{stdenv, fetchurl}: stdenv.mkDerivation { name = "units-2.02"; src = fetchurl { url = mirror://gnu/units/units-2.02.tar.gz; sha256 = "16jfji9g1zc99agd5dcinajinhcxr4dgq2lrbc9md69ir5qgld1b"; }; meta = { description = "Unit conversion tool"; }; }