--- /dev/null
+--- a/csexp.opam
++++ b/csexp.opam
+@@ -32,7 +32,6 @@ bug-reports: "https://github.com/ocaml-d
+ depends: [
+ "dune" {>= "1.11"}
+ "ocaml" {>= "4.02.3"}
+- "result" {>= "1.5"}
+ ]
+ dev-repo: "git+https://github.com/ocaml-dune/csexp.git"
+ build: [
+--- a/src/csexp.ml
++++ b/src/csexp.ml
+@@ -102,12 +102,6 @@ end
+ module Make (Sexp : Sexp) = struct
+ open Sexp
+
+- (* This is to keep compatibility with 4.02 without writing [Result.]
+- everywhere *)
+- type ('a, 'b) result = ('a, 'b) Result.result =
+- | Ok of 'a
+- | Error of 'b
+-
+ module Parser = struct
+ exception Parse_error of string
+
+@@ -370,9 +364,9 @@ module Make (Sexp : Sexp) = struct
+
+ module Monad : Monad
+
+- val read_string : t -> int -> (string, string) Result.t Monad.t
++ val read_string : t -> int -> (string, string) result Monad.t
+
+- val read_char : t -> (char, string) Result.t Monad.t
++ val read_char : t -> (char, string) result Monad.t
+ end
+
+ module Make_parser (Input : Input) = struct
+--- a/src/csexp.mli
++++ b/src/csexp.mli
+@@ -34,24 +34,24 @@ module type S = sig
+ [s]. It is an error for [s] to contain a S-expression followed by more
+ data. In case of error, the offset of the error as well as an error
+ message is returned. *)
+- val parse_string : string -> (sexp, int * string) Result.t
++ val parse_string : string -> (sexp, int * string) result
+
+ (** [parse_string s] parses a sequence of S-expressions encoded in canonical
+ form in [s] *)
+- val parse_string_many : string -> (sexp list, int * string) Result.t
++ val parse_string_many : string -> (sexp list, int * string) result
+
+ (** Read exactly one canonical S-expressions from the given channel. Note that
+ this function never raises [End_of_file]. Instead, it returns [Error]. *)
+- val input : in_channel -> (sexp, string) Result.t
++ val input : in_channel -> (sexp, string) result
+
+ (** Same as [input] but returns [Ok None] if the end of file has already been
+ reached. If some more characters are available but the end of file is
+ reached before reading a complete S-expression, this function returns
+ [Error]. *)
+- val input_opt : in_channel -> (sexp option, string) Result.t
++ val input_opt : in_channel -> (sexp option, string) result
+
+ (** Read many S-expressions until the end of input is reached. *)
+- val input_many : in_channel -> (sexp list, string) Result.t
++ val input_many : in_channel -> (sexp list, string) result
+
+ (** {2 Serialising} *)
+
+@@ -353,18 +353,18 @@ module type S = sig
+ val bind : 'a t -> ('a -> 'b t) -> 'b t
+ end
+
+- val read_string : t -> int -> (string, string) Result.t Monad.t
++ val read_string : t -> int -> (string, string) result Monad.t
+
+- val read_char : t -> (char, string) Result.t Monad.t
++ val read_char : t -> (char, string) result Monad.t
+ end
+ [@@deprecated "Use Parser module instead"]
+
+ [@@@warning "-3"]
+
+ module Make_parser (Input : Input) : sig
+- val parse : Input.t -> (sexp, string) Result.t Input.Monad.t
++ val parse : Input.t -> (sexp, string) result Input.Monad.t
+
+- val parse_many : Input.t -> (sexp list, string) Result.t Input.Monad.t
++ val parse_many : Input.t -> (sexp list, string) result Input.Monad.t
+ end
+ [@@deprecated "Use Parser module instead"]
+ end
--- /dev/null
+#
+# Conditional build:
+%bcond_without ocaml_opt # skip building native optimized binaries (bytecode is always built)
+%bcond_with dune # build with dune, this is off due to circular deps
+
+# not yet available on x32 (ocaml 4.02.1), update when upstream will support it
+%ifnarch %{ix86} %{x8664} %{arm} aarch64 ppc sparc sparcv9
+%undefine with_ocaml_opt
+%endif
+
+%if %{without ocaml_opt}
+%define _enable_debug_packages 0
+%endif
+
+%define module csexp
+Summary: Parsing and printing of S-expressions in canonical form
+Name: ocaml-%{module}
+Version: 1.4.0
+Release: 1
+License: MIT
+Source0: https://github.com/ocaml-dune/csexp/releases/download/%{version}/%{module}-%{version}.tbz
+# Source0-md5: d6b5866be24bf8730c127eedca4dc447
+URL: https://github.com/ocaml-dune/csexp
+# Depend on Stdlib.Result instead of ocaml-result.
+Patch0: %{name}-result.patch
+BuildRequires: ocaml >= 4.02.3
+%if %{with dune}
+BuildRequires: ocaml-dune >= 1.11
+BuildRequires: ocaml-odoc
+BuildRequires: ocaml-result-devel >= 1.5
+%endif
+BuildRoot: %{tmpdir}/%{name}-%{version}-root-%(id -u -n)
+
+%description
+This project provides minimal support for parsing and printing
+S-expressions in canonical form, which is a very simple and canonical
+binary encoding of S-expressions.
+
+%package devel
+Summary: Development files for %{name}
+Requires: %{name} = %{version}-%{release}
+%if %{with dune}
+Requires: ocaml-result-devel
+%endif
+
+%description devel
+The %{name}-devel package contains libraries and signature files for
+developing applications that use %{name}.
+
+%prep
+%setup -q -n %{module}-%{version}
+%if %{without dune}
+%patch0 -p1
+%endif
+
+%build
+%if %{with dune}
+dune build %{?_smp_mflags} --display=verbose @install
+dune build %{?_smp_mflags} @doc
+%else
+OFLAGS="-strict-sequence -strict-formats -short-paths -keep-locs -g -opaque"
+OCFLAGS="$OFLAGS -bin-annot"
+cd src
+ocamlc $OCFLAGS -output-obj csexp.mli
+ocamlc $OCFLAGS -a -o csexp.cma csexp.ml
+%if %{with ocaml_opt}
+ocamlopt $OFLAGS -ccopt "%{rpmcflags}" -cclib "%{rpmldflags}" -a \
+ -o csexp.cmxa csexp.ml
+ocamlopt $OFLAGS -ccopt "%{rpmcflags}" -cclib "%{rpmldflags}" -shared \
+ -o csexp.cmxs csexp.ml
+%endif
+%endif
+
+%install
+rm -rf $RPM_BUILD_ROOT
+%if %{with dune}
+dune install --destdir=$RPM_BUILD_ROOT
+
+# We do not want the dune markers
+find _build/default/_doc/_html -name .dune-keep -delete
+
+# We do not want the ml files
+find $RPM_BUILD_ROOT%{_libdir}/ocaml -name \*.ml -delete
+
+# We install the documentation with the doc macro
+rm -fr $RPM_BUILD_ROOT%{_prefix}/doc
+%else
+# Install without dune. See comment at the top.
+install -d $RPM_BUILD_ROOT%{_libdir}/ocaml/%{module}
+cp -p src/csexp.{cma,cmi,cmt,cmti,mli} $RPM_BUILD_ROOT%{_libdir}/ocaml/%{module}
+%if %{with ocaml_opt}
+cp -p src/csexp.{a,cmx,cmxa,cmxs} $RPM_BUILD_ROOT%{_libdir}/ocaml/%{module}
+%endif
+
+cp -p csexp.opam $RPM_BUILD_ROOT%{_libdir}/ocaml/%{module}/opam
+
+cat >> $RPM_BUILD_ROOT%{_libdir}/ocaml/%{module}/META << EOF
+version = "%{version}"
+description = "Parsing and printing of S-expressions in canonical form"
+archive(byte) = "csexp.cma"
+%ifarch %{ocaml_native_compiler}
+archive(native) = "csexp.cmxa"
+%endif
+plugin(byte) = "csexp.cma"
+%ifarch %{ocaml_native_compiler}
+plugin(native) = "csexp.cmxs"
+%endif
+EOF
+
+cat >> $RPM_BUILD_ROOT%{_libdir}/ocaml/%{module}/dune-package << EOF
+(lang dune 2.8)
+(name csexp)
+(version %{version})
+(library
+ (name csexp)
+ (kind normal)
+%if %{with ocaml_opt}
+ (archives (byte csexp.cma) (native csexp.cmxa))
+ (plugins (byte csexp.cma) (native csexp.cmxs))
+ (native_archives csexp.a)
+%else
+ (archives (byte csexp.cma))
+ (plugins (byte csexp.cma))
+%endif
+ (main_module_name Csexp)
+%if %{with ocaml_opt}
+ (modes byte native)
+%else
+ (modes byte)
+%endif
+ (modules
+ (singleton (name Csexp) (obj_name csexp) (visibility public) (impl) (intf))))
+EOF
+%endif
+
+%clean
+rm -rf $RPM_BUILD_ROOT
+
+%files
+%defattr(644,root,root,755)
+%doc README.md
+%doc LICENSE.md
+%dir %{_libdir}/ocaml/%{module}/
+%{_libdir}/ocaml/%{module}/META
+%{_libdir}/ocaml/%{module}/*.cma
+%{_libdir}/ocaml/%{module}/*.cmi
+%if %{with ocaml_opt}
+%{_libdir}/ocaml/%{module}/*.cmxs
+%endif
+
+%files devel
+%defattr(644,root,root,755)
+%{_libdir}/ocaml/%{module}/dune-package
+%{_libdir}/ocaml/%{module}/opam
+%if %{with ocaml_opt}
+%{_libdir}/ocaml/%{module}/*.a
+%{_libdir}/ocaml/%{module}/*.cmx
+%{_libdir}/ocaml/%{module}/*.cmxa
+%endif
+%{_libdir}/ocaml/%{module}/*.cmt
+%{_libdir}/ocaml/%{module}/*.cmti
+%{_libdir}/ocaml/%{module}/*.mli