Merge pull request #309449 from motiejus/btrfs-auto-snapshot

pkgs/by-name/bt/btrfs-auto-snapshot/package.nix

@@ -0,0 +1,75 @@
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  makeWrapper,
+  coreutils,
+  getopt,
+  gnugrep,
+  gnused,
+  gawk,
+  btrfs-progs,
+  syslogSupport ? true,
+  util-linux ? null,
+}:
+assert syslogSupport -> util-linux != null;
+stdenv.mkDerivation rec {
+  version = "2.0.4";
+  pname = "btrfs-auto-snapshot";
+
+  src = fetchFromGitHub {
+    owner = "hunleyd";
+    repo = pname;
+    rev = "v${version}";
+    hash = "sha256-QpuwkGaYAkpu5hYyb360Mr5tHsZc2LzMlKtpS8CyyhI=";
+  };
+
+  dontBuild = true;
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  installPhase = ''
+    install -Dm755 btrfs-auto-snapshot $out/bin/btrfs-auto-snapshot
+  '';
+
+  wrapperPath =
+    with lib;
+    makeBinPath (
+      [
+        coreutils
+        getopt
+        gnugrep
+        gnused
+        gawk
+        btrfs-progs
+      ]
+      ++ optional syslogSupport util-linux
+    );
+
+  postFixup = ''
+    wrapProgram $out/bin/btrfs-auto-snapshot \
+      --prefix PATH : "${wrapperPath}"
+  '';
+
+  meta = with lib; {
+    description = "BTRFS Automatic Snapshot Service for Linux";
+    homepage = "https://github.com/hunleyd/btrfs-auto-snapshot";
+    license = licenses.gpl2;
+    mainProgram = "btrfs-auto-snapshot";
+    maintainers = with maintainers; [ motiejus ];
+    platforms = platforms.linux;
+
+    longDescription = ''
+      btrfs-auto-snapshot is a Bash script designed to bring as much of the
+      functionality of the wonderful ZFS snapshot tool zfs-auto-snapshot to
+      BTRFS as possible. Designed to run from cron (using
+      /etc/cron.{daily,hourly,weekly}) it automatically creates a snapshot of
+      the specified BTRFS filesystem (or, optionally, all of them) and then
+      automatically purges the oldest snapshots of that type (hourly, daily, et
+      al) based on a user-defined retention policy.
+
+      Snapshots are stored in a '.btrfs' directory at the root of the BTRFS
+      filesystem being snapped and are read-only by default.
+    '';
+  };
+}