.github/workflows/format.yml

@@ -25,6 +25,6 @@ jobs:
           dune-cache: true
           allow-prerelease-opam: true
 
-      - run: opam install ocamlformat.0.27.0 lwt.6.1.1
+      - run: opam install ocamlformat.0.27.0
       - run: opam exec -- make format-check
 

.github/workflows/main.yml

@@ -42,8 +42,10 @@ jobs:
           allow-prerelease-opam: true
 
       - run: |
+          opam pin trace https://github.com/ocaml-tracing/ocaml-trace.git#main -y -n
+          opam pin https://github.com/ocaml-tracing/ambient-context.git#HEAD -y -n
           opam install pbrt.4.0 -y
-          opam install ambient-context lwt.5.9.2
+          opam install ambient-context
 
       # We cannot install packages that need eio on ocaml versions before 5
       - run: |
@@ -60,11 +62,6 @@ jobs:
       - run: opam install trace
       - run: opam exec -- dune build @install -p opentelemetry
 
-      - run: opam install lwt.6.1.1 -y
-        if: ${{ matrix.ocaml-compiler == '5.3.x' }}
-      - run: opam exec -- dune build @install -p opentelemetry,opentelemetry-client,opentelemetry-lwt,opentelemetry-client-cohttp-lwt
-        if: ${{ matrix.ocaml-compiler == '5.3.x' }}
-
       - run: opam install ocaml-protoc
       - run: opam exec -- dune build @lint
 

dune-project

@@ -1,4 +1,4 @@
-(lang dune 3.11)
+(lang dune 2.9)
 
 (name opentelemetry)
 
@@ -49,7 +49,8 @@
     (>= 0.27)
     (< 0.28)))
   (mtime
-   (>= "1.4")))
+   (>= "1.4"))
+  dune-build-info)
  (depopts atomic trace thread-local-storage lwt eio picos)
  (conflicts
   (trace

opentelemetry-client-cohttp-eio.opam

@@ -12,7 +12,7 @@ license: "MIT"
 homepage: "https://github.com/imandra-ai/ocaml-opentelemetry"
 bug-reports: "https://github.com/imandra-ai/ocaml-opentelemetry/issues"
 depends: [
-  "dune" {>= "3.11"}
+  "dune" {>= "2.9"}
   "ocaml" {>= "5.00"}
   "mtime" {>= "1.4"}
   "ca-certs"
@@ -37,9 +37,11 @@ build: [
     name
     "-j"
     jobs
+    "--promote-install-files=false"
     "@install"
     "@runtest" {with-test}
     "@doc" {with-doc}
   ]
+  ["dune" "install" "-p" name "--create-install-files" name]
 ]
 dev-repo: "git+https://github.com/imandra-ai/ocaml-opentelemetry.git"

opentelemetry-client-cohttp-lwt.opam

@@ -12,7 +12,7 @@ license: "MIT"
 homepage: "https://github.com/imandra-ai/ocaml-opentelemetry"
 bug-reports: "https://github.com/imandra-ai/ocaml-opentelemetry/issues"
 depends: [
-  "dune" {>= "3.11"}
+  "dune" {>= "2.9"}
   "ocaml" {>= "4.08"}
   "mtime" {>= "1.4"}
   "opentelemetry" {= version}
@@ -37,9 +37,11 @@ build: [
     name
     "-j"
     jobs
+    "--promote-install-files=false"
     "@install"
     "@runtest" {with-test}
     "@doc" {with-doc}
   ]
+  ["dune" "install" "-p" name "--create-install-files" name]
 ]
 dev-repo: "git+https://github.com/imandra-ai/ocaml-opentelemetry.git"

opentelemetry-client-ocurl-lwt.opam

@@ -12,7 +12,7 @@ license: "MIT"
 homepage: "https://github.com/imandra-ai/ocaml-opentelemetry"
 bug-reports: "https://github.com/imandra-ai/ocaml-opentelemetry/issues"
 depends: [
-  "dune" {>= "3.11"}
+  "dune" {>= "2.9"}
   "ocaml" {>= "4.08"}
   "mtime" {>= "1.4"}
   "opentelemetry" {= version}
@@ -33,9 +33,11 @@ build: [
     name
     "-j"
     jobs
+    "--promote-install-files=false"
     "@install"
     "@runtest" {with-test}
     "@doc" {with-doc}
   ]
+  ["dune" "install" "-p" name "--create-install-files" name]
 ]
 dev-repo: "git+https://github.com/imandra-ai/ocaml-opentelemetry.git"

opentelemetry-client-ocurl.opam

@@ -12,7 +12,7 @@ license: "MIT"
 homepage: "https://github.com/imandra-ai/ocaml-opentelemetry"
 bug-reports: "https://github.com/imandra-ai/ocaml-opentelemetry/issues"
 depends: [
-  "dune" {>= "3.11"}
+  "dune" {>= "2.9"}
   "ocaml" {>= "4.08"}
   "mtime" {>= "1.4"}
   "opentelemetry" {= version}
@@ -31,9 +31,11 @@ build: [
     name
     "-j"
     jobs
+    "--promote-install-files=false"
     "@install"
     "@runtest" {with-test}
     "@doc" {with-doc}
   ]
+  ["dune" "install" "-p" name "--create-install-files" name]
 ]
 dev-repo: "git+https://github.com/imandra-ai/ocaml-opentelemetry.git"

opentelemetry-client.opam

@@ -13,7 +13,7 @@ tags: ["tracing" "opentelemetry" "sdk"]
 homepage: "https://github.com/imandra-ai/ocaml-opentelemetry"
 bug-reports: "https://github.com/imandra-ai/ocaml-opentelemetry/issues"
 depends: [
-  "dune" {>= "3.11"}
+  "dune" {>= "2.9"}
   "opentelemetry" {= version}
   "odoc" {with-doc}
   "alcotest" {with-test}
@@ -28,9 +28,11 @@ build: [
     name
     "-j"
     jobs
+    "--promote-install-files=false"
     "@install"
     "@runtest" {with-test}
     "@doc" {with-doc}
   ]
+  ["dune" "install" "-p" name "--create-install-files" name]
 ]
 dev-repo: "git+https://github.com/imandra-ai/ocaml-opentelemetry.git"

opentelemetry-cohttp-lwt.opam

@@ -12,7 +12,7 @@ license: "MIT"
 homepage: "https://github.com/imandra-ai/ocaml-opentelemetry"
 bug-reports: "https://github.com/imandra-ai/ocaml-opentelemetry/issues"
 depends: [
-  "dune" {>= "3.11"}
+  "dune" {>= "2.9"}
   "ocaml" {>= "4.08"}
   "opentelemetry" {= version}
   "opentelemetry-lwt" {= version}
@@ -32,9 +32,11 @@ build: [
     name
     "-j"
     jobs
+    "--promote-install-files=false"
     "@install"
     "@runtest" {with-test}
     "@doc" {with-doc}
   ]
+  ["dune" "install" "-p" name "--create-install-files" name]
 ]
 dev-repo: "git+https://github.com/imandra-ai/ocaml-opentelemetry.git"

opentelemetry-logs.opam

@@ -12,7 +12,7 @@ license: "MIT"
 homepage: "https://github.com/imandra-ai/ocaml-opentelemetry"
 bug-reports: "https://github.com/imandra-ai/ocaml-opentelemetry/issues"
 depends: [
-  "dune" {>= "3.11"}
+  "dune" {>= "2.9"}
   "ocaml" {>= "4.08"}
   "opentelemetry" {= version}
   "odoc" {with-doc}
@@ -32,9 +32,11 @@ build: [
     name
     "-j"
     jobs
+    "--promote-install-files=false"
     "@install"
     "@runtest" {with-test}
     "@doc" {with-doc}
   ]
+  ["dune" "install" "-p" name "--create-install-files" name]
 ]
 dev-repo: "git+https://github.com/imandra-ai/ocaml-opentelemetry.git"

opentelemetry-lwt.opam

@@ -13,7 +13,7 @@ tags: ["instrumentation" "tracing" "opentelemetry" "datadog" "lwt"]
 homepage: "https://github.com/imandra-ai/ocaml-opentelemetry"
 bug-reports: "https://github.com/imandra-ai/ocaml-opentelemetry/issues"
 depends: [
-  "dune" {>= "3.11"}
+  "dune" {>= "2.9"}
   "ocaml" {>= "4.08"}
   "opentelemetry" {= version}
   "ambient-context-lwt"
@@ -32,9 +32,11 @@ build: [
     name
     "-j"
     jobs
+    "--promote-install-files=false"
     "@install"
     "@runtest" {with-test}
     "@doc" {with-doc}
   ]
+  ["dune" "install" "-p" name "--create-install-files" name]
 ]
 dev-repo: "git+https://github.com/imandra-ai/ocaml-opentelemetry.git"

opentelemetry.opam

@@ -14,7 +14,7 @@ tags: ["instrumentation" "tracing" "opentelemetry" "datadog" "jaeger"]
 homepage: "https://github.com/imandra-ai/ocaml-opentelemetry"
 bug-reports: "https://github.com/imandra-ai/ocaml-opentelemetry/issues"
 depends: [
-  "dune" {>= "3.11"}
+  "dune" {>= "2.9"}
   "ocaml" {>= "4.08"}
   "ptime"
   "hmap"
@@ -26,6 +26,7 @@ depends: [
   "ocaml-lsp-server" {with-dev-setup}
   "ocamlformat" {with-dev-setup & >= "0.27" & < "0.28"}
   "mtime" {>= "1.4"}
+  "dune-build-info"
 ]
 depopts: ["atomic" "trace" "thread-local-storage" "lwt" "eio" "picos"]
 conflicts: [
@@ -40,9 +41,11 @@ build: [
     name
     "-j"
     jobs
+    "--promote-install-files=false"
     "@install"
     "@runtest" {with-test}
     "@doc" {with-doc}
   ]
+  ["dune" "install" "-p" name "--create-install-files" name]
 ]
 dev-repo: "git+https://github.com/imandra-ai/ocaml-opentelemetry.git"

src/client/lwt/dune

@@ -25,19 +25,3 @@
   mtime.clock.os
   lwt.unix)
  (synopsis "Lwt-specific helpers for opentelemetry-client"))
-
-(rule
- (enabled_if
-  (and
-   %{lib-available:lwt}
-   (>= %{version:lwt} 6.0)))
- (action
-  (copy types_.ml.6 types_.ml)))
-
-(rule
- (enabled_if
-  (and
-   %{lib-available:lwt}
-   (< %{version:lwt} 6.0)))
- (action
-  (copy types_.ml.5 types_.ml)))

src/client/lwt/notifier_lwt.ml

@@ -5,7 +5,7 @@ module IO = Io_lwt
 type t = {
   notified: bool Atomic.t;
   cond: unit Lwt_condition.t;
-  notification: Types_.notification;
+  notification: int;
   lwt_tid: int;  (** thread ID where lwt runs *)
   deleted: bool Atomic.t;
 }

src/client/lwt/types_.ml.5

@@ -1,2 +0,0 @@
-
-type notification = int

src/client/lwt/types_.ml.6

@@ -1,2 +0,0 @@
-
-type notification = Lwt_unix.notification

src/lib/dune

@@ -21,6 +21,7 @@
   (re_export opentelemetry.ambient-context)
   (re_export opentelemetry.atomic)
   (re_export hmap)
+  (re_export dune-build-info)
   mtime
   mtime.clock.os
   pbrt

src/lib/version.ml

@@ -1 +1,4 @@
-let version = "%%VERSION%%"
+let version =
+  match Build_info.V1.version () with
+  | None -> "dev"
+  | Some v -> Build_info.V1.Version.to_string v

tests/bin/cohttp_client.ml

@@ -1,6 +1,8 @@
 module OT = Opentelemetry
 module Otel_lwt = Opentelemetry_lwt
 
+let spf = Printf.sprintf
+
 let ( let@ ) f x = f x
 
 let sleep_inner = ref 0.1

tests/bin/emit1.ml

@@ -1,6 +1,8 @@
 module OT = Opentelemetry
 module Atomic = Opentelemetry_atomic.Atomic
 
+let spf = Printf.sprintf
+
 let ( let@ ) = ( @@ )
 
 let sleep_inner = ref 0.1

tests/bin/emit1_cohttp.ml

@@ -2,6 +2,8 @@ module T = Opentelemetry_lwt
 module Atomic = Opentelemetry_atomic.Atomic
 open Lwt.Syntax
 
+let spf = Printf.sprintf
+
 let ( let@ ) f x = f x
 
 let sleep_inner = ref 0.1

tests/bin/emit1_eio.ml

@@ -1,6 +1,8 @@
 module OT = Opentelemetry
 module Atomic = Opentelemetry_atomic.Atomic
 
+let spf = Printf.sprintf
+
 let ( let@ ) f x = f x
 
 let sleep_inner = ref 0.1

tests/bin/emit1_ocurl_lwt.ml

@@ -1,6 +1,8 @@
 module OT = Opentelemetry
 module Atomic = Opentelemetry_atomic.Atomic
 
+let spf = Printf.sprintf
+
 let ( let@ ) = ( @@ )
 
 let sleep_inner = ref 0.1

tests/bin/emit1_stdout.ml

@@ -1,6 +1,8 @@
 module OT = Opentelemetry
 module OTC = Opentelemetry_client
 
+let spf = Printf.sprintf
+
 let ( let@ ) = ( @@ )
 
 let sleep_inner = ref 0.1

tests/client_e2e/test_cohttp_eio_client_e2e.ml

@@ -1,3 +1,5 @@
+module Client = Opentelemetry_client
+module Proto = Opentelemetry.Proto
 open Clients_e2e_lib
 
 (* NOTE: This port must be different from that used by other integration tests,

tests/client_e2e/test_cohttp_lwt_client_e2e.ml

@@ -1,3 +1,5 @@
+module Client = Opentelemetry_client
+module Proto = Opentelemetry.Proto
 open Clients_e2e_lib
 
 (* NOTE: This port must be different from that used by other integration tests,

tests/client_e2e/test_ocurl_client_e2e.ml

@@ -1,3 +1,5 @@
+module Client = Opentelemetry_client
+module Proto = Opentelemetry.Proto
 open Clients_e2e_lib
 
 (* NOTE: This port must be different from that used by other integration tests,

tests/client_e2e/test_ocurl_lwt_client_e2e.ml

@@ -1,3 +1,5 @@
+module Client = Opentelemetry_client
+module Proto = Opentelemetry.Proto
 open Clients_e2e_lib
 
 (* NOTE: This port must be different from that used by other integration tests,

tests/ocurl-lwt/test_urls.ml

@@ -1,3 +1,4 @@
+module OT = Opentelemetry
 module C = Opentelemetry_client_ocurl_lwt
 
 let () =