From 741ed30e7738656c93b0d0dcb2be45623c8d3c64 Mon Sep 17 00:00:00 2001
From: nicoo <nicoo@mur.at>
Date: Tue, 29 Aug 2023 20:09:47 +0000
Subject: [PATCH] fetchDebianPatch: init

---
 pkgs/build-support/fetchdebianpatch/default.nix | 13 +++++++++++++
 pkgs/top-level/all-packages.nix                 |  2 ++
 2 files changed, 15 insertions(+)
 create mode 100644 pkgs/build-support/fetchdebianpatch/default.nix

diff --git a/pkgs/build-support/fetchdebianpatch/default.nix b/pkgs/build-support/fetchdebianpatch/default.nix
new file mode 100644
index 000000000000..c1230484f82b
--- /dev/null
+++ b/pkgs/build-support/fetchdebianpatch/default.nix
@@ -0,0 +1,13 @@
+{ lib, fetchpatch }:
+
+lib.makeOverridable (
+  { pname, version, debianRevision ? null, name, hash, area ? "main" }:
+  let versionString =
+    if debianRevision == null then version else "${version}-${debianRevision}";
+  in fetchpatch {
+    url =
+      "https://sources.debian.org/data/${area}/${builtins.substring 0 1 pname}/"
+      + "${pname}/${versionString}/debian/patches/${name}.patch";
+    inherit hash;
+  }
+)
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index f5575dccdfa4..e53b1fe1c65b 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1173,6 +1173,8 @@ with pkgs;
       tests = pkgs.tests.fetchzip;
     };
 
+  fetchDebianPatch = callPackage ../build-support/fetchdebianpatch { };
+
   fetchCrate = callPackage ../build-support/rust/fetchcrate.nix { };
 
   fetchFromGitea = callPackage ../build-support/fetchgitea { };