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{ stdenv, fetchFromGitHub, ocaml, findlib, ocamlbuild, dune }:
let
pname = "cppo";
webpage = "https://github.com/ocaml-community/${pname}";
in
assert stdenv.lib.versionAtLeast ocaml.version "3.12";
let param =
if stdenv.lib.versionAtLeast ocaml.version "4.02" then {
version = "1.6.5";
sha256 = "03c0amszy28shinvz61hm340jz446zz5763a1pdqlza36kwcj0p0";
buildInputs = [ dune ];
extra = {
inherit (dune) installPhase;
};
} else {
version = "1.5.0";
sha256 = "1xqldjz9risndnabvadw41fdbi5sa2hl4fnqls7j9xfbby1izbg8";
extra = {
createFindlibDestdir = true;
makeFlags = [ "PREFIX=$(out)" ];
preBuild = ''
mkdir $out/bin
'';
};
}
; in
stdenv.mkDerivation ({
name = "${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)
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