feat(sql): disable sqls formatter and add sqlfluff

lua/astrocommunity/pack/sql/README.md

@@ -4,5 +4,7 @@ This plugin pack does the following:
 
 - Adds `sql` Treesitter parser
 - Adds `sqls` language server
-    - `go` must be in your `PATH` and executable.  
+    - `go` must be in your `PATH` and executable.
+    - formatting is disabled due to https://github.com/sqls-server/sqls/issues/149
 - Adds [sqls.nvim](https://github.com/nanotee/sqls.nvim) for language specific tooling
+- Adds `sqlfluff` for both formatting and linting (using the ANSI dialect)

lua/astrocommunity/pack/sql/init.lua

@@ -25,16 +25,71 @@ return {
       opts.ensure_installed = require("astrocore").list_insert_unique(opts.ensure_installed, { "sqls" })
     end,
   },
+  {
+    "jay-babu/mason-null-ls.nvim",
+    optional = true,
+    opts = function(_, opts)
+      opts.ensure_installed = require("astrocore").list_insert_unique(opts.ensure_installed, { "sqlfluff" })
+      opts.handlers = {
+        sqlfluff = function()
+          local null_ls = require "null-ls"
+          null_ls.register(null_ls.builtins.diagnostics.sqlfluff.with {
+            extra_args = { "--dialect", "ansi" },
+          })
+          null_ls.register(null_ls.builtins.formatting.sqlfluff.with {
+            extra_args = { "--dialect", "ansi" },
+          })
+        end,
+      }
+    end,
+  },
   {
     "WhoIsSethDaniel/mason-tool-installer.nvim",
     optional = true,
     opts = function(_, opts)
-      opts.ensure_installed = require("astrocore").list_insert_unique(opts.ensure_installed, { "sqls" })
+      opts.ensure_installed = require("astrocore").list_insert_unique(opts.ensure_installed, { "sqlfluff", "sqls" })
     end,
   },
+  {
+    "stevearc/conform.nvim",
+    optional = true,
+    opts = {
+      formatters_by_ft = {
+        sql = { "sqlfluff" },
+      },
+      formatters = {
+        sqlfluff = {
+          args = { "fix", "--dialect=ansi", "-" },
+          require_cwd = false,
+        },
+      },
+    },
+  },
+  {
+    "mfussenegger/nvim-lint",
+    optional = true,
+    opts = {
+      linters_by_ft = {
+        sql = { "sqlfluff" },
+      },
+    },
+  },
+  {
+    "AstroNvim/astrolsp",
+    opts = {
+      config = {
+        sqls = {
+          on_attach = function(client)
+            -- Disable formatting due to bugs: https://github.com/sqls-server/sqls/issues/149
+            client.server_capabilities.documentFormattingProvider = false
+            client.server_capabilities.documentRangeFormattingProvider = false
+          end,
+        },
+      },
+    },
+  },
   {
     "nanotee/sqls.nvim",
-    lazy = true,
     dependencies = {
       "AstroNvim/astrocore",
       opts = {