fix(gopls): resolve top-level go.mod as root_dir (#1399)

1 files changed, 26 insertions, 1 deletions

diff --git a/lua/lspconfig/gopls.lua b/lua/lspconfig/gopls.lua
index 0126b127..90c1fde0 100644
--- a/lua/lspconfig/gopls.lua
+++ b/lua/lspconfig/gopls.lua
@@ -6,7 +6,32 @@ configs.gopls = {
     cmd = { 'gopls' },
     filetypes = { 'go', 'gomod' },
     root_dir = function(fname)
-      return util.root_pattern 'go.work'(fname) or util.root_pattern('go.mod', '.git')(fname)
+      -- First, search for go.work
+      local primary_root = util.root_pattern 'go.work'(fname)
+      if primary_root then
+        return primary_root
+      end
+
+      -- Then, search up the filesystem for go.mod
+      local go_mod_hierarchy = {}
+      if primary_root then
+        return primary_root
+      end
+      for path in util.path.iterate_parents(fname) do
+        for _, p in ipairs(vim.fn.glob(util.path.join(path, 'go.mod'), true, true)) do
+          if util.path.exists(p) then
+            table.insert(go_mod_hierarchy, p)
+          end
+        end
+      end
+
+      -- Take the top level go.mod
+      if #go_mod_hierarchy > 0 then
+        return go_mod_hierarchy[#go_mod_hierarchy]
+      end
+
+      -- Fallback to the git root
+      return util.find_git_ancestor(fname)
     end,
   },
   docs = {