nixpkgs/pkgs/tools/filesystems/zerofree/default.nix


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{ lib, stdenv, fetchurl, installShellFiles, e2fsprogs }:

let
  manpage = fetchurl {
    url = "https://manpages.ubuntu.com/manpages.gz/xenial/man8/zerofree.8.gz";
    sha256 = "0y132xmjl02vw41k794psa4nmjpdyky9f6sf0h4f7rvf83z3zy4k";
  };
in stdenv.mkDerivation rec {
  pname = "zerofree";
  version = "1.1.1";

  src = fetchurl {
    url = "https://frippery.org/uml/${pname}-${version}.tgz";
    sha256 = "0rrqfa5z103ws89vi8kfvbks1cfs74ix6n1wb6vs582vnmhwhswm";
  };

  buildInputs = [ e2fsprogs installShellFiles ];

  installPhase = ''
    mkdir -p $out/bin $out/share/zerofree
    cp zerofree $out/bin
    cp COPYING $out/share/zerofree/COPYING
    installManPage ${manpage}
  '';

  meta = {
    homepage = "https://frippery.org/uml/";
    description = "Zero free blocks from ext2, ext3 and ext4 file-systems";
    platforms = lib.platforms.linux;
    license = lib.licenses.gpl2;
    maintainers = [ lib.maintainers.theuni ];
  };
}