nixpkgs/pkgs/development/tools/rust/rustup/0001-dynamically-patchelf-binaries.patch

From c21cc756b69a5f33c8a7758b746a816f40f55932 Mon Sep 17 00:00:00 2001
From: Leon Isenberg <ljli@users.noreply.github.com>
Date: Sat, 28 Oct 2017 17:58:17 +0200
Subject: [PATCH] nix customization: patchelf installed binaries

---
 src/rustup-dist/src/component/package.rs | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/src/rustup-dist/src/component/package.rs b/src/rustup-dist/src/component/package.rs
index 70c54dcd..f0318986 100644
--- a/src/rustup-dist/src/component/package.rs
+++ b/src/rustup-dist/src/component/package.rs
@@ -100,7 +100,10 @@ impl Package for DirectoryPackage {
             let src_path = root.join(&path);
 
             match &*part.0 {
-                "file" => builder.copy_file(path.clone(), &src_path)?,
+                "file" => {
+                    builder.copy_file(path.clone(), &src_path)?;
+                    nix_patchelf_if_needed(&target.prefix().path().join(path.clone()), &src_path)
+                }
                 "dir" => builder.copy_dir(path.clone(), &src_path)?,
                 _ => return Err(ErrorKind::CorruptComponent(name.to_owned()).into()),
             }
@@ -118,6 +121,22 @@ impl Package for DirectoryPackage {
     }
 }
 
+fn nix_patchelf_if_needed(dest_path: &Path, src_path: &Path) {
+    let is_bin = if let Some(p) = src_path.parent() {
+        p.ends_with("bin")
+    } else {
+        false
+    };
+
+    if is_bin {
+        let _ = ::std::process::Command::new("@patchelf@/bin/patchelf")
+            .arg("--set-interpreter")
+            .arg("@dynamicLinker@")
+            .arg(dest_path)
+            .output();
+    }
+}
+
 // On Unix we need to set up the file permissions correctly so
 // binaries are executable and directories readable. This shouldn't be
 // necessary: the source files *should* have the right permissions,
-- 
2.17.1