From b3218a102fbfce135e780bb273998b97ebbaaf19 Mon Sep 17 00:00:00 2001
From: Sergei Trofimovich <slyich@gmail.com>
Date: Sat, 12 Aug 2023 09:59:44 +0100
Subject: [PATCH] duperemove: encode absolute path to `lscpu`

Without the change `duperemove` fails to run in parallel
if `PATH` is missing `lscpu` as:

    $ PATH= ./result/bin/duperemove /tmp
    sh: line 1: lscpu: No such file or directory
    Gathering file list...
    No dedupe candidates found.

Noticed when wrote a minimal systemd timer for `duperemove`.
---
 pkgs/tools/filesystems/duperemove/default.nix | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pkgs/tools/filesystems/duperemove/default.nix b/pkgs/tools/filesystems/duperemove/default.nix
index 98e652a05f9d..2bdcc811db0f 100644
--- a/pkgs/tools/filesystems/duperemove/default.nix
+++ b/pkgs/tools/filesystems/duperemove/default.nix
@@ -1,5 +1,6 @@
 { lib, stdenv, fetchFromGitHub, libgcrypt
-, pkg-config, glib, linuxHeaders ? stdenv.cc.libc.linuxHeaders, sqlite }:
+, pkg-config, glib, linuxHeaders ? stdenv.cc.libc.linuxHeaders, sqlite
+, util-linux }:
 
 stdenv.mkDerivation rec {
   pname = "duperemove";
@@ -12,6 +13,11 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-WjUM52IqMDvBzeGHo7p4JcvMO5iPWPVOr8GJ3RSsnUs=";
   };
 
+  postPatch = ''
+    substituteInPlace util.c --replace \
+      "lscpu" "${lib.getBin util-linux}/bin/lscpu"
+  '';
+
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ libgcrypt glib linuxHeaders sqlite ];