@@ -1,12 +1,25 @@
11{ stdenv, fetchurl, ocaml, findlib, ocamlbuild, topkg }:
22
3−stdenv.mkDerivation rec {
4− version = "0.8.3";
5− name = "ocaml${ocaml.version}-astring-${version}";
3+let
4+ # Use astring 0.8.3 for OCaml < 4.05
5+ param =
6+ if stdenv.lib.versionAtLeast ocaml.version "4.05"
7+ then {
8+ version = "0.8.5";
9+ sha256 = "1ykhg9gd3iy7zsgyiy2p9b1wkpqg9irw5pvcqs3sphq71iir4ml6";
10+ } else {
11+ version = "0.8.3";
12+ sha256 = "0ixjwc3plrljvj24za3l9gy0w30lsbggp8yh02lwrzw61ls4cri0";
13+ };
14+in
15+
16+stdenv.mkDerivation {
17+ name = "ocaml${ocaml.version}-astring-${param.version}";
18+ inherit (param) version;
619
720 src = fetchurl {
8− url = "https://erratique.ch/software/astring/releases/astring-${version}.tbz";
9− sha256 = "0ixjwc3plrljvj24za3l9gy0w30lsbggp8yh02lwrzw61ls4cri0";
21+ url = "https://erratique.ch/software/astring/releases/astring-${param.version}.tbz";
22+ inherit (param) sha256;
1023 };
1124
1225 buildInputs = [ ocaml findlib ocamlbuild topkg ];