fix: register null-ls providers per filetype (#1709)

lua/lsp/null-ls/formatters.lua

@@ -23,7 +23,7 @@ function M.list_available(filetype)
   return formatters
 end
 
-function M.list_configured(formatter_configs)
+function M.list_configured(formatter_configs, filetype)
   local formatters, errors = {}, {}
 
   for _, fmt_config in ipairs(formatter_configs) do
@@ -39,7 +39,11 @@ function M.list_configured(formatter_configs)
         errors[fmt_config.exe] = {} -- Add data here when necessary
       else
         Log:debug("Using formatter: " .. formatter_cmd)
-        formatters[fmt_config.exe] = formatter.with { command = formatter_cmd, extra_args = fmt_config.args }
+        formatters[fmt_config.exe] = formatter.with {
+          command = formatter_cmd,
+          extra_args = fmt_config.args,
+          filetypes = { filetype },
+        }
       end
     end
   end
@@ -52,9 +56,8 @@ function M.setup(formatter_configs, filetype)
     return
   end
 
-  local formatters_by_ft = {}
-  formatters_by_ft[filetype] = M.list_configured(formatter_configs)
-  null_ls.register { sources = formatters_by_ft[filetype].supported }
+  local formatters_by_ft = M.list_configured(formatter_configs, filetype)
+  null_ls.register { sources = formatters_by_ft.supported }
 end
 
 return M

lua/lsp/null-ls/init.lua

@@ -13,12 +13,12 @@ function M:setup()
 
   null_ls.config()
   require("lspconfig")["null-ls"].setup(lvim.lsp.null_ls.setup)
-  for _, filetype in pairs(lvim.lang) do
-    if filetype.formatters then
-      formatters.setup(filetype.formatters, filetype)
+  for filetype, config in pairs(lvim.lang) do
+    if not vim.tbl_isempty(config.formatters) then
+      formatters.setup(config.formatters, filetype)
     end
-    if filetype.linters then
-      linters.setup(filetype.linters, filetype)
+    if not vim.tbl_isempty(config.linters) then
+      linters.setup(config.linters, filetype)
     end
   end
 end

lua/lsp/null-ls/linters.lua

@@ -23,7 +23,7 @@ function M.list_available(filetype)
   return linters
 end
 
-function M.list_configured(linter_configs)
+function M.list_configured(linter_configs, filetype)
   local linters, errors = {}, {}
 
   for _, lnt_config in pairs(linter_configs) do
@@ -39,7 +39,11 @@ function M.list_configured(linter_configs)
         errors[lnt_config.exe] = {} -- Add data here when necessary
       else
         Log:debug("Using linter: " .. linter_cmd)
-        linters[lnt_config.exe] = linter.with { command = linter_cmd, extra_args = lnt_config.args }
+        linters[lnt_config.exe] = linter.with {
+          command = linter_cmd,
+          extra_args = lnt_config.args,
+          filetypes = { filetype },
+        }
       end
     end
   end
@@ -52,9 +56,8 @@ function M.setup(linter_configs, filetype)
     return
   end
 
-  local linters_by_ft = {}
-  linters_by_ft[filetype] = M.list_configured(linter_configs)
-  null_ls.register { sources = linters_by_ft[filetype].supported }
+  local linters_by_ft = M.list_configured(linter_configs, filetype)
+  null_ls.register { sources = linters_by_ft.supported }
 end
 
 return M