new: add cokeline

modules/plugins/tabline/cokeline/cokeline.nix

@@ -0,0 +1,17 @@
+{lib, ...}: let
+  inherit (lib.options) mkEnableOption;
+  inherit (lib.nvim.binds) mkMappingOption;
+in {
+  options.vim.tabline.cokeline = {
+    enable = mkEnableOption "cokeline";
+
+    mappings = {
+      cycleNext = mkMappingOption "Next buffer" "<Tab>";
+      cyclePrevious = mkMappingOption "Previous buffer" "<S-Tab>";
+      pick = mkMappingOption "Pick buffer" "<leader>bc";
+      switchNext = mkMappingOption "Switch with next buffer" "<leader>bmn";
+      switchPrevious = mkMappingOption "Move previous buffer" "<leader>bmp";
+      closeByLetter = mkMappingOption "Close buffer by letter" "<leader>bd";
+    };
+  };
+}

modules/plugins/tabline/cokeline/config.nix

@@ -0,0 +1,95 @@
+{
+  config,
+  lib,
+  ...
+}: let
+  inherit (lib.modules) mkIf mkMerge;
+  inherit (lib.nvim.binds) mkBinding pushDownDefault;
+  inherit (lib.nvim.dag) entryAnywhere;
+
+  cfg = config.vim.tabline.cokeline;
+
+  self = import ./cokeline.nix {inherit lib;};
+  inherit (self.options.vim.tabline.cokeline) mappings;
+in {
+  config = mkIf cfg.enable {
+    vim = {
+      startPlugins = [
+        (assert config.vim.visuals.nvimWebDevicons.enable; "nvim-cokeline")
+        "bufdelete-nvim"
+      ];
+
+      maps.normal = mkMerge [
+        (mkBinding cfg.mappings.cycleNext "<Plug>(cokeline-focus-next)" mappings.cycleNext.description)
+        (mkBinding cfg.mappings.cyclePrevious "<Plug>(cokeline-focus-prev)" mappings.cyclePrevious.description)
+        (mkBinding cfg.mappings.switchNext "<Plug>(cokeline-switch-next)" mappings.switchNext.description)
+        (mkBinding cfg.mappings.switchPrevious "<Plug>(cokeline-switch-prev)" mappings.switchPrevious.description)
+        # this does not work
+        # (mkBinding cfg.mappings.pick "<Plug>(cokeline-pick-focus)" mappings.pick.description)
+        # (mkLuaBinding cfg.mappings.pick "function() require('cokeline.mappings').pick(\"focus\") end" mappings.pick.description)
+        # (mkBinding cfg.mappings.closeByLetter "<Plug>(cokeline-pick-close)" mappings.closeByLetter.description)
+      ];
+
+      binds.whichKey.register = pushDownDefault {
+        "<leader>b" = "+Buffer";
+        "<leader>bm" = "BufferLineMove";
+      };
+
+      luaConfigRC = {
+        cokeline = entryAnywhere ''
+          local get_hex = require('cokeline.hlgroups').get_hl_attr
+
+          require('cokeline').setup({
+            default_hl = {
+              fg = function(buffer)
+                return
+                  buffer.is_focused
+                  and get_hex('Normal', 'fg')
+                   or get_hex('Comment', 'fg')
+              end,
+              bg = get_hex('ColorColumn', 'bg'),
+            },
+
+            components = {
+              {
+                text = ' ',
+                bg = get_hex('Normal', 'bg'),
+              },
+              {
+                text = '',
+                fg = get_hex('ColorColumn', 'bg'),
+                bg = get_hex('Normal', 'bg'),
+              },
+              {
+                text = function(buffer)
+                  return buffer.devicon.icon
+                end,
+                fg = function(buffer)
+                  return buffer.devicon.color
+                end,
+              },
+              {
+                text = ' ',
+              },
+              {
+                text = function(buffer) return buffer.filename .. '  ' end,
+                style = function(buffer)
+                  return buffer.is_focused and 'bold' or nil
+                end,
+              },
+              {
+                text = '',
+                delete_buffer_on_left_click = true,
+              },
+              {
+                text = '',
+                fg = get_hex('ColorColumn', 'bg'),
+                bg = get_hex('Normal', 'bg'),
+              },
+            },
+          })
+        '';
+      };
+    };
+  };
+}

modules/plugins/tabline/cokeline/default.nix

@@ -0,0 +1,6 @@
+{
+  imports = [
+    ./cokeline.nix
+    ./config.nix
+  ];
+}

modules/plugins/tabline/default.nix

@@ -1,5 +1,6 @@
 {
   imports = [
     ./nvim-bufferline
+    ./cokeline
   ];
 }

modules/plugins/tabline/nvim-bufferline/config.nix

@@ -32,7 +32,6 @@ in {
         maps.normal = mkMerge [
           (mkLuaBinding cfg.mappings.closeCurrent "require(\"bufdelete\").bufdelete" mappings.closeCurrent.description)
           (mkBinding cfg.mappings.cycleNext ":BufferLineCycleNext<CR>" mappings.cycleNext.description)
-          (mkBinding cfg.mappings.cycleNext ":BufferLineCycleNext<CR>" mappings.cycleNext.description)
           (mkBinding cfg.mappings.cyclePrevious ":BufferLineCyclePrev<CR>" mappings.cyclePrevious.description)
           (mkBinding cfg.mappings.pick ":BufferLinePick<CR>" mappings.pick.description)
           (mkBinding cfg.mappings.sortByExtension ":BufferLineSortByExtension<CR>" mappings.sortByExtension.description)