1 files changed, 49 insertions, 0 deletions
diff --git a/pkgs/development/tools/ocaml/utop/default.nix b/pkgs/development/tools/ocaml/utop/default.nix
new file mode 100644
index 00000000000..c5c0ac9a3ed
--- /dev/null
+++ b/pkgs/development/tools/ocaml/utop/default.nix
@@ -0,0 +1,49 @@
+{stdenv, fetchurl, ocaml, findlib, lambdaTerm, ocaml_lwt, makeWrapper,
+ ocaml_react, camomile, zed
+}:
+
+stdenv.mkDerivation rec {
+  version = "1.15";
+  name = "utop-${version}";
+
+  src = fetchurl {
+    url = https://github.com/diml/utop/archive/1.15.tar.gz;
+    sha256 = "106v0x6sa2x10zgmjf73mpzws7xiqanxswivd00iqnpc0bcpkmrr";
+  };
+
+  buildInputs = [ ocaml findlib makeWrapper];
+
+  propagatedBuildInputs = [ lambdaTerm ocaml_lwt ];
+
+  createFindlibDestdir = true;
+
+  buildPhase = ''
+    make
+    make doc
+    '';
+
+  postFixup =
+  let ocamlVersion = (builtins.parseDrvName (ocaml.name)).version;
+  in
+   ''
+   for prog in "$out"/bin/*
+   do
+    wrapProgram $prog --set CAML_LD_LIBRARY_PATH "${ocaml_lwt}"/lib/ocaml/${ocamlVersion}/site-lib/lwt/:"${lambdaTerm}"/lib/ocaml/${ocamlVersion}/site-lib/lambda-term/:'$CAML_LD_LIBRARY_PATH' --set OCAMLPATH "${ocaml_lwt}"/lib/ocaml/${ocamlVersion}/site-lib:${ocaml_react}/lib/ocaml/${ocamlVersion}/site-lib:${camomile}/lib/ocaml/${ocamlVersion}/site-lib:${zed}/lib/ocaml/${ocamlVersion}/site-lib:${lambdaTerm}/lib/ocaml/${ocamlVersion}/site-lib:"$out"/lib/ocaml/${ocamlVersion}/site-lib:'$OCAMLPATH'
+   done
+   '';
+
+  meta = {
+    description = "Universal toplevel for OCaml";
+    longDescription = ''
+    utop is an improved toplevel for OCaml. It can run in a terminal or in Emacs. It supports line edition, history, real-time and context sensitive completion, colors, and more.
+
+    It integrates with the tuareg mode in Emacs.
+    '';
+    homepage = https://github.com/diml/utop;
+    license = stdenv.lib.licenses.bsd3;
+    platforms = ocaml.meta.platforms;
+    maintainers = [
+      stdenv.lib.maintainers.gal_bolle
+    ];
+  };
+}