diff --git a/artiq/fetch-llvm-clang.nix b/artiq/fetch-llvm-clang.nix
deleted file mode 100644
index 686aef9..0000000
--- a/artiq/fetch-llvm-clang.nix
+++ /dev/null
@@ -1,22 +0,0 @@
-{ runCommand, fetchFromGitHub, git }:
-
-let
-llvm-src = fetchFromGitHub {
-  rev = "527aa86b578da5dfb9cf4510b71f0f46a11249f7";
-  owner = "m-labs";
-  repo = "llvm-or1k";
-  sha256 = "0lmcg9xj66pf4mb6racipw67vm8kwm84dl861hyqnywd61kvhrwa";
-};
-clang-src = fetchFromGitHub {
-  rev = "9e996136d52ed506ed8f57ef8b13b0f0f735e6a3";
-  owner = "m-labs";
-  repo = "clang-or1k";
-  sha256 = "0w5f450i76y162aswi2c7jip8x3arzljaxhbqp8qfdffm0rdbjp4";
-};
-in
-runCommand "llvm_or1k_src" {}''
-mkdir -p $out
-mkdir -p $out/tools/clang
-cp -r ${llvm-src}/* $out/
-cp -r ${clang-src}/* $out/tools/clang
-''