feat(development/nixvim): gitsigns configurations

Finally made a fully featured gitsigns config integrating all its
features.

3 files changed, 100 insertions, 13 deletions

diff --git a/modules/development/nixvim/default.nix b/modules/development/nixvim/default.nix
index bf3d143..f1e038a 100644
--- a/modules/development/nixvim/default.nix
+++ b/modules/development/nixvim/default.nix
@@ -34,6 +34,7 @@
         clipboard = "unnamedplus";
         updatetime = 500;
       };
+      globals.mapleader = " ";
       clipboard.providers.xclip.enable = true;
       extraConfigLuaPre = with config.scheme.withHashtag; ''
         vim.opt.fillchars:append({ eob = " " })
diff --git a/modules/development/nixvim/plugins/gitsigns.nix b/modules/development/nixvim/plugins/gitsigns.nix
index 38ad85f..ccfb2c9 100644
--- a/modules/development/nixvim/plugins/gitsigns.nix
+++ b/modules/development/nixvim/plugins/gitsigns.nix
@@ -1,7 +1,103 @@
-# Git status in the sign column
+# Git integration: signs, blame, diffs and hunk operations
 { config, lib, ... }:
 {
-  config.programs.nixvim.plugins.gitsigns = lib.mkIf config.development.nixvim.enable {
-    enable = true;
+  config.programs.nixvim = lib.mkIf config.development.nixvim.enable {
+    plugins.gitsigns = {
+      enable = true;
+
+      settings = {
+        signs = {
+          add.text = "┃";
+          change.text = "┃";
+          delete.text = "▁";
+          topdelete.text = "▔";
+          changedelete.text = "~";
+          untracked.text = "┆";
+        };
+
+        numhl = true;
+        current_line_blame = false;
+        current_line_blame_formatter = "<author>, <author_time:%Y-%m-%d> - <summary>";
+
+        on_attach = ''
+          function(bufnr)
+            local gitsigns = require('gitsigns')
+            local function map(mode, lhs, rhs, desc)
+              vim.keymap.set(mode, lhs, rhs, { buffer = bufnr, silent = true, desc = desc })
+            end
+
+            -- Navigation
+            map('n', ']c', function() gitsigns.nav_hunk('next') end, 'Next hunk')
+            map('n', '[c', function() gitsigns.nav_hunk('prev') end, 'Previous hunk')
+            map('n', ']C', function() gitsigns.nav_hunk('last') end, 'Last hunk')
+            map('n', '[C', function() gitsigns.nav_hunk('first') end, 'First hunk')
+
+            -- Hunk actions
+            map('n', '<leader>gs', gitsigns.stage_hunk, 'Stage hunk')
+            map('v', '<leader>gs', function()
+              gitsigns.stage_hunk({ vim.fn.line('.'), vim.fn.line('v') })
+            end, 'Stage visual range hunk')
+            map('n', '<leader>gr', gitsigns.reset_hunk, 'Reset hunk')
+            map('v', '<leader>gr', function()
+              gitsigns.reset_hunk({ vim.fn.line('.'), vim.fn.line('v') })
+            end, 'Reset visual range hunk')
+            map('n', '<leader>gS', gitsigns.stage_buffer, 'Stage buffer')
+            map('n', '<leader>gR', gitsigns.reset_buffer, 'Reset buffer')
+            map('n', '<leader>gi', gitsigns.reset_buffer_index, 'Unstage buffer (reset index)')
+            map('n', '<leader>gu', gitsigns.undo_stage_hunk, 'Undo stage hunk')
+
+            -- Preview
+            map('n', '<leader>gp', gitsigns.preview_hunk, 'Preview hunk')
+            map('n', '<leader>gP', gitsigns.preview_hunk_inline, 'Preview hunk inline')
+
+            -- Blame
+            map('n', '<leader>gb', gitsigns.blame_line, 'Blame line')
+            map('n', '<leader>gB', function()
+              gitsigns.blame_line({ full = true })
+            end, 'Blame line (full)')
+
+            -- Diffs / base
+            map('n', '<leader>gd', gitsigns.diffthis, 'Diff this (index)')
+            map('n', '<leader>gD', function()
+              gitsigns.diffthis('~')
+            end, 'Diff this (HEAD)')
+            map('n', '<leader>gc', function()
+              gitsigns.change_base(nil, true)
+            end, 'Change diff base')
+
+            -- Quickfix / location list
+            map('n', '<leader>gq', gitsigns.setqflist, 'Hunks to quickfix')
+            map('n', '<leader>gQ', function()
+              gitsigns.setqflist('all')
+            end, 'Repo hunks to quickfix')
+            map('n', '<leader>gl', gitsigns.setloclist, 'Hunks to location list')
+
+            -- Toggles
+            map('n', '<leader>gts', gitsigns.toggle_signs, 'Toggle signs')
+            map('n', '<leader>gtl', gitsigns.toggle_linehl, 'Toggle line highlight')
+            map('n', '<leader>gtn', gitsigns.toggle_numhl, 'Toggle number highlight')
+            map('n', '<leader>gtw', gitsigns.toggle_word_diff, 'Toggle word diff')
+            map('n', '<leader>gtb', gitsigns.toggle_current_line_blame, 'Toggle current line blame')
+            map('n', '<leader>gtd', gitsigns.toggle_deleted, 'Toggle deleted lines')
+
+            -- Misc
+            map('n', '<leader>gF', gitsigns.refresh, 'Refresh gitsigns')
+
+            -- Text object
+            map({ 'o', 'x' }, 'ih', gitsigns.select_hunk, 'Select hunk text object')
+          end
+        '';
+      };
+    };
+
+    highlight = with config.scheme.withHashtag; {
+      GitSignsAdd.fg = base0B;
+      GitSignsChange.fg = base0A;
+      GitSignsDelete.fg = base08;
+      GitSignsTopdelete.fg = base08;
+      GitSignsChangedelete.fg = base0A;
+      GitSignsUntracked.fg = base0C;
+      GitSignsCurrentLineBlame.fg = base04;
+    };
   };
 }
diff --git a/modules/development/nixvim/plugins/telescope.nix b/modules/development/nixvim/plugins/telescope.nix
index 8f06ec9..505a3eb 100644
--- a/modules/development/nixvim/plugins/telescope.nix
+++ b/modules/development/nixvim/plugins/telescope.nix
@@ -56,16 +56,6 @@
         options.desc = "Document symbols";
       };
 
-      # Git
-      "<leader>gc" = {
-        action = "git_commits";
-        options.desc = "Git commits";
-      };
-      "<leader>gb" = {
-        action = "git_branches";
-        options.desc = "Git branches";
-      };
-
       # Misc
       "<leader>fh" = {
         action = "help_tags";