feat: add nvim-cmp keybindings

modules/completion/nvim-cmp/config.nix

@@ -1,5 +1,4 @@
 {
-  pkgs,
   lib,
   config,
   ...
@@ -8,6 +7,12 @@ with lib;
 with builtins; let
   cfg = config.vim.autocomplete;
   lspkindEnabled = config.vim.lsp.enable && config.vim.lsp.lspkind.enable;
+
+  self = import ./nvim-cmp.nix {inherit lib;};
+  mappingDefinitions = self.options.vim.autocomplete.mappings;
+
+  mappings = addDescriptionsToMappings cfg.mappings mappingDefinitions;
+
   builtSources =
     concatMapStringsSep
     "\n"
@@ -46,6 +51,133 @@ in {
       "path" = "[Path]";
     };
 
+    vim.maps.insert = mkMerge [
+      (mkSetLuaBinding mappings.complete ''
+        require('cmp').complete
+      '')
+      (mkSetLuaBinding mappings.confirm ''
+        function()
+          if not require('cmp').confirm({ select = true }) then
+            local termcode = vim.api.nvim_replace_termcodes(${builtins.toJSON mappings.confirm.value}, true, false, true)
+
+            vim.fn.feedkeys(termcode, 'n')
+          end
+        end
+      '')
+      (mkSetLuaBinding mappings.next ''
+        function()
+          local has_words_before = function()
+            local line, col = unpack(vim.api.nvim_win_get_cursor(0))
+            return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match("%s") == nil
+          end
+
+          local cmp = require('cmp')
+
+          local feedkey = function(key, mode)
+            vim.api.nvim_feedkeys(vim.api.nvim_replace_termcodes(key, true, true, true), mode, true)
+          end
+
+          if cmp.visible() then
+            cmp.select_next_item()
+          elseif vim.fn['vsnip#available'](1) == 1 then
+            feedkey("<Plug>(vsnip-expand-or-jump)", "")
+          elseif has_words_before() then
+            cmp.complete()
+          else
+            fallback()
+          end
+        end
+      '')
+      (mkSetLuaBinding mappings.previous ''
+        function()
+          local cmp = require('cmp')
+
+          local feedkey = function(key, mode)
+            vim.api.nvim_feedkeys(vim.api.nvim_replace_termcodes(key, true, true, true), mode, true)
+          end
+
+          if cmp.visible() then
+            cmp.select_prev_item()
+          elseif vim.fn['vsnip#available'](-1) == 1 then
+            feedkeys("<Plug>(vsnip-jump-prev)", "")
+          end
+        end
+      '')
+      (mkSetLuaBinding mappings.close ''
+        require('cmp').mapping.abort
+      '')
+      (mkSetLuaBinding mappings.scrollDocsUp ''
+        function()
+          require('cmp').mapping.scroll_docs(-4)
+        end
+      '')
+      (mkSetLuaBinding mappings.scrollDocsDown ''
+        function()
+          require('cmp').mapping.scroll_docs(4)
+        end
+      '')
+    ];
+
+    vim.maps.command = mkMerge [
+      (mkSetLuaBinding mappings.complete ''
+        require('cmp').complete
+      '')
+      (mkSetLuaBinding mappings.close ''
+        require('cmp').mapping.close
+      '')
+      (mkSetLuaBinding mappings.scrollDocsUp ''
+        function()
+          require('cmp').mapping.scroll_docs(-4)
+        end
+      '')
+      (mkSetLuaBinding mappings.scrollDocsDown ''
+        function()
+          require('cmp').mapping.scroll_docs(4)
+        end
+      '')
+    ];
+
+    vim.maps.select = mkMerge [
+      (mkSetLuaBinding mappings.next ''
+        function()
+          local cmp = require('cmp')
+          local has_words_before = function()
+            local line, col = unpack(vim.api.nvim_win_get_cursor(0))
+            return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match("%s") == nil
+          end
+
+          local feedkey = function(key, mode)
+            vim.api.nvim_feedkeys(vim.api.nvim_replace_termcodes(key, true, true, true), mode, true)
+          end
+
+          if cmp.visible() then
+            cmp.select_next_item()
+          elseif vim.fn['vsnip#available'](1) == 1 then
+            feedkey("<Plug>(vsnip-expand-or-jump)", "")
+          elseif has_words_before() then
+            cmp.complete()
+          else
+            fallback()
+          end
+        end
+      '')
+      (mkSetLuaBinding mappings.previous ''
+        function()
+          local cmp = require('cmp')
+
+          local feedkey = function(key, mode)
+            vim.api.nvim_feedkeys(vim.api.nvim_replace_termcodes(key, true, true, true), mode, true)
+          end
+
+          if cmp.visible() then
+            cmp.select_prev_item()
+          elseif vim.fn['vsnip#available'](-1) == 1 then
+            feedkeys("<Plug>(vsnip-jump-prev)", "")
+          end
+        end
+      '')
+    ];
+
     vim.luaConfigRC.completion = mkIf (cfg.type == "nvim-cmp") (dagPlacement ''
       local nvim_cmp_menu_map = function(entry, vim_item)
         -- name for each source
@@ -59,16 +191,6 @@ in {
       ${optionalString lspkindEnabled ''
         lspkind_opts.before = ${cfg.formatting.format}
       ''}
-
-      local has_words_before = function()
-        local line, col = unpack(vim.api.nvim_win_get_cursor(0))
-        return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match("%s") == nil
-      end
-
-      local feedkey = function(key, mode)
-        vim.api.nvim_feedkeys(vim.api.nvim_replace_termcodes(key, true, true, true), mode, true)
-      end
-
       local cmp = require'cmp'
       cmp.setup({
         snippet = {
@@ -79,37 +201,6 @@ in {
         sources = {
           ${builtSources}
         },
-        mapping = {
-          ['<C-d>'] = cmp.mapping(cmp.mapping.scroll_docs(-4), { 'i', 'c' }),
-          ['<C-f>'] = cmp.mapping(cmp.mapping.scroll_docs(4), { 'i', 'c'}),
-          ['<C-Space>'] = cmp.mapping(cmp.mapping.complete(), { 'i', 'c'}),
-          ['<C-y>'] = cmp.config.disable,
-          ['<C-e>'] = cmp.mapping({
-            i = cmp.mapping.abort(),
-            c = cmp.mapping.close(),
-          }),
-          ['<CR>'] = cmp.mapping.confirm({
-            select = true,
-          }),
-          ['<Tab>'] = cmp.mapping(function (fallback)
-            if cmp.visible() then
-              cmp.select_next_item()
-            elseif vim.fn['vsnip#available'](1) == 1 then
-              feedkey("<Plug>(vsnip-expand-or-jump)", "")
-            elseif has_words_before() then
-              cmp.complete()
-            else
-              fallback()
-            end
-          end, { 'i', 's' }),
-          ['<S-Tab>'] = cmp.mapping(function (fallback)
-            if cmp.visible() then
-              cmp.select_prev_item()
-            elseif vim.fn['vsnip#available'](-1) == 1 then
-              feedkeys("<Plug>(vsnip-jump-prev)", "")
-            end
-          end, { 'i', 's' })
-        },
         completion = {
           completeopt = 'menu,menuone,noinsert',
         },

modules/completion/nvim-cmp/nvim-cmp.nix

@@ -1,34 +1,6 @@
-{
+{lib, ...}:
-  pkgs,
-  lib,
-  config,
-  ...
-}:
 with lib;
-with builtins; let
+with builtins; {
-  cfg = config.vim.autocomplete;
-  lspkindEnabled = config.vim.lsp.enable && config.vim.lsp.lspkind.enable;
-  builtSources =
-    concatMapStringsSep
-    "\n"
-    (n: "{ name = '${n}'},")
-    (attrNames cfg.sources);
-
-  builtMaps =
-    concatStringsSep
-    "\n"
-    (mapAttrsToList
-      (n: v:
-        if v == null
-        then ""
-        else "${n} = '${v}',")
-      cfg.sources);
-
-  dagPlacement =
-    if lspkindEnabled
-    then nvim.dag.entryAfter ["lspkind"]
-    else nvim.dag.entryAnywhere;
-in {
   options.vim = {
     autocomplete = {
       enable = mkOption {
@@ -37,6 +9,16 @@ in {
         description = "enable autocomplete";
       };
 
+      mappings = {
+        complete = mkMappingOption "Complete [nvim-cmp]" "<C-Space>";
+        confirm = mkMappingOption "Confirm [nvim-cmp]" "<CR>";
+        next = mkMappingOption "Next item [nvim-cmp]" "<Tab>";
+        previous = mkMappingOption "Previous item [nvim-cmp]" "<S-Tab>";
+        close = mkMappingOption "Close [nvim-cmp]" "<C-e>";
+        scrollDocsUp = mkMappingOption "Scroll docs up [nvim-cmp]" "<C-d>";
+        scrollDocsDown = mkMappingOption "Scroll docs down [nvim-cmp]" "<C-f>";
+      };
+
       type = mkOption {
         type = types.enum ["nvim-cmp"];
         default = "nvim-cmp";