ocamlPackages.seq: cleanup (#516553)

pkgs/development/ocaml-modules/seq/default.nix

@@ -1,62 +1,28 @@
 {
   stdenv,
   lib,
-  fetchFromGitHub,
   ocaml,
-  findlib,
-  ocamlbuild,
 }:
 
-stdenv.mkDerivation (
-  {
-    version = "0.1";
-    pname = "ocaml${ocaml.version}-seq";
+stdenv.mkDerivation {
+  version = "0.1";
+  pname = "ocaml${ocaml.version}-seq";
 
-    meta = {
-      license = lib.licenses.lgpl21;
-      maintainers = [ lib.maintainers.vbgl ];
-      homepage = "https://github.com/c-cube/seq";
-      inherit (ocaml.meta) platforms;
-    };
+  meta = {
+    license = lib.licenses.lgpl21;
+    maintainers = [ lib.maintainers.vbgl ];
+    homepage = "https://github.com/c-cube/seq";
+    description = "Dummy backward-compatibility package for iterators";
+    inherit (ocaml.meta) platforms;
+  };
 
-  }
-  // (
-    if lib.versionOlder ocaml.version "4.07" then
-      {
+  src = ./src-base;
 
-        src = fetchFromGitHub {
-          owner = "c-cube";
-          repo = "seq";
-          rev = "0.1";
-          sha256 = "1cjpsc7q76yfgq9iyvswxgic4kfq2vcqdlmxjdjgd4lx87zvcwrv";
-        };
+  dontBuild = true;
 
-        nativeBuildInputs = [
-          ocaml
-          findlib
-          ocamlbuild
-        ];
-        strictDeps = true;
+  installPhase = ''
+    mkdir -p $out/lib/ocaml/${ocaml.version}/site-lib/seq
+    cp META $out/lib/ocaml/${ocaml.version}/site-lib/seq
+  '';
 
-        createFindlibDestdir = true;
-
-        meta.description = "Compatibility package for OCaml’s standard iterator type starting from 4.07";
-
-      }
-    else
-      {
-
-        src = ./src-base;
-
-        dontBuild = true;
-
-        installPhase = ''
-          mkdir -p $out/lib/ocaml/${ocaml.version}/site-lib/seq
-          cp META $out/lib/ocaml/${ocaml.version}/site-lib/seq
-        '';
-
-        meta.description = "Dummy backward-compatibility package for iterators";
-
-      }
-  )
-)
+}