{ stdenv, fetchurl, ocaml, findlib, ocamlbuild, opaline }: let inherit (stdenv.lib) getVersion versionAtLeast; pname = "gg"; version = "0.9.1"; webpage = "https://erratique.ch/software/${pname}"; in assert versionAtLeast (getVersion ocaml) "4.01.0"; stdenv.mkDerivation rec { name = "ocaml-${pname}-${version}"; src = fetchurl { url = "${webpage}/releases/${pname}-${version}.tbz"; sha256 = "0czj41sr8jsivl3z8wyblf9k971j3kx2wc3s0c1nhzcc8allg9i2"; }; buildInputs = [ ocaml findlib ocamlbuild opaline ]; createFindlibDestdir = true; buildPhase = "ocaml pkg/build.ml native=true native-dynlink=true"; installPhase = "opaline -libdir $OCAMLFIND_DESTDIR"; meta = with stdenv.lib; { description = "Basic types for computer graphics in OCaml"; longDescription = '' Gg is an OCaml module providing basic types for computer graphics. It defines types and functions for floats, vectors, points, sizes, matrices, quaternions, axis aligned boxes, colors, color spaces, and raster data. ''; homepage = "${webpage}"; platforms = ocaml.meta.platforms or []; license = licenses.bsd3; maintainers = [ maintainers.jirkamarsik ]; }; }