lsp/null-ls: convert to new setupOpts format; get rid of prelude DAG

modules/plugins/lsp/null-ls/config.nix

@@ -4,13 +4,12 @@
   ...
 }: let
   inherit (lib.modules) mkIf mkMerge;
-  inherit (lib.attrsets) mapAttrs;
-  inherit (lib.trivial) boolToString;
-  inherit (lib.nvim.dag) entryAnywhere entryAfter entryBetween;
+  inherit (lib.nvim.lua) toLuaObject;
+  inherit (lib.nvim.dag) entryAfter;
 
-  cfg = config.vim.lsp;
+  cfg = config.vim.lsp.null-ls;
 in {
-  config = mkIf cfg.null-ls.enable (mkMerge [
+  config = mkIf cfg.enable (mkMerge [
     {
       vim = {
         startPlugins = [
@@ -18,35 +17,14 @@ in {
           "plenary-nvim"
         ];
 
-        # null-ls implies LSP already being set up
-        # since it will hook into LSPs to receive information
+        # null-ls implies that LSP is already being set up
+        # as it will hook into LSPs to receive information.
         lsp.enable = true;
 
-        pluginRC = {
-          # early setup for null-ls
-          null_ls-setup = entryAnywhere ''
-            local null_ls = require("null-ls")
-            local null_helpers = require("null-ls.helpers")
-            local null_methods = require("null-ls.methods")
-            local ls_sources = {}
-          '';
-
-          # null-ls setup
-          null_ls = entryAfter ["null_ls-setup" "lsp-setup"] ''
-            require('null-ls').setup({
-              debug = ${boolToString cfg.null-ls.debug},
-              diagnostics_format = "${cfg.null-ls.diagnostics_format}",
-              debounce = ${toString cfg.null-ls.debounce},
-              default_timeout = ${toString cfg.null-ls.default_timeout},
-              sources = ls_sources,
-              on_attach = default_on_attach
-            })
-          '';
-        };
+        pluginRC.null_ls = entryAfter ["lsp-setup"] ''
+          require('null-ls').setup(${toLuaObject cfg.setupOpts})
+        '';
       };
     }
-    {
-      vim.pluginRC = mapAttrs (_: v: (entryBetween ["null_ls"] ["null_ls-setup"] v)) cfg.null-ls.sources;
-    }
   ]);
 }

modules/plugins/lsp/null-ls/null-ls.nix

@@ -1,34 +1,87 @@
 {lib, ...}: let
-  inherit (lib.options) mkEnableOption mkOption;
-  inherit (lib.types) attrsOf str int;
+  inherit (lib.options) mkOption mkEnableOption;
+  inherit (lib.types) attrsOf str int nullOr;
+  inherit (lib.generators) mkLuaInline;
+  inherit (lib.nvim.types) luaInline mkPluginSetupOption;
+  inherit (lib.nvim.config) batchRenameOptions;
+
+  migrationTable = {
+    debug = "debug";
+    diagnostics_format = "diagnostics_format";
+    debounce = "debounce";
+    default_timeout = "default_timeout";
+    sources = "sources";
+  };
+
+  renamedSetupOpts =
+    batchRenameOptions
+    ["vim" "lsp" "null-ls"]
+    ["vim" "lsp" "null-ls" "setupOpts"]
+    migrationTable;
 in {
+  imports = renamedSetupOpts;
+
   options.vim.lsp.null-ls = {
-    enable = mkEnableOption "null-ls, also enabled automatically";
+    enable = mkEnableOption ''
+      null-ls, plugin to use Neovim as a language server to inject LSP diagnostics,
+      code actions, and more via Lua.
+    '';
 
-    debug = mkEnableOption "debugging information for `null-ls";
+    setupOpts = mkPluginSetupOption "null-ls" {
+      debug = mkEnableOption ''
+        debugging information for null-ls.
 
-    diagnostics_format = mkOption {
-      type = str;
-      default = "[#{m}] #{s} (#{c})";
-      description = "Diagnostic output format for null-ls";
-    };
+        Displays all possible log messages and writes them to the null-ls log,
+        which you can view with the command `:NullLsLog`
+      '';
 
-    debounce = mkOption {
-      type = int;
-      default = 250;
-      description = "Default debounce";
-    };
+      diagnostics_format = mkOption {
+        type = str;
+        default = "[#{m}] #{s} (#{c})";
+        description = ''
+          Sets the default format used for diagnostics. null-ls will replace th
+          e following special components with the relevant diagnostic information:
 
-    default_timeout = mkOption {
-      type = int;
-      default = 5000;
-      description = "Default timeout value, in milliseconds";
-    };
+          * `#{m}`: message
+          * `#{s}`: source name (defaults to null-ls if not specified)
+          * `#{c}`: code (if available)
+        '';
+      };
 
-    sources = mkOption {
-      description = "null-ls sources";
-      type = attrsOf str;
-      default = {};
+      debounce = mkOption {
+        type = int;
+        default = 250;
+        description = ''
+          Amount of time between the last change to a buffer and the next `textDocument/didChange` notification.
+        '';
+      };
+
+      default_timeout = mkOption {
+        type = int;
+        default = 5000;
+        description = ''
+          Amount of time (in milliseconds) after which built-in sources will time out.
+
+          :::{.note}
+          Built-in sources can define their own timeout period and users can override
+          the timeout period on a per-source basis
+          :::
+        '';
+      };
+
+      sources = mkOption {
+        type = nullOr (attrsOf luaInline);
+        default = null;
+        description = "Sources for null-ls to register";
+      };
+
+      on_attach = mkOption {
+        type = nullOr luaInline;
+        default = mkLuaInline "on_attach";
+        description = ''
+          Defines an on_attach callback to run whenever null-ls attaches to a buffer.
+        '';
+      };
     };
   };
 }