neovim: add codecompanion plugin

neovim/plugins/codecompanion.nix

@@ -0,0 +1,56 @@
+{ lib, config, ... }:
+
+let
+  inherit (lib.nix2lua) return lambda0 pipe1 require call;
+
+  reqCodeCompanionAdapters = require "codecompanion.adapters";
+
+  mkOllamaAdapter = data:
+    lambda0
+      (return (pipe1
+        reqCodeCompanionAdapters
+        (call "extend" [ "ollama" data ])
+      ));
+
+  adapters = {
+    mistral = mkOllamaAdapter {
+      name = "mistral";
+      schema = {
+        model.default = "mistral:7b";
+        num_ctx.default = 16384;
+        num_predict.default = -1;
+      };
+    };
+    codellama = mkOllamaAdapter {
+      name = "codellama";
+      schema = {
+        model.default = "codellama:7b";
+        num_ctx.default = 16384;
+        num_predict.default = -1;
+      };
+    };
+  };
+in
+{
+  # dependencies
+  plugin.plenary-nvim = { };
+
+  plugin.codecompanion-nvim = {
+    enable = true;
+    name = "codecompanion";
+    setupSettings = {
+      inherit adapters;
+      strategies = {
+        chat.adapter = "mistral";
+        inline.adapter = "codellama";
+        cmd.adapter = "codellama";
+      };
+    };
+  };
+
+  plugin.nvim-cmp.setupSettings = lib.mkIf config.plugins.nvim-cmp.enable {
+    sources = {
+      per_filetype.codecompanion = [ "codecompanion" ];
+    };
+  };
+}

neovim/plugins/default.nix

@@ -1,6 +1,7 @@
 {
   imports = [
     ./ollama.nix
+    ./codecompanion.nix
     # ./spring-boot.nix
   ];
 }