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{ stdenv, fetchFromGitHub, ocaml, findlib, ocamlbuild, menhir, yojson, ulex, pprint, fix, functory }:
if stdenv.lib.versionAtLeast ocaml.version "4.06"
then throw "mezzo is not available for OCaml ${ocaml.version}"
else
let
check-ocaml-version = with stdenv.lib; versionAtLeast (getVersion ocaml);
in
assert check-ocaml-version "4";
stdenv.mkDerivation {
name = "mezzo-0.0.m8";
src = fetchFromGitHub {
owner = "protz";
repo = "mezzo";
rev = "m8";
sha256 = "0yck5r6di0935s3iy2mm9538jkf77ssr789qb06ms7sivd7g3ip6";
};
buildInputs = [ ocaml findlib ocamlbuild yojson menhir ulex pprint fix functory ];
# Sets warning 3 as non-fatal
prePatch = stdenv.lib.optionalString (check-ocaml-version "4.02") ''
substituteInPlace myocamlbuild.pre.ml \
--replace '@1..3' '@1..2+3'
'';
createFindlibDestdir = true;
postInstall = ''
mkdir $out/bin
cp mezzo $out/bin/
'';
meta = with stdenv.lib; {
homepage = http://protz.github.io/mezzo/;
description = "A programming language in the ML tradition, which places strong emphasis on the control of aliasing and access to mutable memory";
license = licenses.gpl2;
platforms = ocaml.meta.platforms or [];
};
}
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