This makes fragments that include other fragments work.
---
 cmd/gqlclientgen/main.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cmd/gqlclientgen/main.go b/cmd/gqlclientgen/main.go
index c3c5f3f..b7a68ac 100644
--- a/cmd/gqlclientgen/main.go
+++ b/cmd/gqlclientgen/main.go
@@ -232,6 +232,7 @@ func collectFragments(frags map[*ast.FragmentDefinition]struct{}, selSet ast.Sel
 			collectFragments(frags, sel.SelectionSet)
 		case *ast.FragmentSpread:
 			frags[sel.Definition] = struct{}{}
+			collectFragments(frags, sel.Definition.SelectionSet)
 		case *ast.InlineFragment:
 			collectFragments(frags, sel.SelectionSet)
 		default:
-- 
2.33.3

Pushed, thanks!