From 491a3d732fa31b3ca38af680a00d2118ffa7a954 Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Fri, 28 Jul 2023 07:29:16 +0200
Subject: [PATCH] ocamlPackages.{trace,trace-tef}: init at 0.2

---
 .../ocaml-modules/trace/default.nix           | 21 +++++++++++++++++++
 pkgs/development/ocaml-modules/trace/tef.nix  | 15 +++++++++++++
 pkgs/top-level/ocaml-packages.nix             |  4 ++++
 3 files changed, 40 insertions(+)
 create mode 100644 pkgs/development/ocaml-modules/trace/default.nix
 create mode 100644 pkgs/development/ocaml-modules/trace/tef.nix

diff --git a/pkgs/development/ocaml-modules/trace/default.nix b/pkgs/development/ocaml-modules/trace/default.nix
new file mode 100644
index 000000000000..208a879b1d1c
--- /dev/null
+++ b/pkgs/development/ocaml-modules/trace/default.nix
@@ -0,0 +1,21 @@
+{ lib, fetchurl, buildDunePackage }:
+
+buildDunePackage rec {
+  pname = "trace";
+  version = "0.2";
+
+  minimalOCamlVersion = "4.05";
+
+  src = fetchurl {
+    url = "https://github.com/c-cube/trace/releases/download/v${version}/trace-${version}.tbz";
+    hash = "sha256-iScnZxjgzDqZFxbDDXB0K4TkdDJDcrMC03sK/ltbqJQ=";
+  };
+
+  meta = {
+    description = "Common interface for tracing/instrumentation libraries in OCaml";
+    license = lib.licenses.mit;
+    homepage = "https://c-cube.github.io/trace/";
+    maintainers = [ lib.maintainers.vbgl ];
+  };
+
+}
diff --git a/pkgs/development/ocaml-modules/trace/tef.nix b/pkgs/development/ocaml-modules/trace/tef.nix
new file mode 100644
index 000000000000..c1a6f9251554
--- /dev/null
+++ b/pkgs/development/ocaml-modules/trace/tef.nix
@@ -0,0 +1,15 @@
+{ buildDunePackage, trace, mtime }:
+
+buildDunePackage {
+  pname = "trace-tef";
+  inherit (trace) src version;
+
+  propagatedBuildInputs = [ mtime trace ];
+
+  doCheck = true;
+
+  meta = trace.meta // {
+    description = "A simple backend for trace, emitting Catapult JSON into a file";
+  };
+
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 02e659de3a99..de2acdd372da 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -1643,6 +1643,10 @@ let
       inherit (pkgs.python3Packages) torch;
     };
 
+    trace = callPackage ../development/ocaml-modules/trace { };
+
+    trace-tef = callPackage ../development/ocaml-modules/trace/tef.nix { };
+
     trie = callPackage ../development/ocaml-modules/trie { };
 
     tsdl = callPackage ../development/ocaml-modules/tsdl {