From ec2c8dfc2bd06c9001d7a1144228e143031737b9 Mon Sep 17 00:00:00 2001
From: TheSola10 <me@thesola.io>
Date: Sat, 15 May 2021 12:43:58 +0200
Subject: [PATCH] dduper: init at v0.04

---
 pkgs/tools/filesystems/dduper/default.nix | 50 +++++++++++++++++++++++
 pkgs/top-level/all-packages.nix           |  2 +
 2 files changed, 52 insertions(+)
 create mode 100644 pkgs/tools/filesystems/dduper/default.nix

diff --git a/pkgs/tools/filesystems/dduper/default.nix b/pkgs/tools/filesystems/dduper/default.nix
new file mode 100644
index 000000000000..5d91e8d0dcc6
--- /dev/null
+++ b/pkgs/tools/filesystems/dduper/default.nix
@@ -0,0 +1,50 @@
+{ lib, stdenv, fetchpatch, fetchFromGitHub, btrfs-progs, python3 }:
+
+let
+  btrfsProgsPatched = btrfs-progs.overrideAttrs (oldAttrs: {
+    patches = [
+      (fetchpatch {
+        name = "0001-Print-csum-for-a-given-file-on-stdout.patch";
+        url = "https://raw.githubusercontent.com/Lakshmipathi/dduper/8fab08e0f1901bf54411d25f1767b48c978074cb/patch/btrfs-progs-v5.9/0001-Print-csum-for-a-given-file-on-stdout.patch";
+        sha256 = "1li9lslrap70ibad8sij3bgpxn5lqs0j10l60bmy3c36y866q3g1";
+      })
+    ];
+  });
+  py3 = python3.withPackages (ps: with ps; [
+    prettytable
+    numpy
+  ]);
+in
+stdenv.mkDerivation rec {
+  pname = "dduper";
+  version = "0.04";
+
+  src = fetchFromGitHub {
+    owner = "lakshmipathi";
+    repo = "dduper";
+    rev = "v${version}";
+    sha256 = "09ncdawxkffldadqhfblqlkdl05q2qmywxyg6p61fv3dr2f2v5wm";
+  };
+
+  buildInputs = [
+    btrfsProgsPatched
+    py3
+  ];
+
+  patchPhase = ''
+    substituteInPlace ./dduper --replace "/usr/sbin/btrfs.static" "${btrfsProgsPatched}/bin/btrfs"
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+    install -m755 ./dduper $out/bin
+  '';
+
+  meta = with lib; {
+    description = "Fast block-level out-of-band BTRFS deduplication tool.";
+    homepage = "https://github.com/Lakshmipathi/dduper";
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ thesola10 ];
+    platforms = platforms.linux;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 11d313fc0ed8..9b7af2c42146 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -2288,6 +2288,8 @@ in
 
   ddate = callPackage ../tools/misc/ddate { };
 
+  dduper = callPackage ../tools/filesystems/dduper { };
+
   dedup = callPackage ../tools/backup/dedup { };
 
   dehydrated = callPackage ../tools/admin/dehydrated { };