anchor.diff:        sha256 = "06961hn66rhjijfvyym21h39wk98sfxhp051da6gz0n9byhwc6zg";
       })
   
  -    # undo https://sourceforge.net/p/maxima/code/ci/f5e9b0f7eb122c4e48ea9df144dd57221e5ea0ca, see see https://trac.sagemath.org/ticket/13364#comment:93
  +    # undo https://sourceforge.net/p/maxima/code/ci/f5e9b0f7eb122c4e48ea9df144dd57221e5ea0ca
  +    # see https://trac.sagemath.org/ticket/13364#comment:93
       (fetchpatch {
         url = "https://git.sagemath.org/sage.git/plain/build/pkgs/maxima/patches/undoing_true_false_printing_patch.patch?id=07d6c37d18811e2b377a9689790a7c5e24da16ba";
         sha256 = "0fvi3rcjv6743sqsbgdzazy9jb6r1p1yq63zyj9fx42wd1hgf7yx";
  
positive.code:     ecl = ecl;
    };
  
    meta = {
      description = "Computer algebra system";
      homepage = "http://maxima.sourceforge.net";
      license = lib.licenses.gpl2;
  
      longDescription = ''
        Maxima is a fairly complete computer algebra system written in
  
negative.code:       DOE-MACSYMA and licensed under the GPL. Its abilities include
        symbolic integration, 3D plotting, and an ODE solver.
      '';
      maintainers = with maintainers; [ doronbehar ];
      platforms = platforms.unix;
    };
  }
  