plugins/git: move to by-name

plugins/by-name/git-conflict/default.nix

@@ -0,0 +1,92 @@
+{
+  lib,
+  helpers,
+  pkgs,
+  ...
+}:
+with lib;
+helpers.neovim-plugin.mkNeovimPlugin {
+  name = "git-conflict";
+  originalName = "git-conflict.nvim";
+  package = "git-conflict-nvim";
+
+  maintainers = [ maintainers.GaetanLepage ];
+
+  extraOptions = {
+    gitPackage = lib.mkPackageOption pkgs "git" {
+      nullable = true;
+    };
+  };
+
+  extraConfig = cfg: { extraPackages = [ cfg.gitPackage ]; };
+
+  settingsOptions = {
+    default_mappings =
+      helpers.defaultNullOpts.mkNullable (with types; either bool (attrsOf str)) true
+        ''
+          This plugin offers default buffer local mappings inside conflicted files.
+          This is primarily because applying these mappings only to relevant buffers is impossible
+          through global mappings.
+
+          Set to `false` to disable mappings entirely.
+
+          Defaults (if left `true`):
+          ```nix
+            {
+              ours = "co";
+              theirs = "ct";
+              none = "c0";
+              both = "cb";
+              next = "[x";
+              prev = "]x";
+            }
+          ```
+        '';
+
+    default_commands = helpers.defaultNullOpts.mkBool true ''
+      Set to `false` to disable commands created by this plugin.
+    '';
+
+    disable_diagnostics = helpers.defaultNullOpts.mkBool false ''
+      This will disable the diagnostics in a buffer whilst it is conflicted.
+    '';
+
+    list_opener = helpers.defaultNullOpts.mkStr "copen" ''
+      Command or function to open the conflicts list.
+    '';
+
+    highlights = {
+      incoming = helpers.defaultNullOpts.mkStr "DiffAdd" ''
+        Which highlight group to use for incoming changes.
+      '';
+
+      current = helpers.defaultNullOpts.mkStr "DiffText" ''
+        Which highlight group to use for current changes.
+      '';
+
+      ancestor = helpers.mkNullOrStr ''
+        Which highlight group to use for ancestor.
+
+        Plugin default: `null`
+      '';
+    };
+  };
+
+  settingsExample = {
+    default_mappings = {
+      ours = "o";
+      theirs = "t";
+      none = "0";
+      both = "b";
+      next = "n";
+      prev = "p";
+    };
+    default_commands = true;
+    disable_diagnostics = false;
+    list_opener = "copen";
+    highlights = {
+      incoming = "DiffAdd";
+      current = "DiffText";
+    };
+  };
+}