nixpkgs/pkgs/development/ocaml-modules/ocaml-freestanding/default.nix

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{ lib
, stdenv
, fetchFromGitHub
, ocaml
, pkg-config
, solo5
, target ? "xen"
}:
# note: this is not technically an ocaml-module,
# but can be built with different compilers, so
# the ocamlPackages set is very useful.
let
pname = "ocaml-freestanding";
in
if lib.versionOlder ocaml.version "4.08"
then builtins.throw "${pname} is not available for OCaml ${ocaml.version}"
else
stdenv.mkDerivation rec {
name = "ocaml${ocaml.version}-${pname}-${version}";
inherit pname;
version = "0.6.4";
src = fetchFromGitHub {
owner = "mirage";
repo = pname;
rev = "v${version}";
sha256 = "0w3x2wfd04qr6mci4cp1gfqw33yysp8gamgkpgbgwslr0skryiq5";
};
postUnpack = ''
# get ocaml-src from the ocaml drv instead of via ocamlfind
mkdir -p "${src.name}/ocaml"
tar --strip-components=1 -xf ${ocaml.src} -C "${src.name}/ocaml"
'';
patches = [
./no-opam.patch
./configurable-binding.patch
];
nativeBuildInputs = [
ocaml
pkg-config
];
propagatedBuildInputs = [ solo5 ];
configurePhase = ''
runHook preConfigure
env PKG_CONFIG_DEPS=solo5-bindings-${target} sh configure.sh
runHook postConfigure
'';
preBuild = ''
# perform substitutions, so opam isn't needed
for flags in flags/cflags.tmp flags/libs.tmp; do
substitute "$flags.in" "$flags" \
--replace "%{prefix}%" "$out" \
--replace "%{ocaml-freestanding:lib}%" "$out/lib"
done
'';
installPhase = ''
runHook preInstall
./install.sh "$out"
runHook postInstall
'';
meta = with lib; {
description = "Freestanding OCaml runtime";
license = licenses.mit;
maintainers = [ maintainers.sternenseemann ];
homepage = "https://github.com/mirage/ocaml-freestanding";
platforms = builtins.map ({ arch, os }: "${arch}-${os}")
(cartesianProductOfSets {
arch = [ "aarch64" "x86_64" ];
os = [ "linux" ];
} ++ [
{ arch = "x86_64"; os = "freebsd"; }
{ arch = "x86_64"; os = "openbsd"; }
]);
};
}