Enable querying lang-server formatting capabilities (#1078)

7 files changed, 531 insertions, 426 deletions

diff --git a/lua/core/galaxyline.lua b/lua/core/galaxyline.lua
index cf7d35d0..2aae0242 100644
--- a/lua/core/galaxyline.lua
+++ b/lua/core/galaxyline.lua
@@ -6,6 +6,8 @@ if not status_ok then
   return
 end
 
+local utils = require "utils"
+
 -- NOTE: if someone defines colors but doesn't have them then this will break
 local palette_status_ok, colors = pcall(require, lvim.colorscheme .. ".palette")
 if not palette_status_ok then
@@ -200,36 +202,22 @@ table.insert(gls.right, {
   },
 })
 
--- TODO: this function doesn't need to be this complicated
 local function get_attached_provider_name(msg)
   msg = msg or "LSP Inactive"
-  local buf_ft = vim.bo.filetype
   local buf_clients = vim.lsp.buf_get_clients()
   if next(buf_clients) == nil then
     return msg
   end
-
-  local utils = require "utils"
-  local config = require("null-ls.config").get()
-  local builtins = require "null-ls.builtins"
-  -- concat all the builtin formatters and linters from null-ls
-  local all_things = builtins.formatting
-  for k, v in pairs(builtins.diagnostics) do
-    all_things[k] = v
-  end
-
-  -- if we open multiple filetypes in the same session
-  -- null-ls will register multiple formatter/linters
-  -- but only use the ones that support vim.bo.filetype
-  -- so we need to filter them
+  local buf_ft = vim.bo.filetype
   local buf_client_names = {}
+  local null_ls_providers = require("lsp.null-ls").requested_providers
   for _, client in pairs(buf_clients) do
     if client.name == "null-ls" then
-      -- for every registered formatter/linter in the current buffer
-      for _, v in pairs(config._names) do
-        -- show only the ones that are being used for the current filetype
-        if utils.has_value(all_things[v].filetypes, buf_ft) then
-          table.insert(buf_client_names, v)
+      for _, provider in pairs(null_ls_providers) do
+        if vim.tbl_contains(provider.filetypes, buf_ft) then
+          if not vim.tbl_contains(buf_client_names, provider.name) then
+            table.insert(buf_client_names, provider.name)
+          end
         end
       end
     else
diff --git a/lua/default-config.lua b/lua/default-config.lua
index 25c6dcef..41636757 100644
--- a/lua/default-config.lua
+++ b/lua/default-config.lua
@@ -47,6 +47,7 @@ lvim = {
     popup_border = "single",
     default_keybinds = true,
     on_attach_callback = nil,
+    on_init_callback = nil,
   },
 
   plugins = {
@@ -54,11 +55,13 @@ lvim = {
   },
 
   autocommands = {},
+  debug = false,
 }
 
 local schemas = nil
-local common_on_attach = require("lsp.service").common_on_attach
-local common_capabilities = require("lsp.service").common_capabilities()
+local common_on_attach = require("lsp").common_on_attach
+local common_capabilities = require("lsp").common_capabilities()
+local common_on_init = require("lsp").common_on_init
 local status_ok, jsonls_settings = pcall(require, "nlspsettings.jsonls")
 if status_ok then
   schemas = jsonls_settings.get_default_schemas()
@@ -67,9 +70,12 @@ end
 -- TODO move all of this into lang specific files, only require when using
 lvim.lang = {
   asm = {
-    formatter = {
-      exe = "asmfmt",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be asmfmt
+        exe = "",
+        args = {},
+      },
     },
     linters = {},
     lsp = {
@@ -78,9 +84,12 @@ lvim.lang = {
     },
   },
   beancount = {
-    formatter = {
-      exe = "bean_format",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be bean_format
+        exe = "",
+        args = {},
+      },
     },
     linters = {},
     lsp = {
@@ -88,19 +97,21 @@ lvim.lang = {
       setup = {
         cmd = { "beancount-langserver" },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   c = {
-    formatter = {
-      exe = "clang_format",
-      args = {},
-      stdin = true,
-    },
-    linters = {
-      "clangtidy",
+    formatters = {
+      {
+        -- @usage can be clang_format or uncrustify
+        exe = "",
+        args = {},
+        stdin = true,
+      },
     },
+    linters = {},
     lsp = {
       provider = "clangd",
       setup = {
@@ -113,20 +124,21 @@ lvim.lang = {
           "--clang-tidy-checks=-*,llvm-*,clang-analyzer-*",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   cpp = {
-    formatter = {
-      exe = "clang_format",
-      args = {},
-      stdin = true,
-    },
-    linters = {
-      "cppcheck",
-      "clangtidy",
+    formatters = {
+      {
+        -- @usage can be clang_format or uncrustify
+        exe = "",
+        args = {},
+        stdin = true,
+      },
     },
+    linters = {},
     lsp = {
       provider = "clangd",
       setup = {
@@ -139,14 +151,18 @@ lvim.lang = {
           "--clang-tidy-checks=-*,llvm-*,clang-analyzer-*",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   crystal = {
-    formatter = {
-      exe = "crystal_format",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be crystal_format
+        exe = "",
+        args = {},
+      },
     },
     linters = {},
     lsp = {
@@ -154,14 +170,18 @@ lvim.lang = {
       setup = {
         cmd = { "crystalline" },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   cs = {
-    formatter = {
-      exe = "clang_format",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be clang_format or uncrustify
+        exe = "",
+        args = {},
+      },
     },
     linters = {},
     lsp = {
@@ -174,14 +194,18 @@ lvim.lang = {
           tostring(vim.fn.getpid()),
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   cmake = {
-    formatter = {
-      exe = "cmake_format",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be cmake_format
+        exe = "",
+        args = {},
+      },
     },
     linters = {},
     lsp = {
@@ -192,15 +216,16 @@ lvim.lang = {
           "--stdio",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   clojure = {
-    formatter = {
+    formatters = { {
       exe = "",
       args = {},
-    },
+    } },
     linters = {},
     lsp = {
       provider = "clojure_lsp",
@@ -210,14 +235,18 @@ lvim.lang = {
           "--stdio",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   css = {
-    formatter = {
-      exe = "prettier",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be prettier or prettierd
+        exe = "",
+        args = {},
+      },
     },
     linters = {},
     lsp = {
@@ -229,14 +258,18 @@ lvim.lang = {
           "--stdio",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   d = {
-    formatter = {
-      exe = "dfmt",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be dfmt
+        exe = "",
+        args = {},
+      },
     },
     linters = {},
     lsp = {
@@ -244,15 +277,19 @@ lvim.lang = {
       setup = {
         cmd = { "serve-d" },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   dart = {
-    formatter = {
-      exe = "dart_format",
-      args = {},
-      stdin = true,
+    formatters = {
+      {
+        -- @usage can be dart_format
+        exe = "",
+        args = {},
+        stdin = true,
+      },
     },
     linters = {},
     lsp = {
@@ -264,14 +301,18 @@ lvim.lang = {
           "--lsp",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   docker = {
-    formatter = {
-      exe = "",
-      args = {},
+    formatters = {
+      {
+        exe = "",
+        args = {},
+      },
+      -- @usage can be {"hadolint"}
     },
     linters = {},
     lsp = {
@@ -282,15 +323,19 @@ lvim.lang = {
           "--stdio",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   elixir = {
-    formatter = {
-      exe = "mix",
-      args = {},
-      stdin = true,
+    formatters = {
+      {
+        -- @usage can be mix
+        exe = "",
+        args = {},
+        stdin = true,
+      },
     },
     linters = {},
     lsp = {
@@ -300,15 +345,19 @@ lvim.lang = {
           DATA_PATH .. "/lspinstall/elixir/elixir-ls/language_server.sh",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   elm = {
-    formatter = {
-      exe = "elm_format",
-      args = {},
-      stdin = true,
+    formatters = {
+      {
+        -- @usage can be elm_format
+        exe = "",
+        args = {},
+        stdin = true,
+      },
     },
     linters = {},
     lsp = {
@@ -318,6 +367,7 @@ lvim.lang = {
           DATA_PATH .. "/lspinstall/elm/node_modules/.bin/elm-language-server",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         init_options = {
           elmAnalyseTrigger = "change",
           elmFormatPath = DATA_PATH .. "/lspinstall/elm/node_modules/.bin/elm-format",
@@ -328,9 +378,12 @@ lvim.lang = {
     },
   },
   erlang = {
-    formatter = {
-      exe = "erlfmt",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be erlfmt
+        exe = "",
+        args = {},
+      },
     },
     linters = {},
     lsp = {
@@ -340,35 +393,40 @@ lvim.lang = {
           "erlang_ls",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   emmet = { active = false },
   fish = {
-    formatter = {
-      exe = "fish_indent",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be fish_indent
+        exe = "",
+        args = {},
+      },
     },
     linters = {},
     lsp = {
       provider = "",
       setup = {
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   go = {
-    formatter = {
-      exe = "gofmt",
-      args = {},
-      stdin = true,
-    },
-    linters = {
-      "golangcilint",
-      "revive",
+    formatters = {
+      {
+        -- @usage can be gofmt or goimports or gofumpt
+        exe = "",
+        args = {},
+        stdin = true,
+      },
     },
+    linters = {},
     lsp = {
       provider = "gopls",
       setup = {
@@ -376,15 +434,16 @@ lvim.lang = {
           DATA_PATH .. "/lspinstall/go/gopls",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   graphql = {
-    formatter = {
+    formatters = { {
       exe = "",
       args = {},
-    },
+    } },
     linters = {},
     lsp = {
       provider = "graphql",
@@ -396,20 +455,20 @@ lvim.lang = {
           "stream",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   html = {
-    formatter = {
-      exe = "prettier",
-      args = {},
-    },
-    linters = {
-      "tidy",
-      -- https://docs.errata.ai/vale/scoping#html
-      "vale",
+    formatters = {
+      {
+        -- @usage can be prettier or prettierd
+        exe = "",
+        args = {},
+      },
     },
+    linters = {},
     lsp = {
       provider = "html",
       setup = {
@@ -419,14 +478,18 @@ lvim.lang = {
           "--stdio",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   java = {
-    formatter = {
-      exe = "prettier",
-      args = { "--stdin-filepath", vim.api.nvim_buf_get_name(0) },
+    formatters = {
+      {
+        -- @usage can be clang_format or uncrustify
+        exe = "",
+        args = {},
+      },
     },
     linters = {},
     lsp = {
@@ -434,15 +497,19 @@ lvim.lang = {
       setup = {
         cmd = { DATA_PATH .. "/lspinstall/java/jdtls.sh" },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   json = {
-    formatter = {
-      exe = "json_tool",
-      args = {},
-      stdin = true,
+    formatters = {
+      {
+        -- @usage can be json_tool or prettier or prettierd
+        exe = "",
+        args = {},
+        stdin = true,
+      },
     },
     linters = {},
     lsp = {
@@ -454,6 +521,7 @@ lvim.lang = {
           "--stdio",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
         settings = {
           json = {
@@ -477,10 +545,10 @@ lvim.lang = {
     },
   },
   julia = {
-    formatter = {
+    formatters = { {
       exe = "",
       args = {},
-    },
+    } },
     linters = {},
     lsp = {
       provider = "julials",
@@ -493,15 +561,16 @@ lvim.lang = {
           CONFIG_PATH .. "/utils/julia/run.jl",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   kotlin = {
-    formatter = {
+    formatters = { {
       exe = "",
       args = {},
-    },
+    } },
     linters = {},
     lsp = {
       provider = "kotlin_language_server",
@@ -510,6 +579,7 @@ lvim.lang = {
           DATA_PATH .. "/lspinstall/kotlin/server/bin/kotlin-language-server",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         root_dir = function(fname)
           local util = require "lspconfig/util"
 
@@ -530,11 +600,14 @@ lvim.lang = {
     },
   },
   lua = {
-    formatter = {
-      exe = "stylua",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be stylua or lua_format
+        exe = "stylua",
+        args = {},
+      },
     },
-    linters = { "luacheck" },
+    linters = {},
     lsp = {
       provider = "sumneko_lua",
       setup = {
@@ -543,7 +616,9 @@ lvim.lang = {
           "-E",
           DATA_PATH .. "/lspinstall/lua/main.lua",
         },
+        capabilities = common_capabilities,
         on_attach = common_on_attach,
+        on_init = common_on_init,
         settings = {
           Lua = {
             runtime = {
@@ -572,20 +647,26 @@ lvim.lang = {
     },
   },
   nginx = {
-    formatter = {
-      exe = "nginx_beautifier",
-      args = {
-        provider = "",
-        setup = {},
+    formatters = {
+      {
+        -- @usage can be nginx_beautifier
+        exe = "",
+        args = {
+          provider = "",
+          setup = {},
+        },
       },
     },
     linters = {},
     lsp = {},
   },
   perl = {
-    formatter = {
-      exe = "perltidy",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be perltidy
+        exe = "",
+        args = {},
+      },
     },
     linters = {},
     lsp = {
@@ -594,9 +675,12 @@ lvim.lang = {
     },
   },
   sql = {
-    formatter = {
-      exe = "sqlformat",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be sqlformat
+        exe = "",
+        args = {},
+      },
     },
     linters = {},
     lsp = {
@@ -607,9 +691,12 @@ lvim.lang = {
     },
   },
   php = {
-    formatter = {
-      exe = "phpcbf",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be phpcbf
+        exe = "",
+        args = {},
+      },
     },
     linters = {},
     lsp = {
@@ -620,6 +707,7 @@ lvim.lang = {
           "--stdio",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         filetypes = { "php", "phtml" },
         settings = {
           intelephense = {
@@ -632,28 +720,30 @@ lvim.lang = {
     },
   },
   puppet = {
-    formatter = {
+    formatters = { {
       exe = "",
       args = {},
-    },
+    } },
     linters = {},
     lsp = {
       provider = "puppet",
       setup = {
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   javascript = {
-    -- @usage can be prettier or eslint
-    formatter = {
-      exe = "prettier",
-      args = {},
-    },
-    linters = {
-      "eslint",
+    -- @usage can be prettier or prettier_d_slim or prettierd
+    formatters = {
+      {
+        exe = "",
+        args = {},
+      },
     },
+    -- @usage can be {"eslint"} or {"eslint_d"}
+    linters = {},
     lsp = {
       provider = "tsserver",
       setup = {
@@ -663,19 +753,21 @@ lvim.lang = {
           "--stdio",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   javascriptreact = {
-    -- @usage can be prettier or eslint
-    formatter = {
-      exe = "prettier",
-      args = {},
-    },
-    linters = {
-      "eslint",
+    formatters = {
+      {
+        -- @usage can be prettier or prettier_d_slim or prettierd
+        exe = "",
+        args = {},
+      },
     },
+    -- @usage can be {"eslint"} or {"eslint_d"}
+    linters = {},
     lsp = {
       provider = "tsserver",
       setup = {
@@ -685,21 +777,20 @@ lvim.lang = {
           "--stdio",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   python = {
-    -- @usage can be flake8 or yapf
-    formatter = {
-      exe = "black",
-      args = {},
-    },
-    linters = {
-      "flake8",
-      "pylint",
-      "mypy",
+    formatters = {
+      {
+        -- @usage can be black or yapf or isort
+        exe = "",
+        args = {},
+      },
     },
+    linters = {},
     lsp = {
       provider = "pyright",
       setup = {
@@ -708,6 +799,7 @@ lvim.lang = {
           "--stdio",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
@@ -715,9 +807,12 @@ lvim.lang = {
   -- R -e 'install.packages("formatR",repos = "http://cran.us.r-project.org")'
   -- R -e 'install.packages("readr",repos = "http://cran.us.r-project.org")'
   r = {
-    formatter = {
-      exe = "format_r",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be format_r
+        exe = "",
+        args = {},
+      },
     },
     linters = {},
     lsp = {
@@ -730,16 +825,20 @@ lvim.lang = {
           "languageserver::run()",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   ruby = {
-    formatter = {
-      exe = "rufo",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be rufo
+        exe = "",
+        args = {},
+      },
     },
-    linters = { "ruby" },
+    linters = {},
     lsp = {
       provider = "solargraph",
       setup = {
@@ -748,14 +847,18 @@ lvim.lang = {
           "stdio",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   rust = {
-    formatter = {
-      exe = "rustfmt",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be rustfmt
+        exe = "",
+        args = {},
+      },
     },
     linters = {},
     lsp = {
@@ -765,32 +868,38 @@ lvim.lang = {
           DATA_PATH .. "/lspinstall/rust/rust-analyzer",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   scala = {
-    formatter = {
-      exe = "scalafmt",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be scalafmt
+        exe = "",
+        args = {},
+      },
     },
     linters = { "" },
     lsp = {
       provider = "metals",
       setup = {
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   sh = {
-    -- @usage can be 'shfmt'
-    formatter = {
-      exe = "shfmt",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be shfmt
+        exe = "",
+        args = {},
+      },
     },
-    -- @usage can be 'shellcheck'
-    linters = { "shellcheck" },
+    linters = {},
     lsp = {
       provider = "bashls",
       setup = {
@@ -799,15 +908,16 @@ lvim.lang = {
           "start",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   svelte = {
-    formatter = {
+    formatters = { {
       exe = "",
       args = {},
-    },
+    } },
     linters = {},
     lsp = {
       provider = "svelte",
@@ -817,14 +927,18 @@ lvim.lang = {
           "--stdio",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   swift = {
-    formatter = {
-      exe = "swiftformat",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be swiftformat
+        exe = "",
+        args = {},
+      },
     },
     linters = {},
     lsp = {
@@ -835,6 +949,7 @@ lvim.lang = {
           "sourcekit-lsp",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
@@ -852,9 +967,12 @@ lvim.lang = {
     },
   },
   terraform = {
-    formatter = {
-      exe = "terraform_fmt",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be terraform_fmt
+        exe = "",
+        args = {},
+      },
     },
     linters = {},
     lsp = {
@@ -865,35 +983,41 @@ lvim.lang = {
           "serve",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   tex = {
-    formatter = {
-      exe = "latexindent",
-      args = {},
-      stdin = false,
+    formatters = {
+      {
+        exe = "",
+        args = {},
+        stdin = false,
+      },
+      -- @usage can be chktex or vale
     },
-    linters = { "chktex" },
+    linters = {},
     lsp = {
       provider = "texlab",
       setup = {
         cmd = { DATA_PATH .. "/lspinstall/latex/texlab" },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   typescript = {
-    -- @usage can be prettier or eslint
-    formatter = {
-      exe = "prettier",
-      args = {},
-    },
-    linters = {
-      "eslint",
+    formatters = {
+      {
+        -- @usage can be prettier or prettierd or prettier_d_slim
+        exe = "",
+        args = {},
+      },
+      -- @usage can be {"eslint"} or {"eslint_d"}
     },
+    linters = {},
     lsp = {
       provider = "tsserver",
       setup = {
@@ -903,19 +1027,21 @@ lvim.lang = {
           "--stdio",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   typescriptreact = {
-    -- @usage can be prettier or eslint
-    formatter = {
-      exe = "prettier",
-      args = {},
-    },
-    linters = {
-      "eslint",
+    formatters = {
+      {
+        -- @usage can be prettier or prettierd or prettier_d_slim
+        exe = "",
+        args = {},
+      },
     },
+    -- @usage can be {"eslint"} or {"eslint_d"}
+    linters = {},
     lsp = {
       provider = "tsserver",
       setup = {
@@ -925,15 +1051,19 @@ lvim.lang = {
           "--stdio",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   vim = {
-    formatter = {
-      exe = "",
-      args = {},
+    formatters = {
+      {
+        exe = "",
+        args = {},
+      },
     },
+    -- @usage can be {"vint"}
     linters = { "" },
     lsp = {
       provider = "vimls",
@@ -943,15 +1073,20 @@ lvim.lang = {
           "--stdio",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   vue = {
-    formatter = {
-      exe = "prettier",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be prettier or prettierd or prettier_d_slim
+        exe = "",
+        args = {},
+      },
     },
+    -- @usage can be {"eslint"} or {"eslint_d"}
     linters = {},
     lsp = {
       provider = "vuels",
@@ -960,14 +1095,18 @@ lvim.lang = {
           DATA_PATH .. "/lspinstall/vue/node_modules/.bin/vls",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   yaml = {
-    formatter = {
-      exe = "prettier",
-      args = {},
+    formatters = {
+      {
+        -- @usage can be prettier or prettierd
+        exe = "",
+        args = {},
+      },
     },
     linters = {},
     lsp = {
@@ -978,16 +1117,17 @@ lvim.lang = {
           "--stdio",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
   },
   zig = {
-    formatter = {
+    formatters = { {
       exe = "",
       args = {},
       stdin = false,
-    },
+    } },
     linters = {},
     lsp = {
       provider = "zls",
@@ -996,6 +1136,7 @@ lvim.lang = {
           "zls",
         },
         on_attach = common_on_attach,
+        on_init = common_on_init,
         capabilities = common_capabilities,
       },
     },
diff --git a/lua/lsp/init.lua b/lua/lsp/init.lua
index 62c42fd8..67007e81 100644
--- a/lua/lsp/init.lua
+++ b/lua/lsp/init.lua
@@ -1,55 +1,79 @@
-local utils = require "utils"
-local service = require "lsp.service"
-local null_ls = require "lsp.null-ls"
 local M = {}
-
+local u = require "utils"
 function M.config()
   require("lsp.kind").setup()
   require("lsp.handlers").setup()
   require("lsp.signs").setup()
-  require("lsp.keybinds").setup()
 end
 
-function M.setup(lang)
-  local lang_server = lvim.lang[lang].lsp
-  local provider = lang_server.provider
-  if utils.check_lsp_client_active(provider) then
-    return
+local function lsp_highlight_document(client)
+  if lvim.lsp.document_highlight == false then
+    return -- we don't need further
+  end
+  -- Set autocommands conditional on server_capabilities
+  if client.resolved_capabilities.document_highlight then
+    vim.api.nvim_exec(
+      [[
+      hi LspReferenceRead cterm=bold ctermbg=red guibg=#464646
+      hi LspReferenceText cterm=bold ctermbg=red guibg=#464646
+      hi LspReferenceWrite cterm=bold ctermbg=red guibg=#464646
+      augroup lsp_document_highlight
+        autocmd! * <buffer>
+        autocmd CursorHold <buffer> lua vim.lsp.buf.document_highlight()
+        autocmd CursorMoved <buffer> lua vim.lsp.buf.clear_references()
+      augroup END
+    ]],
+      false
+    )
   end
+end
 
-  local overrides = lvim.lsp.override
+local function formatter_handler(client)
+  local buffer_filetype = vim.bo.filetype
+  local ext_provider = lvim.lang[buffer_filetype].formatter.exe
 
-  if utils.is_table(overrides) then
-    if utils.has_value(overrides, lang) then
-      return
-    end
+  if ext_provider then
+    client.resolved_capabilities.document_formatting = false
+    u.lvim_log(
+      string.format("Overriding [%s] formatting if exists, Using provider [%s] instead", client.name, ext_provider)
+    )
   end
+end
 
-  if utils.is_string(overrides) then
-    if overrides == lang then
-      return
-    end
+function M.common_capabilities()
+  local capabilities = vim.lsp.protocol.make_client_capabilities()
+  capabilities.textDocument.completion.completionItem.snippetSupport = true
+  capabilities.textDocument.completion.completionItem.resolveSupport = {
+    properties = {
+      "documentation",
+      "detail",
+      "additionalTextEdits",
+    },
+  }
+  return capabilities
+end
+
+function M.common_on_init(client, bufnr)
+  if lvim.lsp.on_init_callback then
+    lvim.lsp.on_init_callback(client, bufnr)
+    return
   end
-  local sources = null_ls.setup(lang)
-
-  for _, source in pairs(sources) do
-    local method = source.method
-    local format_method = "NULL_LS_FORMATTING"
-
-    if utils.is_table(method) then
-      if utils.has_value(method, format_method) then
-        lang_server.setup.on_attach = service.no_formatter_on_attach
-      end
-    end
-
-    if utils.is_string(method) then
-      if method == format_method then
-        lang_server.setup.on_attach = service.no_formatter_on_attach
-      end
-    end
+  formatter_handler(client)
+end
+
+function M.common_on_attach(client, bufnr)
+  if lvim.lsp.on_attach_callback then
+    lvim.lsp.on_attach_callback(client, bufnr)
   end
+  lsp_highlight_document(client)
+  require("lsp.keybinds").setup()
+  require("lsp.null-ls").setup(vim.bo.filetype)
+end
 
-  if provider == "" or provider == nil then
+function M.setup(lang)
+  local lang_server = lvim.lang[lang].lsp
+  local provider = lang_server.provider
+  if require("utils").check_lsp_client_active(provider) then
     return
   end
 
diff --git a/lua/lsp/keybinds.lua b/lua/lsp/keybinds.lua
index 820ebce9..cc0d4ec9 100644
--- a/lua/lsp/keybinds.lua
+++ b/lua/lsp/keybinds.lua
@@ -1,5 +1,70 @@
 local M = {}
 
+-- Taken from https://www.reddit.com/r/neovim/comments/gyb077/nvimlsp_peek_defination_javascript_ttserver/
+function M.preview_location(location, context, before_context)
+  -- location may be LocationLink or Location (more useful for the former)
+  context = context or 15
+  before_context = before_context or 0
+  local uri = location.targetUri or location.uri
+  if uri == nil then
+    return
+  end
+  local bufnr = vim.uri_to_bufnr(uri)
+  if not vim.api.nvim_buf_is_loaded(bufnr) then
+    vim.fn.bufload(bufnr)
+  end
+
+  local range = location.targetRange or location.range
+  local contents = vim.api.nvim_buf_get_lines(
+    bufnr,
+    range.start.line - before_context,
+    range["end"].line + 1 + context,
+    false
+  )
+  local filetype = vim.api.nvim_buf_get_option(bufnr, "filetype")
+  return vim.lsp.util.open_floating_preview(contents, filetype, { border = lvim.lsp.popup_border })
+end
+
+function M.preview_location_callback(_, method, result)
+  local context = 15
+  if result == nil or vim.tbl_isempty(result) then
+    print("No location found: " .. method)
+    return nil
+  end
+  if vim.tbl_islist(result) then
+    M.floating_buf, M.floating_win = M.preview_location(result[1], context)
+  else
+    M.floating_buf, M.floating_win = M.preview_location(result, context)
+  end
+end
+
+function M.PeekDefinition()
+  if vim.tbl_contains(vim.api.nvim_list_wins(), M.floating_win) then
+    vim.api.nvim_set_current_win(M.floating_win)
+  else
+    local params = vim.lsp.util.make_position_params()
+    return vim.lsp.buf_request(0, "textDocument/definition", params, M.preview_location_callback)
+  end
+end
+
+function M.PeekTypeDefinition()
+  if vim.tbl_contains(vim.api.nvim_list_wins(), M.floating_win) then
+    vim.api.nvim_set_current_win(M.floating_win)
+  else
+    local params = vim.lsp.util.make_position_params()
+    return vim.lsp.buf_request(0, "textDocument/typeDefinition", params, M.preview_location_callback)
+  end
+end
+
+function M.PeekImplementation()
+  if vim.tbl_contains(vim.api.nvim_list_wins(), M.floating_win) then
+    vim.api.nvim_set_current_win(M.floating_win)
+  else
+    local params = vim.lsp.util.make_position_params()
+    return vim.lsp.buf_request(0, "textDocument/implementation", params, M.preview_location_callback)
+  end
+end
+
 function M.setup()
   if lvim.lsp.default_keybinds then
     vim.cmd "nnoremap <silent> gd <cmd>lua vim.lsp.buf.definition()<CR>"
@@ -13,7 +78,7 @@ function M.setup()
       { noremap = true, silent = true }
     )
 
-    vim.cmd "nnoremap <silent> gp <cmd>lua require'lsp.service'.PeekDefinition()<CR>"
+    vim.cmd "nnoremap <silent> gp <cmd>lua require'lsp.keybinds'.PeekDefinition()<CR>"
     vim.cmd "nnoremap <silent> K :lua vim.lsp.buf.hover()<CR>"
     vim.cmd "nnoremap <silent> <C-p> :lua vim.lsp.diagnostic.goto_prev({popup_opts = {border = lvim.lsp.popup_border}})<CR>"
     vim.cmd "nnoremap <silent> <C-n> :lua vim.lsp.diagnostic.goto_next({popup_opts = {border = lvim.lsp.popup_border}})<CR>"
diff --git a/lua/lsp/null-ls.lua b/lua/lsp/null-ls.lua
index 6a31de26..d2222602 100644
--- a/lua/lsp/null-ls.lua
+++ b/lua/lsp/null-ls.lua
@@ -1,76 +1,79 @@
 local M = {}
+local u = require "utils"
+local null_ls = require "null-ls"
 
-local _, null_ls = pcall(require, "null-ls")
-local utils = require "utils"
-local sources = {}
+local nodejs_local_providers = { "prettier", "prettierd", "prettier_d_slim", "eslint_d", "eslint" }
 
-local local_executables = { "prettier", "prettierd", "prettier_d_slim", "eslint_d", "eslint" }
+M.requested_providers = {}
 
-local find_local_exe = function(exe)
-  vim.cmd "let root_dir = FindRootDirectory()"
-  local root_dir = vim.api.nvim_get_var "root_dir"
-  local local_exe = root_dir .. "/node_modules/.bin/" .. exe
-  return local_exe
+local function is_nodejs_provider(provider)
+  for _, local_provider in ipairs(nodejs_local_providers) do
+    if local_provider == provider.exe then
+      return true
+    end
+  end
+  return false
 end
 
--- https://github.com/jose-elias-alvarez/null-ls.nvim/blob/9b8458bd1648e84169a7e8638091ba15c2f20fc0/doc/BUILTINS.md#eslint
-local get_normalized_exe = function(exe, type)
-  if type == "diagnostics" and exe == "eslint_d" then
-    return "eslint"
+local function is_provider_found(provider)
+  -- special case: fallback to "eslint"
+  -- https://github.com/jose-elias-alvarez/null-ls.nvim/blob/9b8458bd1648e84169a7e8638091ba15c2f20fc0/doc/BUILTINS.md#eslint
+  provider._opts.command = provider._opts.command == "eslint_d" and "eslint" or provider._opts.command
+
+  local retval = { is_local = false, path = nil }
+  if vim.fn.executable(provider._opts.command) == 1 then
+    return false, provider._opts.command
   end
-  return exe
+  if is_nodejs_provider(provider) then
+    vim.cmd "let root_dir = FindRootDirectory()"
+    local root_dir = vim.api.nvim_get_var "root_dir"
+    local local_provider_command = root_dir .. "/node_modules/.bin/" .. provider._opts.command
+    if vim.fn.executable(local_provider_command) == 1 then
+      retval.is_local = true
+      retval.path = local_provider_command
+    end
+  end
+  return retval.is_local, retval.path
 end
 
-local function setup_ls(exe, type)
-  if utils.has_value(local_executables, exe) then
-    local normalized_exe = get_normalized_exe(exe, type)
-    local smart_executable = null_ls.builtins[type][normalized_exe]
-    local local_executable = find_local_exe(exe)
-    if vim.fn.executable(local_executable) == 1 then
-      smart_executable._opts.command = local_executable
-      table.insert(sources, smart_executable)
-    else
-      if vim.fn.executable(exe) == 1 then
-        smart_executable._opts.command = exe
-        table.insert(sources, smart_executable)
-      end
-    end
-  else
-    if null_ls.builtins[type][exe] and vim.fn.executable(null_ls.builtins[type][exe]._opts.command) then
-      table.insert(sources, null_ls.builtins[type][exe])
-    end
+local function validate_provider(provider)
+  local is_local, provider_path = is_provider_found(provider)
+  if not provider_path then
+    u.lvim_log(string.format("Unable to find the path for: [%s]", provider))
+    return false
   end
-  null_ls.register { sources = sources }
+  if is_local then
+    provider._opts.command = provider_path
+  end
+  return true
 end
 
 -- TODO: for linters and formatters with spaces and '-' replace with '_'
-local function setup(filetype, type)
-  local executables = nil
-  if type == "diagnostics" then
-    executables = lvim.lang[filetype].linters
+function M.setup(filetype)
+  for _, formatter in pairs(lvim.lang[filetype].formatters) do
+    local builtin_formatter = null_ls.builtins.formatting[formatter.exe]
+    -- FIXME: why doesn't this work?
+    -- builtin_formatter._opts.args = formatter.args or builtin_formatter._opts.args
+    -- builtin_formatter._opts.to_stdin = formatter.stdin or builtin_formatter._opts.to_stdin
+    table.insert(M.requested_providers, builtin_formatter)
+    u.lvim_log(string.format("Using format provider: [%s]", formatter.exe))
   end
-  if type == "formatting" then
-    executables = lvim.lang[filetype].formatter.exe
+
+  for _, linter in pairs(lvim.lang[filetype].linters) do
+    local builtin_diagnoser = null_ls.builtins.diagnostics[linter.exe]
+    -- FIXME: why doesn't this work?
+    -- builtin_diagnoser._opts.args = linter.args or builtin_diagnoser._opts.args
+    -- builtin_diagnoser._opts.to_stdin = linter.stdin or builtin_diagnoser._opts.to_stdin
+    table.insert(M.requested_providers, builtin_diagnoser)
+    u.lvim_log(string.format("Using linter provider: [%s]", linter.exe))
   end
 
-  if utils.is_table(executables) then
-    for _, exe in pairs(executables) do
-      if exe ~= "" then
-        setup_ls(exe, type)
-      end
+  for idx, provider in pairs(M.requested_providers) do
+    if not validate_provider(provider) then
+      table.remove(M.requested_providers, idx)
     end
   end
-  if utils.is_string(executables) and executables ~= "" then
-    setup_ls(executables, type)
-  end
-end
-
--- TODO: return the formatter if one was registered, then turn off the builtin formatter
-function M.setup(filetype)
-  setup(filetype, "formatting")
-  setup(filetype, "diagnostics")
-  lvim.sources = sources
-  return sources
+  null_ls.register { sources = M.requested_providers }
 end
 
 return M
diff --git a/lua/lsp/service.lua b/lua/lsp/service.lua
deleted file mode 100644
index 0c49bacd..00000000
--- a/lua/lsp/service.lua
+++ /dev/null
@@ -1,122 +0,0 @@
-local M = {}
-
-local function lsp_highlight_document(client)
-  if lvim.lsp.document_highlight == false then
-    return -- we don't need further
-  end
-  -- Set autocommands conditional on server_capabilities
-  if client.resolved_capabilities.document_highlight then
-    vim.api.nvim_exec(
-      [[
-      hi LspReferenceRead cterm=bold ctermbg=red guibg=#464646
-      hi LspReferenceText cterm=bold ctermbg=red guibg=#464646
-      hi LspReferenceWrite cterm=bold ctermbg=red guibg=#464646
-      augroup lsp_document_highlight
-        autocmd! * <buffer>
-        autocmd CursorHold <buffer> lua vim.lsp.buf.document_highlight()
-        autocmd CursorMoved <buffer> lua vim.lsp.buf.clear_references()
-      augroup END
-    ]],
-      false
-    )
-  end
-end
-
-function M.lsp_highlight_document(client)
-  lsp_highlight_document(client)
-end
-
--- Taken from https://www.reddit.com/r/neovim/comments/gyb077/nvimlsp_peek_defination_javascript_ttserver/
-function M.preview_location(location, context, before_context)
-  -- location may be LocationLink or Location (more useful for the former)
-  context = context or 15
-  before_context = before_context or 0
-  local uri = location.targetUri or location.uri
-  if uri == nil then
-    return
-  end
-  local bufnr = vim.uri_to_bufnr(uri)
-  if not vim.api.nvim_buf_is_loaded(bufnr) then
-    vim.fn.bufload(bufnr)
-  end
-
-  local range = location.targetRange or location.range
-  local contents = vim.api.nvim_buf_get_lines(
-    bufnr,
-    range.start.line - before_context,
-    range["end"].line + 1 + context,
-    false
-  )
-  local filetype = vim.api.nvim_buf_get_option(bufnr, "filetype")
-  return vim.lsp.util.open_floating_preview(contents, filetype, { border = lvim.lsp.popup_border })
-end
-
-function M.preview_location_callback(_, method, result)
-  local context = 15
-  if result == nil or vim.tbl_isempty(result) then
-    print("No location found: " .. method)
-    return nil
-  end
-  if vim.tbl_islist(result) then
-    M.floating_buf, M.floating_win = M.preview_location(result[1], context)
-  else
-    M.floating_buf, M.floating_win = M.preview_location(result, context)
-  end
-end
-
-function M.PeekDefinition()
-  if vim.tbl_contains(vim.api.nvim_list_wins(), M.floating_win) then
-    vim.api.nvim_set_current_win(M.floating_win)
-  else
-    local params = vim.lsp.util.make_position_params()
-    return vim.lsp.buf_request(0, "textDocument/definition", params, M.preview_location_callback)
-  end
-end
-
-function M.PeekTypeDefinition()
-  if vim.tbl_contains(vim.api.nvim_list_wins(), M.floating_win) then
-    vim.api.nvim_set_current_win(M.floating_win)
-  else
-    local params = vim.lsp.util.make_position_params()
-    return vim.lsp.buf_request(0, "textDocument/typeDefinition", params, M.preview_location_callback)
-  end
-end
-
-function M.PeekImplementation()
-  if vim.tbl_contains(vim.api.nvim_list_wins(), M.floating_win) then
-    vim.api.nvim_set_current_win(M.floating_win)
-  else
-    local params = vim.lsp.util.make_position_params()
-    return vim.lsp.buf_request(0, "textDocument/implementation", params, M.preview_location_callback)
-  end
-end
-
-function M.common_on_attach(client, bufnr)
-  if lvim.lsp.on_attach_callback then
-    lvim.lsp.on_attach_callback(client, bufnr)
-  end
-  lsp_highlight_document(client)
-end
-
-function M.no_formatter_on_attach(client, bufnr)
-  if lvim.lsp.on_attach_callback then
-    lvim.lsp.on_attach_callback(client, bufnr)
-  end
-  lsp_highlight_document(client)
-  client.resolved_capabilities.document_formatting = false
-end
-
-function M.common_capabilities()
-  local capabilities = vim.lsp.protocol.make_client_capabilities()
-  capabilities.textDocument.completion.completionItem.snippetSupport = true
-  capabilities.textDocument.completion.completionItem.resolveSupport = {
-    properties = {
-      "documentation",
-      "detail",
-      "additionalTextEdits",
-    },
-  }
-  return capabilities
-end
-
-return M
diff --git a/lua/utils/init.lua b/lua/utils/init.lua
index fe1e09aa..a41bfc10 100644
--- a/lua/utils/init.lua
+++ b/lua/utils/init.lua
@@ -162,6 +162,12 @@ function utils.gsub_args(args)
   return args
 end
 
+function utils.lvim_log(msg)
+  if lvim.debug then
+    vim.notify(msg, vim.log.levels.DEBUG)
+  end
+end
+
 return utils
 
 -- TODO: find a new home for these autocommands