter
diff --git a/scripts/minimal_init.lua b/scripts/minimal_init.lua
new file mode 100644
index 0000000..d43d3dc
--- /dev/null
+++ b/scripts/minimal_init.lua
@@ -0,0 +1,19 @@
+vim.opt.runtimepath:append(os.getenv("NVIM_PLENARY"))
+vim.opt.runtimepath:append(os.getenv("NVIM_TREESITTER"))
+
+vim.cmd.runtime({ "plugin/plenary.vim", bang = true })
+vim.cmd.runtime({ "plugin/nvim-treesitter.lua", bang = true })
+
+vim.filetype.add({
+  extension = {
+    bp = "bp",
+  },
+})
+
+vim.o.swapfile = false
+vim.bo.swapfile = false
+
+require("nvim-treesitter.configs").setup({
+  indent = { enable = true },
+  highlight = { enable = true },
+})