1 files changed, 51 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/tools/ocaml/cppo/default.nix b/nixpkgs/pkgs/development/tools/ocaml/cppo/default.nix
new file mode 100644
index 000000000000..159260750a25
--- /dev/null
+++ b/nixpkgs/pkgs/development/tools/ocaml/cppo/default.nix
@@ -0,0 +1,51 @@
+{ stdenv, fetchFromGitHub, ocaml, findlib, ocamlbuild, dune }:
+let
+  pname = "cppo";
+  webpage = "http://mjambon.com/${pname}.html";
+in
+assert stdenv.lib.versionAtLeast ocaml.version "3.12";
+
+let param =
+  if stdenv.lib.versionAtLeast ocaml.version "4.02" then {
+    version = "1.6.5";
+    sha256 = "03c0amszy28shinvz61hm340jz446zz5763a1pdqlza36kwcj0p0";
+    buildInputs = [ dune ];
+    extra = {
+      inherit (dune) installPhase;
+    };
+  } else {
+    version = "1.5.0";
+    sha256 = "1xqldjz9risndnabvadw41fdbi5sa2hl4fnqls7j9xfbby1izbg8";
+    extra = {
+      createFindlibDestdir = true;
+      makeFlags = "PREFIX=$(out)";
+      preBuild = ''
+        mkdir $out/bin
+      '';
+    };
+  }
+; in
+
+stdenv.mkDerivation (rec {
+
+  name = "${pname}-${param.version}";
+
+  src = fetchFromGitHub {
+    owner = "mjambon";
+    repo = pname;
+    rev = "v${param.version}";
+    inherit (param) sha256;
+  };
+
+  buildInputs = [ ocaml findlib ocamlbuild ] ++ (param.buildInputs or []);
+
+  meta = with stdenv.lib; {
+    description = "The C preprocessor for OCaml";
+    longDescription = ''
+      Cppo is an equivalent of the C preprocessor targeted at the OCaml language and its variants.
+    '';
+    homepage = "${webpage}";
+    maintainers = [ maintainers.vbgl ];
+    license = licenses.bsd3;
+  };
+} // param.extra)