From ed55513a4fc4f4f9d32007aa36ca75ab91e1be04 Mon Sep 17 00:00:00 2001
From: Gabriel Ebner <gebner@gebner.org>
Date: Fri, 28 Aug 2020 21:00:19 +0200
Subject: [PATCH] tree-sitter: fix build

---
 pkgs/development/tools/parsing/tree-sitter/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/tools/parsing/tree-sitter/default.nix b/pkgs/development/tools/parsing/tree-sitter/default.nix
index 51af3acdacdb..25faf4670503 100644
--- a/pkgs/development/tools/parsing/tree-sitter/default.nix
+++ b/pkgs/development/tools/parsing/tree-sitter/default.nix
@@ -55,6 +55,10 @@ in rustPlatform.buildRustPackage {
     # needed for the tests
     rm -rf test/fixtures/grammars
     ln -s ${grammars} test/fixtures/grammars
+
+    # These functions do not appear in the source code
+    sed -i /_ts_query_context/d lib/binding_web/exports.json
+    sed -i /___assert_fail/d lib/binding_web/exports.json
   '';
 
   # Compile web assembly with emscripten. The --debug flag prevents us from