ocamlPackages.luv: init at 0.5.7

Enabling tests is not feasible as the test suite takes > 45min (haven't
even run it to completion yet) which is not a good idea in ocamlPackages
where you often have to build from source. Additionally it would require
fetching the git repository since the test suite is not contained in the
release tarball.

Co-authored-by: locallycompact <dan.firth@homotopic.tech>

pkgs/development/ocaml-modules/luv/default.nix

@@ -0,0 +1,35 @@
+{ lib, buildDunePackage, fetchurl
+, ctypes, result
+, alcotest
+, file
+}:
+
+buildDunePackage rec {
+  pname = "luv";
+  version = "0.5.7";
+  useDune2 = true;
+
+  src = fetchurl {
+    url = "https://github.com/aantron/luv/releases/download/${version}/luv-${version}.tar.gz";
+    sha256 = "0wjnw5riydnzsk1xdzljlpzdnjwpa0j597y6x6ma4990mqj54260";
+  };
+
+  postConfigure = ''
+    for f in src/c/vendor/configure/{ltmain.sh,configure}; do
+      substituteInPlace "$f" --replace /usr/bin/file file
+    done
+  '';
+
+  nativeBuildInputs = [ file ];
+  propagatedBuildInputs = [ ctypes result ];
+  checkInputs = [ alcotest ];
+  doCheck = true;
+
+  meta = with lib; {
+    homepage = "https://github.com/aantron/luv";
+    description = "Binding to libuv: cross-platform asynchronous I/O";
+    # MIT-licensed, extra licenses apply partially to libuv vendor
+    license = with licenses; [ mit bsd2 bsd3 cc-by-sa-40 ];
+    maintainers = with maintainers; [ locallycompact sternenseemann ];
+  };
+}

pkgs/top-level/ocaml-packages.nix

@@ -572,6 +572,10 @@ let
 
     lua-ml = callPackage ../development/ocaml-modules/lua-ml { };
 
+    luv = callPackage ../development/ocaml-modules/luv {
+      inherit (pkgs) file;
+    };
+
     lwt = callPackage ../development/ocaml-modules/lwt {
       ocaml-migrate-parsetree = ocaml-migrate-parsetree-2-1;
     };