From ea47b3e43ef933148e77fa5c5fced04c6e9c1da8 Mon Sep 17 00:00:00 2001
From: Hsiang-Cheng Yang <rick68@users.noreply.github.com>
Date: Mon, 6 Mar 2023 02:15:19 +0800
Subject: [PATCH] rust-overlay: support for `darwin`

---
 rust-overlay.nix | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/rust-overlay.nix b/rust-overlay.nix
index 3d043e0..3f275f6 100644
--- a/rust-overlay.nix
+++ b/rust-overlay.nix
@@ -282,6 +282,7 @@ let
           namesAndSrcs = getComponents pkgs.pkg name targets extensions targetExtensions stdenv fetchurl;
           components = installComponents stdenv namesAndSrcs;
           componentsOuts = builtins.map (comp: (super.lib.strings.escapeNixString (super.lib.getOutput "out" comp))) components;
+          sharedLibraryExtensions = stdenv.hostPlatform.extensions.sharedLibrary;
         in
           super.pkgs.symlinkJoin {
             name = name + "-" + version;
@@ -305,9 +306,9 @@ let
 
               # Here we copy the librustc_driver-*.so to our derivation.
               # The SYSROOT is determined based on the path of this library.
-              if test "" != $out/lib/librustc_driver-*.so &> /dev/null; then
-                RUSTC_DRIVER_PATH=$(realpath -e $out/lib/librustc_driver-*.so)
-                rm $out/lib/librustc_driver-*.so
+              if test "" != $out/lib/librustc_driver-*${sharedLibraryExtensions} &> /dev/null; then
+                RUSTC_DRIVER_PATH=$(realpath -e $out/lib/librustc_driver-*${sharedLibraryExtensions})
+                rm $out/lib/librustc_driver-*${sharedLibraryExtensions}
                 cp $RUSTC_DRIVER_PATH $out/lib/
               fi
             '';