From 79aee3b57d646b0424e622e27acd6329b265bc65 Mon Sep 17 00:00:00 2001
From: Joerg Thalheim <joerg@thalheim.io>
Date: Wed, 15 Nov 2017 20:32:41 +0000
Subject: [PATCH] rustcSrc: remove unrelated files

This package is used to provide semantic completion in tools like racer
and is equivalent to rust-src in rustup. This commit gets rid of a
number of files not required for completion.
---
 pkgs/development/compilers/rust/rust-src.nix | 11 +++++++++++
 pkgs/top-level/all-packages.nix              |  8 ++------
 2 files changed, 13 insertions(+), 6 deletions(-)
 create mode 100644 pkgs/development/compilers/rust/rust-src.nix

diff --git a/pkgs/development/compilers/rust/rust-src.nix b/pkgs/development/compilers/rust/rust-src.nix
new file mode 100644
index 00000000000..1b819a7f606
--- /dev/null
+++ b/pkgs/development/compilers/rust/rust-src.nix
@@ -0,0 +1,11 @@
+{ stdenv, rustc }:
+
+stdenv.mkDerivation {
+  name = "rust-src";
+  src = rustc.src;
+  phases = [ "unpackPhase" "installPhase" ];
+  installPhase = ''
+    mv src $out
+    rm -rf $out/{ci,doc,driver,etc,grammar,llvm,rt,rtstartup,rustllvm,test,tools,vendor}
+  '';
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 033e2df26e4..469f39dae0f 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -6239,13 +6239,9 @@ with pkgs;
         inherit rust;
       };
 
-      rustcSrc = stdenv.mkDerivation {
-        name = "rust-src";
-        src = rust.rustc.src;
-        phases = ["unpackPhase" "installPhase"];
-        installPhase = "mv src $out";
+      rustcSrc = callPackage ../development/compilers/rust/rust-src.nix {
+        inherit (rust) rustc;
       };
-
     });
 
   cargo-edit = callPackage ../tools/package-management/cargo-edit { };