Add gitgutter

flake.nix

@@ -43,6 +43,8 @@
               enable = true;
               powerline = true;
             };
+
+            plugins.gitgutter.enable = true;
           };
         })
       ];

nixvim.nix

@@ -107,6 +107,13 @@ in
         description = "Extra contents for init.vim";
       };
 
+      extraPackages = mkOption {
+        type = types.listOf types.package;
+        default = [];
+        example = "[ pkgs.shfmt ]";
+        description = "Extra packages to be made available to neovim";
+      };
+
       configure = mkOption {
         type = types.attrsOf types.anything;
         default = { };
@@ -176,8 +183,12 @@ in
       withRuby = false;
     };
 
+    extraWrapperArgs = optionalString (cfg.extraPackages != [])
+      ''--prefix PATH : "${makeBinPath cfg.extraPackages}"'';
+
     wrappedNeovim = pkgs.wrapNeovimUnstable cfg.package (neovimConfig // {
-      wrapperArgs = lib.escapeShellArgs neovimConfig.wrapperArgs;
+      wrapperArgs = lib.escapeShellArgs neovimConfig.wrapperArgs + " "
+        + extraWrapperArgs;
     });
 
     mappings =

plugins/git/gitgutter.nix

@@ -49,10 +49,119 @@ in {
         default = false;
         description = "Make the background colors match the sign column";
       };
+
+      signs = mkOption {
+        type = let
+          signOption = desc: mkOption {
+            type = types.nullOr types.str;
+            default = null;
+            description = "Sign for ${desc}";
+          };
+        in types.submodule {
+          options = {
+            added = signOption "added lines";
+            modified = signOption "modified lines";
+            removed = signOption "removed lines";
+            modifiedAbove = signOption "modified line above";
+            removedFirstLine = signOption "a removed first line";
+            removedAboveAndBelow = signOption "lines removed above and  below";
+            modifiedRemoved = signOption "modified and removed lines";
+          };
+        };
+        default = {};
+        description = "Custom signs for the sign column";
+      };
+
+      diffRelativeToWorkingTree = mkOption {
+        type = types.bool;
+        default = false;
+        description = "Make diffs relative to the working tree instead of the index";
+      };
+
+      extraGitArgs = mkOption {
+        type = types.str;
+        default = "";
+        description = "Extra arguments to pass to git";
+      };
+
+      extraDiffArgs = mkOption {
+        type = types.str;
+        default = "";
+        description = "Extra arguments to pass to git diff";
+      };
+
+      grep = mkOption {
+        type = types.nullOr (types.oneOf [ types.submodule {
+          options = {
+            command = mkOption {
+              type = types.str;
+              description = "The command to use as a grep alternative";
+            };
+
+            package = mkOption {
+              type = types.package;
+              description = "The package of the grep alternative to use";
+            };
+          };
+        } types.str]);
+        default = null;
+        description = "A non-standard grep to use instead of the default";
+      };
+
+      enableByDefault = mkOption {
+        type = types.bool;
+        default = true;
+        description = "Enable gitgutter by default";
+      };
+
+      signsByDefault = mkOption {
+        type = types.bool;
+        default = true;
+        description = "Show signs by default";
+      };
+
+      highlightLines = mkOption {
+        type = types.bool;
+        default = true;
+        description = "Highlight lines by default";
+      };
+
+      highlightLineNumbers = mkOption {
+        type = types.bool;
+        default = true;
+        description = "Highlight line numbers by default";
+      };
+
+      runAsync = mkOption {
+        type = types.bool;
+        default = true;
+        description = "Disable this to run git diff syncrhonously instead of asynchronously";
+      };
+
+      previewWinFloating = mkOption {
+        type = types.bool;
+        default = false;
+        description = "Preview hunks on floating windows";
+      };
+
+      useLocationList = mkOption {
+        type = types.bool;
+        default = false;
+        description = "Load chunks into windows's location list instead of the quickfix list";
+      };
+
+      terminalReportFocus = mkOption {
+        type = types.bool;
+        default = true;
+        description = "Let the terminal report its focus status";
+      };
     };
   };
 
-  config = mkIf cfg.enable {
+  config = let
+    grepPackage = if builtins.isAttrs cfg.grep then [ cfg.grep.package ] else [];
+    grepCommand = if builtins.isAttrs cfg.grep then cfg.grep.command else cfg.grep;
+  in mkIf cfg.enable {
     programs.nixvim = {
       extraPlugins = [ pkgs.vimPlugins.gitgutter ];
 
@@ -61,6 +170,8 @@ in {
         foldtext = "gitgutter#fold#foldtext";
       };
 
+      extraPackages = [ pkgs.git ] ++ grepPackage;
+
       globals = {
         gitgutter_max_signs = mkIf (!isNull cfg.maxSigns) cfg.maxSigns;
         gitgutter_show_msg_on_hunk_jumping = mkIf (!cfg.showMessageOnHunkJumping) 0;
@@ -69,20 +180,29 @@ in {
         gitgutter_sign_priority = mkIf (!isNull cfg.signPriority) cfg.signPriority;
         gitgutter_set_sign_backgrounds = mkIf (cfg.matchBackgrounds) 1;
 
-        # TODO these config options:
-        # gitgutter_sign_*
-        # gitgutter_diff_relative_to
-        # gitgutter_diff_base
-        # gitgutter_git_args
-        # gitgutter_diff_args
-        # gitgutter_grep
-        # gitgutter_enabled
-        # gitgutter_signs
-        # gitgutter_highlight_lines
-        # gitgutter_highlight_linenrs
-        # gitgutter_async
-        # gitgutter_preview_win_floating
-        # gitgutter_use_location_list
+        gitgutter_sign_added = mkIf (!isNull cfg.signs.added) cfg.signs.added;
+        gitgutter_sign_modified = mkIf (!isNull cfg.signs.modified) cfg.signs.modified;
+        gitgutter_sign_removed = mkIf (!isNull cfg.signs.removed) cfg.signs.removed;
+        gitgutter_sign_removed_first_line = mkIf (!isNull cfg.signs.removedFirstLine) cfg.signs.removedFirstLine;
+        gitgutter_sign_removed_above_and_bellow = mkIf (!isNull cfg.signs.removedAboveAndBelow) cfg.signs.removedAboveAndBelow;
+        gitgutter_sign_modified_above = mkIf (!isNull cfg.signs.modifiedAbove) cfg.signs.modifiedAbove;
+
+        gitgutter_diff_relative_to = mkIf (cfg.diffRelativeToWorkingTree) "working_tree";
+        gitgutter_git_args = mkIf (cfg.extraGitArgs != "") cfg.extraGitArgs;
+        gitgutter_diff_args = mkIf (cfg.extraDiffArgs != "") cfg.extraDiffArgs;
+
+        gitgutter_grep = mkIf (!isNull grepCommand) grepCommand;
+
+        gitgutter_enabled = mkIf (!cfg.enableByDefault) 0;
+        gitgutter_signs = mkIf (!cfg.signsByDefault) 0;
+
+        gitgutter_highlight_lines = mkIf (!cfg.highlightLines) 0;
+        gitgutter_highlight_linenrs = mkIf (!cfg.highlightLineNumbers) 0;
+        gitgutter_async = mkIf (!cfg.runAsync) 0;
+        gitgutter_preview_win_floating = mkIf (cfg.previewWinFloating) 1;
+        gitgutter_use_location_list = mkIf (cfg.useLocationList) 1;
+
+        gitgutter_terminal_report_focus = mkIf (!cfg.terminalReportFocus) 0;
       };
     };
   };