From b2748c6e99239ff6803ba0da76c362790c8be192 Mon Sep 17 00:00:00 2001
From: Lucas Franceschino <lucas.franceschino@inria.fr>
Date: Mon, 25 May 2020 19:07:38 +0200
Subject: Make `functionArgs` primitive accept primops

---
 src/libexpr/primops.cc | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/libexpr/primops.cc')

diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc
index 0a4236da4..5875457ac 100644
--- a/src/libexpr/primops.cc
+++ b/src/libexpr/primops.cc
@@ -1346,6 +1346,10 @@ static void prim_catAttrs(EvalState & state, const Pos & pos, Value * * args, Va
 static void prim_functionArgs(EvalState & state, const Pos & pos, Value * * args, Value & v)
 {
     state.forceValue(*args[0], pos);
+    if (args[0]->type == tPrimOpApp || args[0]->type == tPrimOp) {
+        state.mkAttrs(v, 0);
+        return;
+    }
     if (args[0]->type != tLambda)
         throw TypeError(format("'functionArgs' requires a function, at %1%") % pos);
 
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