gnu: Add ocaml-sexplib0.

* gnu/packages/ocaml.scm (ocaml-sexplib0): New variable.
(ocaml4.07-sexplib0): Inherit from ocaml-sexplib0.
(janestreet-origin): New variable.

Signed-off-by: Julien Lepiller <julien@lepiller.eu>

gnu/packages/ocaml.scm

@@ -94,6 +94,14 @@ (define (ocaml-forge-uri name version file-number)
                  (number->string file-number) "/" name "-" version
                  ".tar.gz"))
 
+(define (janestreet-origin name version hash)
+  (origin (method url-fetch)
+          (uri (string-append "https://ocaml.janestreet.com/ocaml-core/v"
+                              (version-major+minor version) "/files/"
+                              name "-v" (version-major+minor+point version)
+                              ".tar.gz"))
+          (sha256 (base32 hash))))
+
 (define-public ocaml-4.11
   (package
     (name "ocaml")
@@ -2918,7 +2926,7 @@ (define-public ocaml4.07-uri
        ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)))
     (propagated-inputs
      `(("ocaml-re" ,(package-with-ocaml4.07 ocaml-re))
-       ("ocaml-sexplib0" ,ocaml4.07-sexplib0)
+       ("ocaml-sexplib0" ,(package-with-ocaml4.07 ocaml-sexplib0))
        ("ocaml-stringext" ,(package-with-ocaml4.07 ocaml-stringext))))
     (home-page "https://github.com/mirage/ocaml-uri")
     (synopsis "RFC3986 URI/URL parsing library")
@@ -3649,7 +3657,7 @@ (define-public ocaml4.07-ppx-inline-test
        ("ocaml-migrate-parsetree"
         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
        ("ocaml-compiler-libs" ,ocaml4.07-compiler-libs)
-       ("ocaml-sexplib0" ,ocaml4.07-sexplib0)
+       ("ocaml-sexplib0" ,(package-with-ocaml4.07 ocaml-sexplib0))
        ("ocaml-stdio" ,ocaml4.07-stdio)
        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_inline_test")))
@@ -4028,27 +4036,17 @@ (define-public cubicle
 exclusion algorithms are typical examples of such systems.")
     (license license:asl2.0)))
 
-(define-public ocaml4.07-sexplib0
+(define-public ocaml-sexplib0
   (package
-    (name "ocaml4.07-sexplib0")
-    (version "0.11.0")
+    (name "ocaml-sexplib0")
+    (version "0.14.0")
     (home-page "https://github.com/janestreet/sexplib0")
     (source
-     (origin
-       (method git-fetch)
-       (uri (git-reference
-             (url (string-append home-page ".git"))
-             (commit (string-append "v" version))))
-       (file-name (git-file-name name version))
-       (sha256
-        (base32
-         "07v3ggyss7xhfv14bjk1n87sr42iqwj4cgjiv2lcdfkqk49i2bmi"))))
+     (janestreet-origin "sexplib0" version
+                        "0adrc0r1vvvr41dcpj8jwkzh1dfgqf0mks9xlnnskqfm3a51iavg"))
     (build-system dune-build-system)
-    (arguments
-     `(#:tests? #f ;no tests
-       #:ocaml ,ocaml-4.07
-       #:findlib ,ocaml4.07-findlib
-       #:dune ,ocaml4.07-dune))
+    (arguments `(#:tests? #f)) ;no tests
+    (properties `((ocaml4.07-variant . ,(delay ocaml4.07-sexplib0))))
     (synopsis "Library containing the definition of S-expressions and some
 base converters")
     (description "Part of Jane Street's Core library The Core suite of
@@ -4056,6 +4054,18 @@ (define-public ocaml4.07-sexplib0
 that was developed by Jane Street, the largest industrial user of OCaml.")
     (license license:expat)))
 
+(define-public ocaml4.07-sexplib0
+  (package-with-ocaml4.07
+   (package
+     (inherit ocaml-sexplib0)
+     (name "ocaml-sexplib0")
+     (version "0.11.0")
+     (source
+      (janestreet-origin "sexplib0" version
+                         "1p06p2s7p9xsjn0z9qicniv1ai54d8sj11k8j633di2mm7jzxpin"))
+     (arguments `(#:tests? #f))         ; no tests
+     (properties '()))))
+
 (define-public ocaml4.07-parsexp
   (package
     (name "ocaml4.07-parsexp")
@@ -4077,7 +4087,7 @@ (define-public ocaml4.07-parsexp
        #:findlib ,ocaml4.07-findlib
        #:dune ,ocaml4.07-dune))
     (inputs
-     `(("ocaml-sexplib0" ,ocaml4.07-sexplib0)))
+     `(("ocaml-sexplib0" ,(package-with-ocaml4.07 ocaml-sexplib0))))
     (synopsis "S-expression parsing library")
     (description
      "This library provides generic parsers for parsing S-expressions from
@@ -4129,7 +4139,7 @@ (define-public ocaml4.07-sexplib
     (propagated-inputs
      `(("ocaml-num" ,(package-with-ocaml4.07 ocaml-num))
        ("ocaml-parsexp" ,ocaml4.07-parsexp)
-       ("ocaml-sexplib0" ,ocaml4.07-sexplib0)))
+       ("ocaml-sexplib0" ,(package-with-ocaml4.07 ocaml-sexplib0))))
     (synopsis
      "Library for serializing OCaml values to and from S-expressions")
     (description
@@ -4154,7 +4164,7 @@ (define-public ocaml4.07-base
          "0j6xb4265jr41vw4fjzak6yr8s30qrnzapnc6rl1dxy8bjai0nir"))))
     (build-system dune-build-system)
     (propagated-inputs
-     `(("ocaml-sexplib0" ,ocaml4.07-sexplib0)))
+     `(("ocaml-sexplib0" ,(package-with-ocaml4.07 ocaml-sexplib0))))
     (arguments
      `(#:phases
        (modify-phases %standard-phases
@@ -4225,7 +4235,7 @@ (define-public ocaml4.07-stdio
     (build-system dune-build-system)
     (propagated-inputs
      `(("ocaml-base" ,ocaml4.07-base)
-       ("ocaml-sexplib0" ,ocaml4.07-sexplib0)))
+       ("ocaml-sexplib0" ,(package-with-ocaml4.07 ocaml-sexplib0))))
     (arguments
      `(#:tests? #f ;no tests
        #:ocaml ,ocaml-4.07
@@ -4289,7 +4299,7 @@ (define-public ocaml4.07-ppxlib
        ("ocaml-ppx-derivers" ,(package-with-ocaml4.07 ocaml-ppx-derivers))
        ("ocaml-stdio" ,ocaml4.07-stdio)
        ("ocaml-result" ,(package-with-ocaml4.07 ocaml-result))
-       ("ocaml-sexplib0" ,ocaml4.07-sexplib0)))
+       ("ocaml-sexplib0" ,(package-with-ocaml4.07 ocaml-sexplib0))))
     (arguments
      `(#:phases
        (modify-phases %standard-phases