nixos/custom-pkgs/cargo-bisect-rustc/0001-patchelf.patch

diff --git a/src/toolchains.rs b/src/toolchains.rs
index 16e68a0..5ce1c50 100644
--- a/src/toolchains.rs
+++ b/src/toolchains.rs
@@ -34,6 +34,8 @@ pub(crate) enum InstallError {
     TempDir(#[source] io::Error),
     #[error("Could not move tempdir into destination: {0}")]
     Move(#[source] io::Error),
+    #[error("Could not patchelf")]
+    Patchelf(#[source] io::Error),
     #[error("Could not run subcommand {cmd}: {err}")]
     Subcommand {
         cmd: String,
@@ -208,7 +210,9 @@ impl Toolchain {
             })?;
         }
 
-        fs::rename(tmpdir.into_path(), dest).map_err(InstallError::Move)
+        fs::rename(tmpdir.into_path(), &dest).map_err(InstallError::Move)?;
+        nix_patchelf(dest).map_err(InstallError::Patchelf)?;
+        Ok(())
     }
 
     pub(crate) fn remove(&self, dl_params: &DownloadParams) -> io::Result<()> {
@@ -542,3 +546,46 @@ fn download_tarball(
         res => res,
     }
 }
+
+fn nix_patchelf(mut toolchain_path: PathBuf) -> Result<(), io::Error> {
+    toolchain_path.push("bin");
+
+    for entry in toolchain_path.read_dir()? {
+        let entry = entry?;
+        if !entry.file_type()?.is_file() {
+            continue;
+        }
+
+        eprintln!(
+            "info: you seem to be running NixOS. Attempting to patch {}",
+            entry.path().to_str().unwrap()
+        );
+        let _ = ::std::process::Command::new("@patchelf@/bin/patchelf")
+            .arg("--set-interpreter")
+            .arg("@dynamicLinker@")
+            .arg(entry.path())
+            .output();
+    }
+
+    toolchain_path.pop();
+    toolchain_path.push("lib");
+
+    for entry in toolchain_path.read_dir()? {
+        let entry = entry?;
+        if !entry.file_type()?.is_file() {
+            continue;
+        }
+
+        eprintln!(
+            "info: you seem to be running NixOS. Attempting to patch {}",
+            entry.path().to_str().unwrap()
+        );
+        let _ = ::std::process::Command::new("@patchelf@/bin/patchelf")
+            .arg("--set-rpath")
+            .arg("@libPath@")
+            .arg(entry.path())
+            .output();
+    }
+
+    Ok(())
+}