lsp/otter: init (#385)

* r: implementing lsp

* r: version bump to context fixes treesitter bug

* r: changing treesitter package definition to mkGrammarOption

* added changelog entry

* created otter file

* created otter file

* update

* update

* otter: fixing fixing input

* committing flake.lock

* fixed typo

* configuration: disabling ccc and enabling otter

* added assertion to make sure ccc and otter aren't enabled at the same time

* configuration: otter set for isMaximal

* otter: changelog

* otter: better changelog

* otter-nvim: renamed from otter to otter-nvim

* otter: added setupopts

---------

Co-authored-by: raf <raf@notashelf.dev>

modules/plugins/lsp/otter/config.nix

@@ -0,0 +1,39 @@
+{
+  config,
+  lib,
+  ...
+}: let
+  inherit (lib.modules) mkIf mkMerge;
+  inherit (lib.nvim.dag) entryAnywhere;
+  inherit (lib.nvim.lua) toLuaObject;
+  inherit (lib.nvim.binds) addDescriptionsToMappings mkSetBinding;
+
+  cfg = config.vim.lsp;
+
+  self = import ./otter.nix {inherit lib;};
+  mappingDefinitions = self.options.vim.lsp.otter-nvim.mappings;
+  mappings = addDescriptionsToMappings cfg.otter-nvim.mappings mappingDefinitions;
+in {
+  config = mkIf (cfg.enable && cfg.otter-nvim.enable) {
+    assertions = [
+      {
+        assertion = !config.vim.utility.ccc.enable;
+        message = ''
+          ccc and otter have a breaking conflict. It's been reported upstream. Until it's fixed, disable one of them
+        '';
+      }
+    ];
+    vim = {
+      startPlugins = ["otter-nvim"];
+
+      maps.normal = mkMerge [
+        (mkSetBinding mappings.toggle "<cmd>lua require'otter'.activate()<CR>")
+      ];
+
+      pluginRC.otter-nvim = entryAnywhere ''
+        -- Enable otter diagnostics viewer
+        require("otter").setup({${toLuaObject cfg.otter-nvim.setupOpts}})
+      '';
+    };
+  };
+}