diff --git a/pkgs/development/tools/ocaml/camlp4/default.nix b/pkgs/development/tools/ocaml/camlp4/default.nix
index 9b28e342de4c..caea5a20711d 100644
--- a/pkgs/development/tools/ocaml/camlp4/default.nix
+++ b/pkgs/development/tools/ocaml/camlp4/default.nix
@@ -9,150 +9,153 @@
   findlib,
 }:
 
-if lib.versionAtLeast ocaml.version "5.5" then
-  throw "camlp4 is not available for OCaml ${ocaml.version}"
-else
-
-  let
-    param =
-      {
-        "4.02" = {
-          version = "4.02+6";
-          sha256 = "06yl4q0qazl7g25b0axd1gdkfd4qpqzs1gr5fkvmkrcbz113h1hj";
-        };
-        "4.03" = {
-          version = "4.03+1";
-          sha256 = "1f2ndch6f1m4fgnxsjb94qbpwjnjgdlya6pard44y6n0dqxi1wsq";
-        };
-        "4.04" = {
-          version = "4.04+1";
-          sha256 = "1ad7rygqjxrc1im95gw9lp8q83nhdaf383f2808f1p63yl42xm7k";
-        };
-        "4.05" = {
-          version = "4.05+1";
-          sha256 = "0wm795hpwvwpib9c9z6p8kw2fh7p7b2hml6g15z8zry3y7w738sv";
-        };
-        "4.06" = {
-          version = "4.06+1";
-          sha256 = "0fazfw2l7wdmbwnqc22xby5n4ri1wz27lw9pfzhsbcdrighykysf";
-        };
-        "4.07" = {
-          version = "4.07+1";
-          sha256 = "0cxl4hkqcvspvkx4f2k83217rh6051fll9i2yz7cw6m3bq57mdvl";
-        };
-        "4.08" = {
-          version = "4.08+1";
-          sha256 = "0qplawvxwai25bi27niw2cgz2al01kcnkj8wxwhxslpi21z6pyx1";
-        };
-        "4.09" = {
-          version = "4.09+1";
-          sha256 = "1gr33x6xs1rs0bpyq4vzyfxd6vn47jfkg8imi81db2r0cbs0kxx1";
-        };
-        "4.10" = {
-          version = "4.10+1";
-          sha256 = "093bc1c28wid5li0jwglnd4p3csxw09fmbs9ffybq2z41a5mgay6";
-        };
-        "4.11" = {
-          version = "4.11+1";
-          sha256 = "0sn7f6im940qh0ixmx1k738xrwwdvy9g7r19bv5218jb6mh0g068";
-        };
-        "4.12" = {
-          version = "4.12+1";
-          sha256 = "1cfk5ppnd511vzsr9gc0grxbafmh0m3m897aij198rppzxps5kyz";
-        };
-        "4.13" = {
-          version = "4.13+1";
-          sha256 = "0fzxa1zdhk74mlxpin7p90flks6sp4gkc0mfclmj9zak15rii55n";
-        };
-        "4.14" = {
-          version = "4.14+1";
-          sha256 = "sha256-cPN3GioZT/Zt6uzbjGUPEGVJcPQdsAnCkU/AQoPfvuo=";
-        };
-        "5.0" = {
-          version = "5.0";
-          sha256 = "sha256-oZptFNPUEAq5YlcqAoDWfLghGMF9AN7E7hUN55SAX+4=";
-        };
-        "5.1" = {
-          version = "5.1";
-          sha256 = "sha256-Ubedjg3BeHA0bJbEalQN9eEk5+LRAI/er+8mWfVYchg=";
-        };
-        "5.2" = {
-          version = "5.2";
-          sha256 = "sha256-lzbc9xsgeYlbVf71O+PWYS14QivAH1aPdnvWhe0HHME=";
-        };
-        "5.3" = {
-          version = "5.3";
-          sha256 = "sha256-V/kKhTP9U4jWDFuQKuB7BS3XICg1lq/2Avj7UJR55+k=";
-        };
-        "5.4" = {
-          version = "5.4";
-          sha256 = "sha256-7FsKEr0cRVF4LIOvROWMyXBefRTBaS66ZqwtP2VLefM=";
-        };
-      }
-      .${ocaml.meta.branch};
-  in
-
-  stdenv.mkDerivation rec {
-    pname = "camlp4";
-    inherit (param) version;
-
-    src = fetchzip {
-      url = "https://github.com/ocaml/camlp4/archive/${version}.tar.gz";
-      inherit (param) sha256;
+let
+  params = {
+    "4.02" = {
+      version = "4.02+6";
+      sha256 = "06yl4q0qazl7g25b0axd1gdkfd4qpqzs1gr5fkvmkrcbz113h1hj";
     };
-
-    strictDeps = true;
-
-    nativeBuildInputs = [
-      which
-      ocaml
-      ocamlbuild
-    ]
-    ++ lib.optionals (lib.versionAtLeast ocaml.version "5.0") [
-      findlib
-    ];
-
-    buildInputs = lib.optionals (lib.versionAtLeast ocaml.version "5.0") [
-      camlp-streams
-      ocamlbuild
-    ];
-
-    # build fails otherwise
-    enableParallelBuilding = false;
-
-    dontAddPrefix = true;
-
-    preConfigure = ''
-      # increase stack space for spacetime variant of the compiler
-      # https://github.com/ocaml/ocaml/issues/7435
-      # but disallowed by darwin sandbox
-      ulimit -s unlimited || true
-
-      configureFlagsArray=(
-        --bindir=$out/bin
-        --libdir=$out/lib/ocaml/${ocaml.version}/site-lib
-        --pkgdir=$out/lib/ocaml/${ocaml.version}/site-lib
-      )
-    '';
-
-    postConfigure = ''
-      substituteInPlace camlp4/META.in \
-      --replace +camlp4 $out/lib/ocaml/${ocaml.version}/site-lib/camlp4
-    '';
-
-    makeFlags = [ "all" ];
-
-    installTargets = [
-      "install"
-      "install-META"
-    ];
-
-    dontStrip = true;
-
-    meta = {
-      description = "Software system for writing extensible parsers for programming languages";
-      homepage = "https://github.com/ocaml/camlp4";
-      platforms = ocaml.meta.platforms or [ ];
-      license = lib.licenses.WITH lib.licenses.lgpl2Only lib.licenses.ocamlLgplLinkingException;
+    "4.03" = {
+      version = "4.03+1";
+      sha256 = "1f2ndch6f1m4fgnxsjb94qbpwjnjgdlya6pard44y6n0dqxi1wsq";
     };
+    "4.04" = {
+      version = "4.04+1";
+      sha256 = "1ad7rygqjxrc1im95gw9lp8q83nhdaf383f2808f1p63yl42xm7k";
+    };
+    "4.05" = {
+      version = "4.05+1";
+      sha256 = "0wm795hpwvwpib9c9z6p8kw2fh7p7b2hml6g15z8zry3y7w738sv";
+    };
+    "4.06" = {
+      version = "4.06+1";
+      sha256 = "0fazfw2l7wdmbwnqc22xby5n4ri1wz27lw9pfzhsbcdrighykysf";
+    };
+    "4.07" = {
+      version = "4.07+1";
+      sha256 = "0cxl4hkqcvspvkx4f2k83217rh6051fll9i2yz7cw6m3bq57mdvl";
+    };
+    "4.08" = {
+      version = "4.08+1";
+      sha256 = "0qplawvxwai25bi27niw2cgz2al01kcnkj8wxwhxslpi21z6pyx1";
+    };
+    "4.09" = {
+      version = "4.09+1";
+      sha256 = "1gr33x6xs1rs0bpyq4vzyfxd6vn47jfkg8imi81db2r0cbs0kxx1";
+    };
+    "4.10" = {
+      version = "4.10+1";
+      sha256 = "093bc1c28wid5li0jwglnd4p3csxw09fmbs9ffybq2z41a5mgay6";
+    };
+    "4.11" = {
+      version = "4.11+1";
+      sha256 = "0sn7f6im940qh0ixmx1k738xrwwdvy9g7r19bv5218jb6mh0g068";
+    };
+    "4.12" = {
+      version = "4.12+1";
+      sha256 = "1cfk5ppnd511vzsr9gc0grxbafmh0m3m897aij198rppzxps5kyz";
+    };
+    "4.13" = {
+      version = "4.13+1";
+      sha256 = "0fzxa1zdhk74mlxpin7p90flks6sp4gkc0mfclmj9zak15rii55n";
+    };
+    "4.14" = {
+      version = "4.14+1";
+      sha256 = "sha256-cPN3GioZT/Zt6uzbjGUPEGVJcPQdsAnCkU/AQoPfvuo=";
+    };
+    "5.0" = {
+      version = "5.0";
+      sha256 = "sha256-oZptFNPUEAq5YlcqAoDWfLghGMF9AN7E7hUN55SAX+4=";
+    };
+    "5.1" = {
+      version = "5.1";
+      sha256 = "sha256-Ubedjg3BeHA0bJbEalQN9eEk5+LRAI/er+8mWfVYchg=";
+    };
+    "5.2" = {
+      version = "5.2";
+      sha256 = "sha256-lzbc9xsgeYlbVf71O+PWYS14QivAH1aPdnvWhe0HHME=";
+    };
+    "5.3" = {
+      version = "5.3";
+      sha256 = "sha256-V/kKhTP9U4jWDFuQKuB7BS3XICg1lq/2Avj7UJR55+k=";
+    };
+    "5.4" = {
+      version = "5.4";
+      sha256 = "sha256-7FsKEr0cRVF4LIOvROWMyXBefRTBaS66ZqwtP2VLefM=";
+    };
+  };
+  param = {
+    # Dummy version to let the `meta` attribute set evaluate
+    version = "";
+    sha256 = lib.fakeSha256;
   }
+  // (params.${ocaml.meta.branch} or {
+  }
+  );
+in
+
+stdenv.mkDerivation rec {
+  pname = "camlp4";
+  inherit (param) version;
+
+  src = fetchzip {
+    url = "https://github.com/ocaml/camlp4/archive/${version}.tar.gz";
+    inherit (param) sha256;
+  };
+
+  strictDeps = true;
+
+  nativeBuildInputs = [
+    which
+    ocaml
+    ocamlbuild
+  ]
+  ++ lib.optionals (lib.versionAtLeast ocaml.version "5.0") [
+    findlib
+  ];
+
+  buildInputs = lib.optionals (lib.versionAtLeast ocaml.version "5.0") [
+    camlp-streams
+    ocamlbuild
+  ];
+
+  # build fails otherwise
+  enableParallelBuilding = false;
+
+  dontAddPrefix = true;
+
+  preConfigure = ''
+    # increase stack space for spacetime variant of the compiler
+    # https://github.com/ocaml/ocaml/issues/7435
+    # but disallowed by darwin sandbox
+    ulimit -s unlimited || true
+
+    configureFlagsArray=(
+      --bindir=$out/bin
+      --libdir=$out/lib/ocaml/${ocaml.version}/site-lib
+      --pkgdir=$out/lib/ocaml/${ocaml.version}/site-lib
+    )
+  '';
+
+  postConfigure = ''
+    substituteInPlace camlp4/META.in \
+    --replace +camlp4 $out/lib/ocaml/${ocaml.version}/site-lib/camlp4
+  '';
+
+  makeFlags = [ "all" ];
+
+  installTargets = [
+    "install"
+    "install-META"
+  ];
+
+  dontStrip = true;
+
+  meta = {
+    description = "Software system for writing extensible parsers for programming languages";
+    homepage = "https://github.com/ocaml/camlp4";
+    platforms = ocaml.meta.platforms;
+    license = lib.licenses.WITH lib.licenses.lgpl2Only lib.licenses.ocamlLgplLinkingException;
+    broken = !(params ? ${ocaml.meta.branch});
+  };
+}