mhddfs: rip

contributes to #526161 , it has not been tested if the package builds with fuse3

pkgs/by-name/mh/mhddfs/fix-format-security-error.patch

@@ -1,12 +0,0 @@
---- mhddfs-0.1.39/src/usage.c.old	2017-02-28 15:00:25.435438622 +0100
-+++ mhddfs-0.1.39/src/usage.c	2017-02-28 15:00:33.847454958 +0100
-@@ -43,7 +43,7 @@
- 		"\n"
- 		" see fusermount(1) for information about other options\n"
- 		"";
--	fprintf(to, usage);
-+	fputs(usage, to);
- 	if (to==stdout) exit(0);
- 	exit(-1);
- }
-

pkgs/by-name/mh/mhddfs/package.nix

@@ -1,48 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchurl,
-  fuse,
-  pkg-config,
-  attr,
-  uthash,
-}:
-
-stdenv.mkDerivation (finalAttrs: {
-  pname = "mhddfs";
-  version = "0.1.39";
-
-  src = fetchurl {
-    url = "https://mhddfs.uvw.ru/downloads/mhddfs_${finalAttrs.version}.tar.gz";
-    sha256 = "14ggmh91vv69fp2qpz0nxp0hprlw2wsijss2k2485hb0ci4cabvh";
-  };
-
-  nativeBuildInputs = [ pkg-config ];
-  buildInputs = [
-    fuse
-    attr
-    uthash
-  ];
-
-  patches = [
-    ./fix-format-security-error.patch
-  ];
-
-  postPatch = ''
-    substituteInPlace src/main.c --replace "attr/xattr.h" "sys/xattr.h"
-    substituteInPlace src/tools.c --replace "attr/xattr.h" "sys/xattr.h"
-  '';
-
-  installPhase = ''
-    mkdir -p $out/bin
-    cp mhddfs $out/bin/
-  '';
-
-  meta = {
-    homepage = "https://mhddfs.uvw.ru/";
-    description = "Combines a several mount points into the single one";
-    license = lib.licenses.gpl3;
-    maintainers = [ lib.maintainers.makefu ];
-    mainProgram = "mhddfs";
-  };
-})

pkgs/top-level/aliases.nix

@@ -1431,6 +1431,7 @@ mapAliases {
   metaBuildEnv = throw "'metaBuildEnv' has been removed, due to it being ancient unmaintained software"; # Added 2026-02-11
   meteo = throw "'meteo' has been removed as it was unmaintained and depends on deprecated webkitgtk_4_0"; # Added 2025-10-09
   metersLv2 = warnAlias "'metersLv2' has been renamed to 'meters-lv2'" meters-lv2; # Added 2026-02-08
+  mhddfs = throw "'mhddfs' has been removed because upstream marked it as unmaintained on 2015-03-17. Consider using 'mergerfs' as potential alternative"; # Added 2026-05-31
   microcodeAmd = throw "'microcodeAmd' has been renamed to/replaced by 'microcode-amd'"; # Converted to throw 2025-10-27
   microcodeIntel = throw "'microcodeIntel' has been renamed to/replaced by 'microcode-intel'"; # Converted to throw 2025-10-27
   microsoft_gsl = throw "'microsoft_gsl' has been renamed to/replaced by 'microsoft-gsl'"; # Converted to throw 2025-10-27