dune_1: remove

doc/languages-frameworks/ocaml.section.md

@@ -43,12 +43,12 @@ Here is a simple package example.
 
 - It uses the `fetchFromGitHub` fetcher to get its source.
 
-- It also accepts a `duneVersion` parameter (valid values are `"1"`, `"2"`, and
-  `"3"`). The recommended practice is to set it only if you don't want the default
-  value and/or it depends on something else like package version. You might see
-  a not-supported argument `useDune2`. The behavior was `useDune2 = true;` =>
-  `duneVersion = "2";` and `useDune2 = false;` => `duneVersion = "1";`. It was
-  used at the time when dune3 didn't exist.
+- It also accepts a `duneVersion` parameter (valid values are `"2"`, and
+  `"3"`). The recommended practice is to set it only if you don't want the
+  default value and/or it depends on something else like package version. You
+  might see a not-supported argument `useDune2`. The behavior was `useDune2 =
+  true;` => `duneVersion = "2";` and `useDune2 = false;` => `duneVersion =
+  "1";`. It was used at the time when dune3 didn't exist.
 
 - It sets the optional `doCheck` attribute such that tests will be run with
   `dune runtest -p angstrom` after the build (`dune build -p angstrom`) is

pkgs/build-support/ocaml/dune.nix

@@ -3,7 +3,6 @@
   stdenv,
   ocaml,
   findlib,
-  dune_1,
   dune_2,
   dune_3,
 }:
@@ -30,7 +29,7 @@ lib.extendMkDerivation {
           dune-version = args.duneVersion or "3";
         in
         {
-          "1" = dune_1;
+          "1" = throw "Support for dune version 1 has been removed";
           "2" = dune_2;
           "3" = dune_3;
         }

pkgs/development/tools/ocaml/dune/1.nix

@@ -1,43 +0,0 @@
-{
-  stdenv,
-  lib,
-  fetchurl,
-  ocaml,
-  findlib,
-  ncurses,
-}:
-
-stdenv.mkDerivation rec {
-  pname = "dune";
-  version = "1.11.4";
-  src = fetchurl {
-    url = "https://github.com/ocaml/dune/releases/download/${version}/dune-build-info-${version}.tbz";
-    sha256 = "1rkc8lqw30ifjaz8d81la6i8j05ffd0whpxqsbg6dci16945zjvp";
-  };
-
-  nativeBuildInputs = [
-    ocaml
-    findlib
-  ];
-  buildInputs = [ ncurses ];
-  strictDeps = true;
-
-  buildFlags = [ "release" ];
-  makeFlags = [
-    "PREFIX=${placeholder "out"}"
-    "LIBDIR=$(OCAMLFIND_DESTDIR)"
-  ];
-
-  dontAddPrefix = true;
-  dontAddStaticConfigureFlags = true;
-  configurePlatforms = [ ];
-
-  meta = with lib; {
-    homepage = "https://dune.build/";
-    description = "Composable build system";
-    maintainers = [ maintainers.vbgl ];
-    license = licenses.mit;
-    broken = lib.versionOlder ocaml.version "4.02" || lib.versionAtLeast ocaml.version "4.12";
-    inherit (ocaml.meta) platforms;
-  };
-}

pkgs/top-level/aliases.nix

@@ -516,6 +516,7 @@ mapAliases {
   duckstation-bin = duckstation; # Added 2025-09-20
   dumb = throw "'dumb' has been archived by upstream. Upstream recommends libopenmpt as a replacement."; # Added 2025-09-14
   dump1090 = throw "'dump1090' has been renamed to/replaced by 'dump1090-fa'"; # Converted to throw 2025-10-27
+  dune_1 = throw "'dune_1' has been removed"; # Added 2025-11-13
   eask = throw "'eask' has been renamed to/replaced by 'eask-cli'"; # Converted to throw 2025-10-27
   easyloggingpp = throw "easyloggingpp has been removed, as it is deprecated upstream and does not build with CMake 4"; # Added 2025-09-17
   EBTKS = throw "'EBTKS' has been renamed to/replaced by 'ebtks'"; # Converted to throw 2025-10-27

pkgs/top-level/all-packages.nix

@@ -1899,7 +1899,6 @@ with pkgs;
 
   inherit (ocamlPackages) dot-merlin-reader;
 
-  inherit (ocaml-ng.ocamlPackages_4_10) dune_1;
   inherit (ocamlPackages) dune_2 dune_3 dune-release;
 
   dvc = with python3.pkgs; toPythonApplication dvc;

pkgs/top-level/ocaml-packages.nix

@@ -464,8 +464,6 @@ let
 
         dum = callPackage ../development/ocaml-modules/dum { };
 
-        dune_1 = callPackage ../development/tools/ocaml/dune/1.nix { };
-
         dune_2 = callPackage ../development/tools/ocaml/dune/2.nix { };
 
         dune_3 = callPackage ../development/tools/ocaml/dune/3.nix { };