From 499149ef950c54c669e4a1d6cdf6f4cc121f543e Mon Sep 17 00:00:00 2001
From: Jules Aguillon <jules@j3s.fr>
Date: Tue, 4 Jul 2023 15:01:03 +0200
Subject: [PATCH] ocamlPackages.b0: Init at 0.0.5

The recent package is a dependency for odig.
---
 pkgs/development/ocaml-modules/b0/default.nix | 46 +++++++++++++++++++
 pkgs/top-level/ocaml-packages.nix             |  2 +
 2 files changed, 48 insertions(+)
 create mode 100644 pkgs/development/ocaml-modules/b0/default.nix

diff --git a/pkgs/development/ocaml-modules/b0/default.nix b/pkgs/development/ocaml-modules/b0/default.nix
new file mode 100644
index 000000000000..e3c21c31e689
--- /dev/null
+++ b/pkgs/development/ocaml-modules/b0/default.nix
@@ -0,0 +1,46 @@
+{ lib, stdenv, fetchurl, ocaml, findlib, topkg, ocamlbuild, cmdliner }:
+
+let
+
+in lib.throwIfNot (lib.versionAtLeast ocaml.version "4.08")
+"b0 is not available for OCaml ${ocaml.version}"
+
+stdenv.mkDerivation rec {
+
+  pname = "ocaml${ocaml.version}-b0";
+  version = "0.0.5";
+
+  src = fetchurl {
+    url = "${meta.homepage}/releases/b0-${version}.tbz";
+    sha256 = "sha256-ty04JQcP4RCme/VQw0ko2IBebWWX5cBU6nRTTeV1I/I=";
+  };
+
+  strictDeps = true;
+
+  nativeBuildInputs = [ ocaml findlib ocamlbuild topkg ];
+  buildInputs = [ topkg cmdliner ];
+
+  inherit (topkg) buildPhase installPhase;
+
+  meta = with lib; {
+    description = "Software construction and deployment kit";
+    longDescription = ''
+      WARNING this package is unstable and work in progress, do not depend on
+      it.
+      B0 describes software construction and deployments using modular and
+      customizable definitions written in OCaml. B0 describes:
+      * Build environments.
+      * Software configuration, build and testing.
+      * Source and binary deployments.
+      * Software life-cycle procedures.
+      B0 also provides the B00 build library which provides abitrary build
+      abstraction with reliable and efficient incremental rebuilds. The B00
+      library can be – and has been – used on its own to devise domain specific
+      build systems.
+    '';
+    homepage = "https://erratique.ch/software/b0";
+    inherit (ocaml.meta) platforms;
+    license = licenses.isc;
+    maintainers = [ maintainers.Julow ];
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index e6cbbec2da74..0767b58a43af 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -60,6 +60,8 @@ let
 
     ### B ###
 
+    b0 = callPackage ../development/ocaml-modules/b0 { };
+
     bap = janeStreet_0_15.bap;
 
     base64 = callPackage ../development/ocaml-modules/base64 { };