self: super: {
  sympa = super.sympa.overrideAttrs(old: {
    # https://github.com/NixOS/nixpkgs/pull/83258/files
    src = self.fetchFromGitHub {
      owner = "sympa-community";
      repo  = "sympa";
      rev = "6.2.54";
      sha256 = "07wfvr8rrg7pwkl2zglrdri7n42rl9gwrjbaffb8m37wq67s7fca";
    };
    #configureFlags = ["--enable-fhs"] ++ old.configureFlags;
  });
}