dune_3: init at 3.0.2

pkgs/development/tools/ocaml/dune/3.nix

@@ -0,0 +1,40 @@
+{ lib, stdenv, fetchurl, ocaml, findlib, darwin }:
+
+if lib.versionOlder ocaml.version "4.08"
+then throw "dune 3 is not available for OCaml ${ocaml.version}"
+else
+
+stdenv.mkDerivation rec {
+  pname = "dune";
+  version = "3.0.2";
+
+  src = fetchurl {
+    url = "https://github.com/ocaml/dune/releases/download/${version}/fiber-${version}.tbz";
+    sha256 = "sha256-o108qIeWMOX0VU/wWdc5bg/UDCT2CCcw/Xx3nFiDbes=";
+  };
+
+  nativeBuildInputs = [ ocaml findlib ];
+
+  buildInputs = lib.optionals stdenv.isDarwin [
+    darwin.apple_sdk.frameworks.Foundation
+  ];
+
+  strictDeps = true;
+
+  buildFlags = "release";
+
+  dontAddPrefix = true;
+  dontAddStaticConfigureFlags = true;
+  configurePlatforms = [];
+
+  installFlags = [ "PREFIX=${placeholder "out"}" "LIBDIR=$(OCAMLFIND_DESTDIR)" ];
+
+  meta = {
+    homepage = "https://dune.build/";
+    description = "A composable build system";
+    changelog = "https://github.com/ocaml/dune/raw/${version}/CHANGES.md";
+    maintainers = [ lib.maintainers.vbgl lib.maintainers.marsam ];
+    license = lib.licenses.mit;
+    inherit (ocaml.meta) platforms;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -2921,7 +2921,7 @@ with pkgs;
   duf = callPackage ../tools/misc/duf { };
 
   inherit (ocaml-ng.ocamlPackages_4_10) dune_1;
-  inherit (ocamlPackages) dune_2 dune-release;
+  inherit (ocamlPackages) dune_2 dune_3 dune-release;
 
   duperemove = callPackage ../tools/filesystems/duperemove { };
 

pkgs/top-level/ocaml-packages.nix

@@ -310,6 +310,8 @@ let
       then pkgs.dune_2
       else throw "dune_2 is not available for OCaml ${ocaml.version}";
 
+    dune_3 = callPackage ../development/tools/ocaml/dune/3.nix { };
+
     dune-action-plugin = callPackage ../development/ocaml-modules/dune-action-plugin { };
 
     dune-build-info = callPackage ../development/ocaml-modules/dune-build-info { };