ocp-indent: readd old version 1.5.2

Some packages (ocp-index, for instance) are not yet compatible with
newer versions of ocp-indent. So version 1.5.2 is still needed.

pkgs/development/tools/ocaml/ocp-indent/1.5.2.nix

@@ -0,0 +1,37 @@
+{ stdenv, fetchzip, ocaml, findlib, ocpBuild, opam, cmdliner }:
+
+let inherit (stdenv.lib) getVersion versionAtLeast; in
+
+assert versionAtLeast (getVersion ocaml) "3.12.1";
+assert versionAtLeast (getVersion ocpBuild) "1.99.6-beta";
+assert versionAtLeast "0.9.8" (getVersion cmdliner);
+
+stdenv.mkDerivation {
+
+  name = "ocp-indent-1.5.2";
+
+  src = fetchzip {
+    url = "https://github.com/OCamlPro/ocp-indent/archive/1.5.2.tar.gz";
+    sha256 = "0ynv2yhm7akpvqp72pdabhddwr352s1k85q8m1khsvspgg1mkiqz";
+  };
+
+  nativeBuildInputs = [ ocpBuild opam ];
+
+  buildInputs = [ ocaml findlib cmdliner ];
+
+  createFindlibDestdir = true;
+
+  preConfigure = "patchShebangs ./install.sh";
+
+  postInstall = ''
+    mv $out/lib/{ocp-indent,ocaml/${getVersion ocaml}/site-lib/}
+  '';
+
+  meta = with stdenv.lib; {
+    homepage = "http://typerex.ocamlpro.com/ocp-indent.html";
+    description = "A customizable tool to indent OCaml code";
+    license = licenses.gpl3;
+    platforms = ocaml.meta.platforms or [];
+    maintainers = [ maintainers.jirkamarsik ];
+  };
+}

pkgs/top-level/ocaml-packages.nix

@@ -389,6 +389,7 @@ let
     ocpBuild = callPackage ../development/tools/ocaml/ocp-build { };
 
     ocpIndent = callPackage ../development/tools/ocaml/ocp-indent { cmdliner = cmdliner_1_0; };
+    ocpIndent_1_5_2 = callPackage ../development/tools/ocaml/ocp-indent/1.5.2.nix { };
 
     ocp-index = callPackage ../development/tools/ocaml/ocp-index { };