ocamlPackages.opam-0install-cudf: init at 0.5.0

pkgs/development/ocaml-modules/opam-0install-cudf/default.nix

@@ -0,0 +1,50 @@
+{
+  lib,
+  buildDunePackage,
+  fetchFromGitHub,
+  _0install-solver,
+  alcotest,
+  cudf,
+}:
+
+buildDunePackage (finalAttrs: {
+  pname = "opam-0install-cudf";
+  version = "0.5.0";
+
+  src = fetchFromGitHub {
+    owner = "ocaml-opam";
+    repo = "opam-0install-cudf";
+    rev = "v${finalAttrs.version}";
+    hash = "sha256-TETfvR1Di4c8CylsKnMal/GfQcqMSr36o7511u1bYYs=";
+  };
+
+  propagatedBuildInputs = [
+    cudf
+    _0install-solver
+  ];
+
+  doCheck = true;
+  checkInputs = [
+    alcotest
+  ];
+
+  meta = {
+    homepage = "https://github.com/ocaml-opam/opam-0install-cudf";
+    description = "Opam solver using 0install backend using the CUDF interface";
+    longDescription = ''
+      Opam's default solver is designed to maintain a set of packages
+      over time, minimising disruption when installing new programs and
+      finding a compromise solution across all packages.
+
+      In many situations (e.g. CI, local roots or duniverse builds) this
+      is not necessary, and we can get a solution much faster by using
+      a different algorithm.
+
+      This package provides a generic solver library which uses 0install's
+      solver library. The library uses the CUDF library in order to interface
+      with opam as it is the format common used to talk to all the supported solvers.
+    '';
+    license = lib.licenses.isc;
+    maintainers = [ lib.maintainers.stepbrobd ];
+  };
+})

pkgs/top-level/ocaml-packages.nix

@@ -1574,6 +1574,8 @@ let
 
         omd = callPackage ../development/ocaml-modules/omd { };
 
+        opam-0install-cudf = callPackage ../development/ocaml-modules/opam-0install-cudf { };
+
         opam-core = callPackage ../development/ocaml-modules/opam-core {
           inherit (pkgs) opam;
         };