From 87858bc526a9d577760f55d05a51cb56630f845b Mon Sep 17 00:00:00 2001
From: Julien Lepiller <julien@lepiller.eu>
Date: Thu, 23 Jan 2020 04:39:52 +0100
Subject: [PATCH] gnu: ocaml: Switch to ocaml 4.09 by default.

Bap and earley cannot be updated as they do not support 4.09 yet. Bap requires
the janestreet packages, which cannot be upgraded as no version supports
4.09 and 4.07 at the same time. Moreover, newer versions of the
janestreet packages have a different dependency graph, which will
require a whole new set of packages. We cannot simply use
package-with-ocaml4.07 on them.

* gnu/packages/ocaml.scm (ocaml-sqlite3, ocaml-ppx-tools, ocaml-gen)
(ocaml-sedlex, ocaml-pcre, ocaml-expect, ocaml-ezjsonm, ocaml-uri)
(ocaml-piqilib, ocaml-piqi, ocaml-charinfo-width, ocaml-zed)
(ocaml-lambda-term, ocaml-utop, ocaml-ppx-inline-test, ocaml-earley)
(ocaml-merlin, ocaml-gsl, ocaml-gsl-1, ocaml-sexplib0, ocaml-parsexp)
(ocaml-sexplib, ocaml-base, ocaml-stdio, ocaml-ppxlib, ocaml-ppx-compare)
(ocaml-fieldslib, ocaml-variantslib, ocaml-ppx-fields-conv)
(ocaml-ppx-sexp-conv, ocaml-ppx-variants-conv, ocaml-ppx-custom-printf)
(ocaml-bin-prot, ocaml-ppx-hash, ocaml-ppx-enumerate, ocaml-ppx-bench)
(ocaml-ppx-here, ocaml-ppx-typerep, ocaml-ppx-sexp-value)
(ocaml-ppx-sexp-message, ocaml-ppx-pipebang, ocaml-ppx-optional)
(ocaml-ppx-optcomp, ocaml-ppx-fail, ocaml-ppx-let, ocaml-ppx-assert)
(ocaml-ppx-expect, ocaml-ppx-js-style, ocaml-ppx-typerep-conv)
(ocaml-ppx-base, ocaml-ppx-bin-prot, ocaml-ppx-jane)
(ocaml-splittable-random, ocaml-configurator, ocaml-spawn, ocaml-core)
(ocaml-core-kernel, ocaml-odoc, ocaml-fftw3, ocaml-lacaml): Rename to ...
(ocaml4.07-sqlite3, ocaml4.07-ppx-tools, ocaml4.07-gen, ocaml4.07-sedlex)
(ocaml4.07-pcre, ocaml4.07-expect, ocaml4.07-ezjsonm, ocaml4.07-uri)
(ocaml4.07-piqilib, ocaml4.07-piqi, ocaml4.07-charinfo-width)
(ocaml4.07-zed, ocaml4.07-lambda-term, ocaml4.07-utop)
(ocaml4.07-ppx-inline-test, ocaml4.07-earley, ocaml4.07-merlin)
(ocaml4.07-gsl, ocaml4.07-gsl-1, ocaml4.07-sexplib0, ocaml4.07-parsexp)
(ocaml4.07-sexplib, ocaml4.07-base, ocaml4.07-stdio, ocaml4.07-ppxlib)
(ocaml4.07-ppx-compare, ocaml4.07-fieldslib, ocaml4.07-variantslib)
(ocaml4.07-ppx-fields-conv, ocaml4.07-ppx-sexp-conv)
(ocaml4.07-ppx-variants-conv, ocaml4.07-ppx-custom-printf)
(ocaml4.07-bin-prot, ocaml4.07-ppx-hash, ocaml4.07-ppx-enumerate)
(ocaml4.07-ppx-bench, ocaml4.07-ppx-here, ocaml4.07-ppx-typerep)
(ocaml4.07-ppx-sexp-value, ocaml4.07-ppx-sexp-message)
(ocaml4.07-ppx-pipebang, ocaml4.07-ppx-optional, ocaml4.07-ppx-optcomp)
(ocaml4.07-ppx-fail, ocaml4.07-ppx-let, ocaml4.07-ppx-assert)
(ocaml4.07-ppx-expect, ocaml4.07-ppx-js-style)
(ocaml4.07-ppx-typerep-conv, ocaml4.07-ppx-base, ocaml4.07-ppx-bin-prot)
(ocaml4.07-ppx-jane, ocaml4.07-splittable-random)
(ocaml4.07-configurator, ocaml4.07-spawn, ocaml4.07-core)
(ocaml4.07-core-kernel, ocaml4.07-odoc, ocaml4.07-fftw3)
(ocaml4.07-lacaml): ... to this and use ocaml 4.07.
(bap, unison): Use ocaml-4.07.
* gnu/packages/bioinformatics.scm (pplacer): Use ocaml-4.07.
---
 gnu/packages/bioinformatics.scm |   22 +-
 gnu/packages/ocaml.scm          | 1049 ++++++++++++++++++-------------
 2 files changed, 626 insertions(+), 445 deletions(-)

diff --git a/gnu/packages/bioinformatics.scm b/gnu/packages/bioinformatics.scm
index e8dac2a12b..c71adbe98c 100644
--- a/gnu/packages/bioinformatics.scm
+++ b/gnu/packages/bioinformatics.scm
@@ -14626,21 +14626,23 @@ (define-public pplacer
                (let* ((out (assoc-ref outputs "out"))
                       (bin (string-append out "/bin")))
                  (copy-recursively "bin" bin))
-               #t)))))
+               #t)))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
       (inputs
        `(("zlib" ,zlib "static")
          ("gsl" ,gsl)
-         ("ocaml-ounit" ,ocaml-ounit)
-         ("ocaml-batteries" ,ocaml-batteries)
-         ("ocaml-camlzip" ,camlzip)
-         ("ocaml-csv" ,ocaml-csv)
-         ("ocaml-sqlite3" ,ocaml-sqlite3)
-         ("ocaml-xmlm" ,ocaml-xmlm)
-         ("ocaml-mcl" ,ocaml-mcl)
-         ("ocaml-gsl" ,ocaml-gsl-1)))
+         ("ocaml-ounit" ,(package-with-ocaml4.07 ocaml-ounit))
+         ("ocaml-batteries" ,(package-with-ocaml4.07 ocaml-batteries))
+         ("ocaml-camlzip" ,(package-with-ocaml4.07 camlzip))
+         ("ocaml-csv" ,(package-with-ocaml4.07 ocaml-csv))
+         ("ocaml-sqlite3" ,ocaml4.07-sqlite3)
+         ("ocaml-xmlm" ,(package-with-ocaml4.07 ocaml-xmlm))
+         ("ocaml-mcl" ,(package-with-ocaml4.07 ocaml-mcl))
+         ("ocaml-gsl" ,ocaml4.07-gsl-1)))
       (native-inputs
        `(("cddlib-src" ,(package-source cddlib))
-         ("ocamlbuild" ,ocamlbuild)
+         ("ocamlbuild" ,(package-with-ocaml4.07 ocamlbuild))
          ("pkg-config" ,pkg-config)))
       (propagated-inputs
        `(("pplacer-scripts" ,pplacer-scripts)))
diff --git a/gnu/packages/ocaml.scm b/gnu/packages/ocaml.scm
index f56658e253..df998af1f5 100644
--- a/gnu/packages/ocaml.scm
+++ b/gnu/packages/ocaml.scm
@@ -228,7 +228,7 @@ (define-public ocaml-4.07
                           "--prefix" out
                           "--mandir" mandir))))))))))
 
-(define-public ocaml ocaml-4.07)
+(define-public ocaml ocaml-4.09)
 
 (define-public ocamlbuild
   (package
@@ -852,7 +852,7 @@ (define-public unison
     (outputs '("out"
                "doc"))                  ; 1.9 MiB of documentation
     (native-inputs
-     `(("ocaml" ,ocaml)
+     `(("ocaml" ,ocaml-4.07)
        ;; For documentation
        ("ghostscript" ,ghostscript)
        ("texlive" ,texlive-tiny)
@@ -1444,9 +1444,9 @@ (define-public ocaml-rresult
 library.")
     (license license:isc)))
 
-(define-public ocaml-sqlite3
+(define-public ocaml4.07-sqlite3
   (package
-    (name "ocaml-sqlite3")
+    (name "ocaml4.07-sqlite3")
     (version "4.4.1")
     (source
      (origin
@@ -1459,9 +1459,12 @@ (define-public ocaml-sqlite3
         (base32
          "1536agm5fgcqysszhpd3kmw7lkc5n5ni7gmlyglrbvmnmrwf3av2"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (native-inputs
-     `(("ocaml-base" ,ocaml-base)
-       ("ocaml-stdio" ,ocaml-stdio)
+     `(("ocaml-base" ,ocaml4.07-base)
+       ("ocaml-stdio" ,ocaml4.07-stdio)
        ("pkg-config" ,pkg-config)))
     (inputs
      `(("sqlite" ,sqlite)))
@@ -1671,9 +1674,9 @@ (define-public ocaml-alcotest
 simple (yet expressive) query language to select the tests to run.")
     (license license:isc)))
 
-(define-public ocaml-ppx-tools
+(define-public ocaml4.07-ppx-tools
   (package
-    (name "ocaml-ppx-tools")
+    (name "ocaml4.07-ppx-tools")
     (version "5.1+4.06.0")
     (source
      (origin
@@ -1687,7 +1690,9 @@ (define-public ocaml-ppx-tools
     (build-system ocaml-build-system)
     (arguments
      `(#:phases (modify-phases %standard-phases (delete 'configure))
-       #:tests? #f))
+       #:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (properties `((upstream-name . "ppx_tools")))
     (home-page "https://github.com/alainfrisch/ppx_tools")
     (synopsis "Tools for authors of ppx rewriters and other syntactic tools")
@@ -1987,9 +1992,9 @@ (define-public ocaml-xmlm
 representation of the data.")
     (license license:isc)))
 
-(define-public ocaml-gen
+(define-public ocaml4.07-gen
   (package
-    (name "ocaml-gen")
+    (name "ocaml4.07-gen")
     (version "0.5.2")
     (source (origin
               (method git-fetch)
@@ -2003,21 +2008,23 @@ (define-public ocaml-gen
     (build-system dune-build-system)
     (arguments
      `(#:tests? #f; no tests
-       #:package "gen"))
+       #:package "gen"
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-     `(("ocaml-odoc" ,ocaml-odoc)))
+     `(("ocaml-odoc" ,ocaml4.07-odoc)))
     (native-inputs
-     `(("ocaml-qtest" ,ocaml-qtest)
-       ("ocaml-qcheck" ,ocaml-qcheck)))
+     `(("ocaml-qtest" ,(package-with-ocaml4.07 ocaml-qtest))
+       ("ocaml-qcheck" ,(package-with-ocaml4.07 ocaml-qcheck))))
     (home-page "https://github.com/c-cube/gen/")
     (synopsis "Iterators for OCaml, both restartable and consumable")
     (description "Gen implements iterators of OCaml, that are both restartable
 and consumable.")
     (license license:bsd-2)))
 
-(define-public ocaml-sedlex
+(define-public ocaml4.07-sedlex
   (package
-    (name "ocaml-sedlex")
+    (name "ocaml4.07-sedlex")
     (version "2.1")
     (source (origin
               (method git-fetch)
@@ -2046,13 +2053,16 @@ (define-public ocaml-sedlex
          (add-before 'build 'chmod
            (lambda _
              (for-each (lambda (file) (chmod file #o644)) (find-files "." ".*"))
-             #t)))))
+             #t)))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (native-inputs
-     `(("ocamlbuild" ,ocamlbuild)))
+     `(("ocamlbuild" ,(package-with-ocaml4.07 ocamlbuild))))
     (propagated-inputs
-     `(("ocaml-gen" ,ocaml-gen)
-       ("ocaml-ppx-tools-versioned" ,ocaml-ppx-tools-versioned)
-       ("ocaml-uchar" ,ocaml-uchar)))
+     `(("ocaml-gen" ,ocaml4.07-gen)
+       ("ocaml-ppx-tools-versioned"
+        ,(package-with-ocaml4.07 ocaml-ppx-tools-versioned))
+       ("ocaml-uchar" ,(package-with-ocaml4.07 ocaml-uchar))))
     ;; These three files are needed by src/generator/data/dune, but would be
     ;; downloaded using curl at build time.
     (inputs
@@ -2358,9 +2368,9 @@ (define-public ocaml-batteries
 hierarchy of modules.")
     (license license:lgpl2.1+)))
 
-(define-public ocaml-pcre
+(define-public ocaml4.07-pcre
   (package
-    (name "ocaml-pcre")
+    (name "ocaml4.07-pcre")
     (version "7.4.1")
     (source (origin
               (method git-fetch)
@@ -2373,9 +2383,12 @@ (define-public ocaml-pcre
                 "11sd8g668h48790lamz0riw9jgnfkaif5qdfa0akcndwa6aj07jf"))))
     (build-system dune-build-system)
     (arguments
-     `(#:test-target "."))
+     `(#:test-target "."
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib
+       #:dune ,ocaml4.07-dune))
     (native-inputs
-     `(("ocaml-base" ,ocaml-base)
+     `(("ocaml-base" ,ocaml4.07-base)
        ("pcre:bin" ,pcre "bin")))
     (propagated-inputs `(("pcre" ,pcre)))
     (home-page "https://mmottl.github.io/pcre-ocaml")
@@ -2385,9 +2398,9 @@ (define-public ocaml-pcre
 language.")
     (license license:lgpl2.1+))); with the OCaml link exception
 
-(define-public ocaml-expect
+(define-public ocaml4.07-expect
   (package
-    (name "ocaml-expect")
+    (name "ocaml4.07-expect")
     (version "0.0.6")
     (source (origin
               (method url-fetch)
@@ -2396,14 +2409,17 @@ (define-public ocaml-expect
                (base32
                 "098qvg9d4yrqzr5ax291y3whrpax0m3sx4gi6is0mblc96r9yqk0"))))
     (arguments
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (build-system ocaml-build-system)
     (native-inputs
-     `(("ocamlbuild" ,ocamlbuild)
-       ("ocaml-num" ,ocaml-num)
-       ("ocaml-pcre" ,ocaml-pcre)
-       ("ounit" ,ocaml-ounit)))
-    (propagated-inputs `(("batteries" ,ocaml-batteries)))
+     `(("ocamlbuild" ,(package-with-ocaml4.07 ocamlbuild))
+       ("ocaml-num" ,(package-with-ocaml4.07 ocaml-num))
+       ("ocaml-pcre" ,ocaml4.07-pcre)
+       ("ounit" ,(package-with-ocaml4.07 ocaml-ounit))))
+    (propagated-inputs
+     `(("batteries" ,(package-with-ocaml4.07 ocaml-batteries))))
     (home-page "https://forge.ocamlcore.org/projects/ocaml-expect/")
     (synopsis "Simple implementation of expect")
     (description "Help building unitary testing of interactive program.  You
@@ -2712,9 +2728,9 @@ (define-public ocaml-hex
     (description "Hex is a minimal library providing hexadecimal converters.")
     (license license:isc)))
 
-(define-public ocaml-ezjsonm
+(define-public ocaml4.07-ezjsonm
   (package
-    (name "ocaml-ezjsonm")
+    (name "ocaml4.07-ezjsonm")
     (version "1.1.0")
     (source
      (origin
@@ -2728,13 +2744,15 @@ (define-public ocaml-ezjsonm
     (build-system dune-build-system)
     (arguments
      `(#:package "ezjsonm"
-       #:test-target "."))
+       #:test-target "."
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (native-inputs
-     `(("ocaml-alcotest" ,ocaml-alcotest)))
+     `(("ocaml-alcotest" ,(package-with-ocaml4.07 ocaml-alcotest))))
     (propagated-inputs
-     `(("ocaml-hex" ,ocaml-hex)
-       ("ocaml-jsonm" ,ocaml-jsonm)
-       ("ocaml-sexplib" ,ocaml-sexplib)))
+     `(("ocaml-hex" ,(package-with-ocaml4.07 ocaml-hex))
+       ("ocaml-jsonm" ,(package-with-ocaml4.07 ocaml-jsonm))
+       ("ocaml-sexplib" ,ocaml4.07-sexplib)))
     (home-page "https://github.com/mirage/ezjsonm/")
     (synopsis "Read and write JSON data")
     (description "Ezjsonm provides more convenient (but far less flexible) input
@@ -2743,9 +2761,9 @@ (define-public ocaml-ezjsonm
 JSON.")
     (license license:isc)))
 
-(define-public ocaml-uri
+(define-public ocaml4.07-uri
   (package
-    (name "ocaml-uri")
+    (name "ocaml4.07-uri")
     (version "2.2.0")
     (source
      (origin
@@ -2764,14 +2782,16 @@ (define-public ocaml-uri
          (add-before 'build 'update-deprecated
            (lambda _
              (substitute* "lib/uri.ml"
-               (("Re.get") "Re.Group.get")))))))
+               (("Re.get") "Re.Group.get")))))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (native-inputs
-     `(("ocaml-ounit" ,ocaml-ounit)
-       ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)))
+     `(("ocaml-ounit" ,(package-with-ocaml4.07 ocaml-ounit))
+       ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)))
     (propagated-inputs
-     `(("ocaml-re" ,ocaml-re)
-       ("ocaml-sexplib0" ,ocaml-sexplib0)
-       ("ocaml-stringext" ,ocaml-stringext)))
+     `(("ocaml-re" ,(package-with-ocaml4.07 ocaml-re))
+       ("ocaml-sexplib0" ,ocaml4.07-sexplib0)
+       ("ocaml-stringext" ,(package-with-ocaml4.07 ocaml-stringext))))
     (home-page "https://github.com/mirage/ocaml-uri")
     (synopsis "RFC3986 URI/URL parsing library")
     (description "OCaml-uri is a library for parsing URI/URL in the RFC3986 format.")
@@ -2808,9 +2828,9 @@ (define-public ocaml-easy-format
 Format module of the OCaml standard library.")
     (license license:bsd-3)))
 
-(define-public ocaml-piqilib
+(define-public ocaml4.07-piqilib
   (package
-    (name "ocaml-piqilib")
+    (name "ocaml4.07-piqilib")
     (version "0.6.15")
     (source
      (origin
@@ -2854,14 +2874,16 @@ (define-public ocaml-piqilib
              (mkdir-p stubs)
              (symlink (string-append lib "/dllpiqilib_stubs.so")
                       (string-append stubs "/dllpiqilib_stubs.so"))
-             #t))))))
+             #t))))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (native-inputs
      `(("which" ,which)))
     (propagated-inputs
-     `(("ocaml-xmlm" ,ocaml-xmlm)
-       ("ocaml-sedlex" ,ocaml-sedlex)
-       ("ocaml-easy-format" ,ocaml-easy-format)
-       ("ocaml-base64" ,ocaml-base64)))
+     `(("ocaml-xmlm" ,(package-with-ocaml4.07 ocaml-xmlm))
+       ("ocaml-sedlex" ,ocaml4.07-sedlex)
+       ("ocaml-easy-format" ,(package-with-ocaml4.07 ocaml-easy-format))
+       ("ocaml-base64" ,(package-with-ocaml4.07 ocaml-base64))))
     (home-page "http://piqi.org")
     (synopsis "Data serialization and conversion library")
     (description "Piqilib is the common library used by the piqi command-line
@@ -2927,9 +2949,9 @@ (define-public ocaml-graph
     (description "OCamlgraph is a generic graph library for OCaml.")
     (license license:lgpl2.1)))
 
-(define-public ocaml-piqi
+(define-public ocaml4.07-piqi
   (package
-    (name "ocaml-piqi")
+    (name "ocaml4.07-piqi")
     (version "0.7.7")
     (source (origin
               (method url-fetch)
@@ -2947,14 +2969,16 @@ (define-public ocaml-piqi
                             "/bin/sh"))
        #:phases
        (modify-phases %standard-phases
-         (delete 'configure))))
+         (delete 'configure))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (native-inputs
      `(("which" ,which)
        ("protobuf" ,protobuf))) ; for tests
     (propagated-inputs
-     `(("ocaml-num" ,ocaml-num)
-       ("ocaml-piqilib" ,ocaml-piqilib)
-       ("ocaml-stdlib-shims" ,ocaml-stdlib-shims)))
+     `(("ocaml-num" ,(package-with-ocaml4.07 ocaml-num))
+       ("ocaml-piqilib" ,ocaml4.07-piqilib)
+       ("ocaml-stdlib-shims" ,(package-with-ocaml4.07 ocaml-stdlib-shims))))
     (home-page "https://github.com/alavrik/piqi-ocaml")
     (synopsis "Protocol serialization system for OCaml")
     (description "Piqi is a multi-format data serialization system for OCaml.
@@ -2978,24 +3002,24 @@ (define-public bap
                 "0ryf2xb37pj2f9mc3p5prqgqrylph9qgq7q9jnbx8b03nzzpa6h6"))))
    (build-system ocaml-build-system)
    (native-inputs
-    `(("ocaml-oasis" ,ocaml-oasis)
+    `(("ocaml-oasis" ,(package-with-ocaml4.07 ocaml-oasis))
       ("clang" ,clang-3.8)
-      ("ocaml-ounit" ,ocaml-ounit)))
+      ("ocaml-ounit" ,(package-with-ocaml4.07 ocaml-ounit))))
    (propagated-inputs
-    `(("camlzip" ,camlzip)
-      ("ocaml-bitstring" ,ocaml-bitstring)
-      ("ocaml-cmdliner" ,ocaml-cmdliner)
-      ("ocaml-core-kernel" ,ocaml-core-kernel)
-      ("ocaml-ezjsonm" ,ocaml-ezjsonm)
-      ("ocaml-fileutils" ,ocaml-fileutils)
-      ("ocaml-frontc" ,ocaml-frontc)
-      ("ocaml-graph" ,ocaml-graph)
-      ("ocaml-ocurl" ,ocaml-ocurl)
-      ("ocaml-piqi" ,ocaml-piqi)
-      ("ocaml-ppx-jane" ,ocaml-ppx-jane)
-      ("ocaml-uuidm" ,ocaml-uuidm)
-      ("ocaml-uri" ,ocaml-uri)
-      ("ocaml-zarith" ,ocaml-zarith)))
+    `(("camlzip" ,(package-with-ocaml4.07 camlzip))
+      ("ocaml-bitstring" ,(package-with-ocaml4.07 ocaml-bitstring))
+      ("ocaml-cmdliner" ,(package-with-ocaml4.07 ocaml-cmdliner))
+      ("ocaml-core-kernel" ,ocaml4.07-core-kernel)
+      ("ocaml-ezjsonm" ,ocaml4.07-ezjsonm)
+      ("ocaml-fileutils" ,(package-with-ocaml4.07 ocaml-fileutils))
+      ("ocaml-frontc" ,(package-with-ocaml4.07 ocaml-frontc))
+      ("ocaml-graph" ,(package-with-ocaml4.07 ocaml-graph))
+      ("ocaml-ocurl" ,(package-with-ocaml4.07 ocaml-ocurl))
+      ("ocaml-piqi" ,ocaml4.07-piqi)
+      ("ocaml-ppx-jane" ,ocaml4.07-ppx-jane)
+      ("ocaml-uuidm" ,(package-with-ocaml4.07 ocaml-uuidm))
+      ("ocaml-uri" ,ocaml4.07-uri)
+      ("ocaml-zarith" ,(package-with-ocaml4.07 ocaml-zarith))))
    (inputs
     `(("llvm" ,llvm-3.8)
       ("gmp" ,gmp)))
@@ -3019,7 +3043,9 @@ (define-public bap
                       "/lib/ocaml/site-lib")
                     "--with-llvm-version=3.8"
                     "--with-llvm-config=llvm-config"
-                    "--enable-everything"))))))
+                    "--enable-everything"))))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
    (synopsis "Binary Analysis Platform")
    (description "Binary Analysis Platform is a framework for writing program
 analysis tools, that target binary files.  The framework consists of a plethora
@@ -3059,9 +3085,9 @@ (define-public ocaml-camomile
     ;; with an exception for linked libraries to use a different license
     (license license:lgpl2.0+)))
 
-(define-public ocaml-charinfo-width
+(define-public ocaml4.07-charinfo-width
   (package
-    (name "ocaml-charinfo-width")
+    (name "ocaml4.07-charinfo-width")
     (version "1.1.0")
     (source (origin
               (method url-fetch)
@@ -3072,11 +3098,14 @@ (define-public ocaml-charinfo-width
                (base32
                 "00bv4p1yqs8y0z4z07wd9w9yyv669dikp9b04dcjbwpiy2wy0086"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-     `(("ocaml-result" ,ocaml-result)
-       ("ocaml-camomile" ,ocaml-camomile)))
+     `(("ocaml-result" ,(package-with-ocaml4.07 ocaml-result))
+       ("ocaml-camomile" ,(package-with-ocaml4.07 ocaml-camomile))))
     (native-inputs
-     `(("ocaml-ppx-expect" ,ocaml-ppx-expect)))
+     `(("ocaml-ppx-expect" ,ocaml4.07-ppx-expect)))
     (properties
      `((upstream-name . "charInfo_width")))
     (home-page "https://bitbucket.org/zandoye/charinfo_width/")
@@ -3085,9 +3114,9 @@ (define-public ocaml-charinfo-width
 function that follows the prototype of POSIX's wcwidth.")
     (license license:expat)))
 
-(define-public ocaml-zed
+(define-public ocaml4.07-zed
   (package
-    (name "ocaml-zed")
+    (name "ocaml4.07-zed")
     (version "2.0.3")
     (source
      (origin
@@ -3101,11 +3130,13 @@ (define-public ocaml-zed
     (build-system dune-build-system)
     (arguments
      `(#:jbuild? #t
-       #:test-target "."))
+       #:test-target "."
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-     `(("ocaml-camomile" ,ocaml-camomile)
-       ("ocaml-charinfo-width" ,ocaml-charinfo-width)
-       ("ocaml-react" ,ocaml-react)))
+     `(("ocaml-camomile" ,(package-with-ocaml4.07 ocaml-camomile))
+       ("ocaml-charinfo-width" ,ocaml4.07-charinfo-width)
+       ("ocaml-react" ,(package-with-ocaml4.07 ocaml-react))))
     (home-page "https://github.com/diml/zed")
     (synopsis "Abstract engine for text editing in OCaml")
     (description "Zed is an abstract engine for text edition.  It can be used
@@ -3113,9 +3144,9 @@ (define-public ocaml-zed
 connect an engine to your inputs and rendering functions to get an editor.")
     (license license:bsd-3)))
 
-(define-public ocaml-lambda-term
+(define-public ocaml4.07-lambda-term
   (package
-    (name "ocaml-lambda-term")
+    (name "ocaml4.07-lambda-term")
     (version "2.0.2")
     (source
      (origin
@@ -3129,12 +3160,14 @@ (define-public ocaml-lambda-term
     (build-system dune-build-system)
     (arguments
      `(#:build-flags (list "--profile" "release")
-       #:tests? #f))
+       #:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-     `(("ocaml-lwt" ,ocaml-lwt)
-       ("ocaml-lwt-log" ,ocaml-lwt-log)
-       ("ocaml-lwt-react" ,ocaml-lwt-react)
-       ("ocaml-zed" ,ocaml-zed)))
+     `(("ocaml-lwt" ,(package-with-ocaml4.07 ocaml-lwt))
+       ("ocaml-lwt-log" ,(package-with-ocaml4.07 ocaml-lwt-log))
+       ("ocaml-lwt-react" ,(package-with-ocaml4.07 ocaml-lwt-react))
+       ("ocaml-zed" ,ocaml4.07-zed)))
     (inputs
      `(("libev" ,libev)))
     (home-page "https://github.com/diml/lambda-term")
@@ -3147,9 +3180,9 @@ (define-public ocaml-lambda-term
 instead of bindings to a C library.")
     (license license:bsd-3)))
 
-(define-public ocaml-utop
+(define-public ocaml4.07-utop
   (package
-    (name "ocaml-utop")
+    (name "ocaml4.07-utop")
     (version "2.4.3")
     (source
      (origin
@@ -3163,15 +3196,17 @@ (define-public ocaml-utop
     (build-system dune-build-system)
     (arguments
      `(#:jbuild? #t
-       #:test-target "."))
+       #:test-target "."
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (native-inputs
-     `(("cppo" ,ocaml-cppo)))
+     `(("cppo" ,(package-with-ocaml4.07 ocaml-cppo))))
     (propagated-inputs
-     `(("lambda-term" ,ocaml-lambda-term)
-       ("lwt" ,ocaml-lwt)
-       ("react" ,ocaml-react)
-       ("camomile" ,ocaml-camomile)
-       ("zed" ,ocaml-zed)))
+     `(("lambda-term" ,ocaml4.07-lambda-term)
+       ("lwt" ,(package-with-ocaml4.07 ocaml-lwt))
+       ("react" ,(package-with-ocaml4.07 ocaml-react))
+       ("camomile" ,(package-with-ocaml4.07 ocaml-camomile))
+       ("zed" ,ocaml4.07-zed)))
     (home-page "https://github.com/ocaml-community/utop")
     (synopsis "Improved interface to the OCaml toplevel")
     (description "UTop is an improved toplevel for OCaml.  It can run in a
@@ -3437,9 +3472,9 @@ (define-public emacs-flycheck-dedukti
 syntax checking on dedukti files.")
       (license license:cecill-b))))
 
-(define-public ocaml-ppx-inline-test
+(define-public ocaml4.07-ppx-inline-test
   (package
-    (name "ocaml-ppx-inline-test")
+    (name "ocaml4.07-ppx-inline-test")
     (version "0.12.0")
     (home-page "https://github.com/janestreet/ppx_inline_test")
     (source
@@ -3455,14 +3490,17 @@ (define-public ocaml-ppx-inline-test
     (build-system dune-build-system)
     (arguments
      ;see home page README for further information
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (inputs
-     `(("ocaml-base" ,ocaml-base)
-       ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-       ("ocaml-compiler-libs" ,ocaml-compiler-libs)
-       ("ocaml-sexplib0" ,ocaml-sexplib0)
-       ("ocaml-stdio" ,ocaml-stdio)
-       ("ocaml-ppxlib" ,ocaml-ppxlib)))
+     `(("ocaml-base" ,ocaml4.07-base)
+       ("ocaml-migrate-parsetree"
+        ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+       ("ocaml-compiler-libs" ,(package-with-ocaml4.07 ocaml-compiler-libs))
+       ("ocaml-sexplib0" ,ocaml4.07-sexplib0)
+       ("ocaml-stdio" ,ocaml4.07-stdio)
+       ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_inline_test")))
     (synopsis "Syntax extension for writing in-line tests in ocaml code")
     (description "This package contains a syntax extension for writing
@@ -3508,9 +3546,9 @@ (define-public ocaml-bindlib
 or quantified formulas.")
     (license license:gpl3+)))
 
-(define-public ocaml-earley
+(define-public ocaml4.07-earley
   (package
-    (name "ocaml-earley")
+    (name "ocaml4.07-earley")
     (version "2.0.0")
     (home-page "https://github.com/rlepigre/ocaml-earley")
     (source
@@ -3525,7 +3563,9 @@ (define-public ocaml-earley
          "18k7bi7krc4bvqnhijz1q0pfr0nfahghfjifci8rh1q4i5zd0xz5"))))
     (build-system dune-build-system)
     (arguments
-     `(#:test-target "."))
+     `(#:test-target "."
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (synopsis "Parsing library based on Earley Algorithm")
     (description "Earley is a parser combinator library base on Earley's
 algorithm.  It is intended to be used in conjunction with an OCaml syntax
@@ -3675,9 +3715,9 @@ (define-public ocaml-craml
 format}.  @code{craml} is released as a single binary (called @code{craml}).")
     (license license:isc)))
 
-(define-public ocaml-merlin
+(define-public ocaml4.07-merlin
   (package
-    (name "ocaml-merlin")
+    (name "ocaml4.07-merlin")
     (version "3.2.2")
     (home-page "https://ocaml.github.io/merlin/")
     (source
@@ -3692,14 +3732,16 @@ (define-public ocaml-merlin
          "15ssgmwdxylbwhld9p1cq8x6kadxyhll5bfyf11dddj6cldna3hb"))))
     (build-system dune-build-system)
     (inputs
-     `(("ocaml-biniou" ,ocaml-biniou)
-       ("ocaml-yojson" ,ocaml-yojson)
-       ("ocaml-easy-format" ,ocaml-easy-format)))
+     `(("ocaml-biniou" ,(package-with-ocaml4.07 ocaml-biniou))
+       ("ocaml-yojson" ,(package-with-ocaml4.07 ocaml-yojson))
+       ("ocaml-easy-format" ,(package-with-ocaml4.07 ocaml-easy-format))))
     (native-inputs
      `(("ocaml-findlib" ,ocaml-findlib)))
     (arguments
-     '(#:jbuild? #t
-       #:tests? #f)) ;; Errors in tests in version 3.2.2
+     `(#:jbuild? #t
+       #:tests? #f ;; Errors in tests in version 3.2.2
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (synopsis "Context sensitive completion for OCaml in Vim and Emacs")
     (description "Merlin is an editor service that provides modern IDE
 features for OCaml.  Emacs and Vim support is provided out-of-the-box.
@@ -3707,9 +3749,9 @@ (define-public ocaml-merlin
 Atom.")
     (license license:expat)))
 
-(define-public ocaml-gsl
+(define-public ocaml4.07-gsl
   (package
-    (name "ocaml-gsl")
+    (name "ocaml4.07-gsl")
     (version "1.24.0")
     (source
      (origin
@@ -3730,12 +3772,15 @@ (define-public ocaml-gsl
            (lambda* (#:key inputs #:allow-other-keys)
              (substitute* "src/config/discover.ml"
                (("/usr") (assoc-ref inputs "gsl")))
-             #t)))))
+             #t)))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib
+       #:dune ,ocaml4.07-dune))
     (inputs
      `(("gsl" ,gsl)))
     (propagated-inputs
-     `(("ocaml-base" ,ocaml-base)
-       ("ocaml-stdio" ,ocaml-stdio)))
+     `(("ocaml-base" ,ocaml4.07-base)
+       ("ocaml-stdio" ,ocaml4.07-stdio)))
     (home-page "https://mmottl.github.io/gsl-ocaml")
     (synopsis "Bindings to the GNU Scientific Library")
     (description
@@ -3743,9 +3788,9 @@ (define-public ocaml-gsl
 the OCaml language.")
     (license license:gpl3+)))
 
-(define-public ocaml-gsl-1
+(define-public ocaml4.07-gsl-1
   (package
-    (inherit ocaml-gsl)
+    (inherit ocaml4.07-gsl)
     (version "1.19.3")
     (source (origin
               (method url-fetch)
@@ -3759,8 +3804,10 @@ (define-public ocaml-gsl-1
     (inputs
      `(("gsl" ,gsl)))
     (native-inputs
-     `(("ocamlbuild" ,ocamlbuild)))
-    (arguments '())
+     `(("ocamlbuild" ,(package-with-ocaml4.07 ocamlbuild))))
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs '())))
 
 (define-public cubicle
@@ -3821,9 +3868,9 @@ (define-public cubicle
 exclusion algorithms are typical examples of such systems.")
     (license license:asl2.0)))
 
-(define-public ocaml-sexplib0
+(define-public ocaml4.07-sexplib0
   (package
-    (name "ocaml-sexplib0")
+    (name "ocaml4.07-sexplib0")
     (version "0.11.0")
     (home-page "https://github.com/janestreet/sexplib0")
     (source
@@ -3838,7 +3885,9 @@ (define-public ocaml-sexplib0
          "07v3ggyss7xhfv14bjk1n87sr42iqwj4cgjiv2lcdfkqk49i2bmi"))))
     (build-system dune-build-system)
     (arguments
-     '(#:tests? #f)) ;no tests
+     `(#:tests? #f ;no tests
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (synopsis "Library containing the definition of S-expressions and some
 base converters")
     (description "Part of Jane Street's Core library The Core suite of
@@ -3846,9 +3895,9 @@ (define-public ocaml-sexplib0
 that was developed by Jane Street, the largest industrial user of OCaml.")
 (license license:expat)))
 
-(define-public ocaml-parsexp
+(define-public ocaml4.07-parsexp
   (package
-    (name "ocaml-parsexp")
+    (name "ocaml4.07-parsexp")
     (version "0.11.0")
     (home-page "https://github.com/janestreet/parsexp")
     (source
@@ -3862,8 +3911,11 @@ (define-public ocaml-parsexp
         (base32
          "1nyq23s5igd8cf3n4qxprjvhbmb6ighb3fy5mw7hxl0mdgsw5fvz"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (inputs
-     `(("ocaml-sexplib0" ,ocaml-sexplib0)))
+     `(("ocaml-sexplib0" ,ocaml4.07-sexplib0)))
     (synopsis "S-expression parsing library")
     (description
      "This library provides generic parsers for parsing S-expressions from
@@ -3892,9 +3944,9 @@ (define-public ocaml-parsexp
 parsexp_io.")
     (license license:expat)))
 
-(define-public ocaml-sexplib
+(define-public ocaml4.07-sexplib
   (package
-    (name "ocaml-sexplib")
+    (name "ocaml4.07-sexplib")
     (version "0.11.0")
     (home-page "https://github.com/janestreet/sexplib")
     (source
@@ -3908,10 +3960,13 @@ (define-public ocaml-sexplib
         (base32
          "1qfl0m04rpcjvc4yw1hzh6r16jpwmap0sa9ax6zjji67dz4szpyb"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-     `(("ocaml-num" ,ocaml-num)
-       ("ocaml-parsexp" ,ocaml-parsexp)
-       ("ocaml-sexplib0" ,ocaml-sexplib0)))
+     `(("ocaml-num" ,(package-with-ocaml4.07 ocaml-num))
+       ("ocaml-parsexp" ,ocaml4.07-parsexp)
+       ("ocaml-sexplib0" ,ocaml4.07-sexplib0)))
     (synopsis
      "Library for serializing OCaml values to and from S-expressions")
     (description
@@ -3919,9 +3974,9 @@ (define-public ocaml-sexplib
 functionality for parsing and pretty-printing s-expressions.")
     (license license:expat)))
 
-(define-public ocaml-base
+(define-public ocaml4.07-base
   (package
-    (name "ocaml-base")
+    (name "ocaml4.07-base")
     (version "0.11.1")
     (home-page "https://github.com/janestreet/base")
     (source
@@ -3936,14 +3991,16 @@ (define-public ocaml-base
          "0j6xb4265jr41vw4fjzak6yr8s30qrnzapnc6rl1dxy8bjai0nir"))))
     (build-system dune-build-system)
     (propagated-inputs
-     `(("ocaml-sexplib0" ,ocaml-sexplib0)))
+     `(("ocaml-sexplib0" ,ocaml4.07-sexplib0)))
     (arguments
      `(#:phases
        (modify-phases %standard-phases
          (replace 'build
            ;; make warnings non fatal (jbuilder behaviour)
            (lambda _
-             (invoke "dune" "build" "@install" "--profile=release"))))))
+             (invoke "dune" "build" "@install" "--profile=release"))))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
   (synopsis
     "Full standard library replacement for OCaml")
   (description
@@ -3983,9 +4040,9 @@ (define-public ocaml-compiler-libs
 is now @code{Ocaml_common.Ast_helper}.")
     (license license:expat)))
 
-(define-public ocaml-stdio
+(define-public ocaml4.07-stdio
   (package
-    (name "ocaml-stdio")
+    (name "ocaml4.07-stdio")
     (version "0.11.0")
     (home-page "https://github.com/janestreet/stdio")
     (source
@@ -4000,10 +4057,12 @@ (define-public ocaml-stdio
          "1facajqhvq34g2wrg368y0ajxd6lrj5b3lyzyj0jhdmraxajjcwn"))))
     (build-system dune-build-system)
     (propagated-inputs
-     `(("ocaml-base" ,ocaml-base)
-       ("ocaml-sexplib0" ,ocaml-sexplib0)))
+     `(("ocaml-base" ,ocaml4.07-base)
+       ("ocaml-sexplib0" ,ocaml4.07-sexplib0)))
     (arguments
-     '(#:tests? #f)) ;no tests
+     `(#:tests? #f ;no tests
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (synopsis "Standard IO library for OCaml")
     (description
      "Stdio implements simple input/output functionalities for OCaml.  It
@@ -4038,9 +4097,9 @@ (define-public ocaml-ppx-derivers
 as part of the same ocaml-migrate-parsetree driver.")
     (license license:bsd-3)))
 
-(define-public ocaml-ppxlib
+(define-public ocaml4.07-ppxlib
   (package
-    (name "ocaml-ppxlib")
+    (name "ocaml4.07-ppxlib")
     (version "0.6.0")
     (home-page "https://github.com/ocaml-ppx/ppxlib")
     (source
@@ -4055,15 +4114,16 @@ (define-public ocaml-ppxlib
          "0my9x7sxb329h0lzshppdaawiyfbaw6g5f41yiy7bhl071rnlvbv"))))
     (build-system dune-build-system)
     (propagated-inputs
-     `(("ocaml-base" ,ocaml-base)
-       ("ocaml-compiler-libs" ,ocaml-compiler-libs)
-       ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-       ("ocaml-ppx-derivers" ,ocaml-ppx-derivers)
-       ("ocaml-stdio" ,ocaml-stdio)
-       ("ocaml-result" ,ocaml-result)
-       ("ocaml-sexplib0" ,ocaml-sexplib0)))
+     `(("ocaml-base" ,ocaml4.07-base)
+       ("ocaml-compiler-libs" ,(package-with-ocaml4.07 ocaml-compiler-libs))
+       ("ocaml-migrate-parsetree"
+        ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+       ("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)))
     (arguments
-     '(#:phases
+     `(#:phases
        (modify-phases %standard-phases
          (add-before 'check 'set-topfind
            (lambda* (#:key inputs #:allow-other-keys)
@@ -4081,7 +4141,9 @@ (define-public ocaml-ppxlib
                  (("#use \"topfind\";;" all)
                   (string-append "#directory \"" findlib-libdir "\"\n"
                                  all))))
-             #t)))))
+             #t)))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (synopsis
      "Base library and tools for ppx rewriters")
     (description
@@ -4099,9 +4161,9 @@ (define-public ocaml-ppxlib
 @end itemize")
     (license license:expat)))
 
-(define-public ocaml-ppx-compare
+(define-public ocaml4.07-ppx-compare
   (package
-    (name "ocaml-ppx-compare")
+    (name "ocaml4.07-ppx-compare")
     (version "0.11.1")
     (source (origin
               (method git-fetch)
@@ -4114,9 +4176,13 @@ (define-public ocaml-ppx-compare
                 "06bq4m1bsm4jlx4g7wh5m99qky7xm4c2g52kaz6pv25hdn5agi2m"))))
     (build-system dune-build-system)
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (properties `((upstream-name . "ppx_compare")))
     (home-page "https://github.com/janestreet/ppx_compare")
     (synopsis "Generation of comparison functions from types")
@@ -4128,9 +4194,9 @@ (define-public ocaml-ppx-compare
 by making sure that you only compare comparable values.")
     (license license:asl2.0)))
 
-(define-public ocaml-fieldslib
+(define-public ocaml4.07-fieldslib
   (package
-    (name "ocaml-fieldslib")
+    (name "ocaml4.07-fieldslib")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4143,11 +4209,14 @@ (define-public ocaml-fieldslib
     (build-system dune-build-system)
     (arguments
      ;; No tests
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "fieldslib")))
     (home-page "https://github.com/janestreet/fieldslib")
     (synopsis "Syntax extension to record fields")
@@ -4156,9 +4225,9 @@ (define-public ocaml-fieldslib
 of a record and create new record values.")
     (license license:asl2.0)))
 
-(define-public ocaml-variantslib
+(define-public ocaml4.07-variantslib
   (package
-    (name "ocaml-variantslib")
+    (name "ocaml4.07-variantslib")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4171,11 +4240,14 @@ (define-public ocaml-variantslib
     (build-system dune-build-system)
     (arguments
      ;; No tests
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "variantslib")))
     (home-page "https://github.com/janestreet/variantslib")
     (synopsis "OCaml variants as first class values")
@@ -4183,9 +4255,9 @@ (define-public ocaml-variantslib
 standard library.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-fields-conv
+(define-public ocaml4.07-ppx-fields-conv
   (package
-    (name "ocaml-ppx-fields-conv")
+    (name "ocaml4.07-ppx-fields-conv")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4197,10 +4269,14 @@ (define-public ocaml-ppx-fields-conv
                 "07zrd3qky2ppbfl55gpm90rvqa5860xgwcsvihrjmkrw6d0jirkc"))))
     (build-system dune-build-system)
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-fieldslib" ,ocaml-fieldslib)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-fieldslib" ,ocaml4.07-fieldslib)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (properties `((upstream-name . "ppx_fields_conv")))
     (home-page "https://github.com/janestreet/ppx_fields_conv")
     (synopsis "Generation of accessor and iteration functions for ocaml records")
@@ -4210,9 +4286,9 @@ (define-public ocaml-ppx-fields-conv
 new record values.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-sexp-conv
+(define-public ocaml4.07-ppx-sexp-conv
   (package
-    (name "ocaml-ppx-sexp-conv")
+    (name "ocaml4.07-ppx-sexp-conv")
     (version "0.11.2")
     (source (origin
               (method git-fetch)
@@ -4225,9 +4301,13 @@ (define-public ocaml-ppx-sexp-conv
                 "0pqwnqy1xp309wvdcaax4lg02yk64lq2w03mbgfvf6ps5ry4gis9"))))
     (build-system dune-build-system)
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (properties `((upstream-name . "ppx_sexp_conv")))
     (home-page "https://github.com/janestreet/ppx_sexp_conv")
     (synopsis "Generation of S-expression conversion functions from type definitions")
@@ -4235,9 +4315,9 @@ (define-public ocaml-ppx-sexp-conv
 definitions.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-variants-conv
+(define-public ocaml4.07-ppx-variants-conv
   (package
-    (name "ocaml-ppx-variants-conv")
+    (name "ocaml4.07-ppx-variants-conv")
     (version "0.11.1")
     (source (origin
               (method git-fetch)
@@ -4250,10 +4330,14 @@ (define-public ocaml-ppx-variants-conv
                 "1yc0gsds5m2nv39zga8nnrca2n75rkqy5dz4xj1635ybz20hhbjd"))))
     (build-system dune-build-system)
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-variantslib" ,ocaml-variantslib)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-variantslib" ,ocaml4.07-variantslib)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (properties
       `((upstream-name . "ppx_variants_conv")))
     (home-page
@@ -4264,9 +4348,9 @@ (define-public ocaml-ppx-variants-conv
 variant types.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-custom-printf
+(define-public ocaml4.07-ppx-custom-printf
   (package
-    (name "ocaml-ppx-custom-printf")
+    (name "ocaml4.07-ppx-custom-printf")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4278,10 +4362,14 @@ (define-public ocaml-ppx-custom-printf
                 "11b73smf3g3bpd9lg014pr4rx285nk9mnk6g6464ph51jv0sqzhj"))))
     (build-system dune-build-system)
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (properties `((upstream-name . "ppx_custom_printf")))
     (home-page "https://github.com/janestreet/ppx_custom_printf")
     (synopsis "Printf-style format-strings for user-defined string conversion")
@@ -4289,9 +4377,9 @@ (define-public ocaml-ppx-custom-printf
 string conversion.")
     (license license:asl2.0)))
 
-(define-public ocaml-bin-prot
+(define-public ocaml4.07-bin-prot
   (package
-    (name "ocaml-bin-prot")
+    (name "ocaml4.07-bin-prot")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4303,13 +4391,17 @@ (define-public ocaml-bin-prot
                 "1rsd91gx36prj4whi76nsiz1bzpgal9nzyw3pxdz1alv4ilk2il6"))))
     (build-system dune-build-system)
     (inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-ppx-compare" ,ocaml-ppx-compare)
-        ("ocaml-ppx-custom-printf" ,ocaml-ppx-custom-printf)
-        ("ocaml-ppx-fields-conv" ,ocaml-ppx-fields-conv)
-        ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)
-        ("ocaml-ppx-variants-conv" ,ocaml-ppx-variants-conv)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-ppx-compare" ,ocaml4.07-ppx-compare)
+        ("ocaml-ppx-custom-printf" ,ocaml4.07-ppx-custom-printf)
+        ("ocaml-ppx-fields-conv" ,ocaml4.07-ppx-fields-conv)
+        ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)
+        ("ocaml-ppx-variants-conv" ,ocaml4.07-ppx-variants-conv)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))))
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (properties `((upstream-name . "bin_prot")))
     (home-page "https://github.com/janestreet/bin_prot")
     (synopsis "Binary protocol generator")
@@ -4343,9 +4435,9 @@ (define-public ocaml-octavius
     (description "Octavius is a library to parse the `ocamldoc` comment syntax.")
     (license license:isc)))
 
-(define-public ocaml-ppx-hash
+(define-public ocaml4.07-ppx-hash
   (package
-    (name "ocaml-ppx-hash")
+    (name "ocaml4.07-ppx-hash")
     (version "0.11.1")
     (source (origin
               (method git-fetch)
@@ -4358,11 +4450,15 @@ (define-public ocaml-ppx-hash
                 "1p0ic6aijxlrdggpmycj12q3cy9xksbq2vq727215maz4snvlf5p"))))
     (build-system dune-build-system)
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-ppx-compare" ,ocaml-ppx-compare)
-        ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-ppx-compare" ,ocaml4.07-ppx-compare)
+        ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (properties `((upstream-name . "ppx_hash")))
     (home-page "https://github.com/janestreet/ppx_hash")
     (synopsis "Generation of hash functions from type expressions and definitions")
@@ -4370,9 +4466,9 @@ (define-public ocaml-ppx-hash
 hash functions from type exrpessions and definitions.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-enumerate
+(define-public ocaml4.07-ppx-enumerate
   (package
-    (name "ocaml-ppx-enumerate")
+    (name "ocaml4.07-ppx-enumerate")
     (version "0.11.1")
     (source (origin
               (method git-fetch)
@@ -4385,11 +4481,14 @@ (define-public ocaml-ppx-enumerate
                 "0spx9k1v7vjjb6sigbfs69yndgq76v114jhxvzjmffw7q989cyhr"))))
     (build-system dune-build-system)
     (arguments
-     `(#:tests? #f))                    ; no test suite
+     `(#:tests? #f; no test suite
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_enumerate")))
     (home-page "https://github.com/janestreet/ppx_enumerate")
     (synopsis "Generate a list containing all values of a finite type")
@@ -4398,9 +4497,9 @@ (define-public ocaml-ppx-enumerate
 many values).")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-bench
+(define-public ocaml4.07-ppx-bench
   (package
-    (name "ocaml-ppx-bench")
+    (name "ocaml4.07-ppx-bench")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4413,20 +4512,23 @@ (define-public ocaml-ppx-bench
     (build-system dune-build-system)
     (arguments
      ;; No tests
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-ppx-inline-test" ,ocaml-ppx-inline-test)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-ppx-inline-test" ,ocaml4.07-ppx-inline-test)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_bench")))
     (home-page "https://github.com/janestreet/ppx_bench")
     (synopsis "Syntax extension for writing in-line benchmarks in ocaml code")
     (description "Syntax extension for writing in-line benchmarks in ocaml code.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-here
+(define-public ocaml4.07-ppx-here
   (package
-    (name "ocaml-ppx-here")
+    (name "ocaml4.07-ppx-here")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4439,11 +4541,14 @@ (define-public ocaml-ppx-here
     (build-system dune-build-system)
     (arguments
      ;; broken tests
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_here")))
     (home-page "https://github.com/janestreet/ppx_here")
     (synopsis "Expands [%here] into its location")
@@ -4451,9 +4556,9 @@ (define-public ocaml-ppx-here
       "Part of the Jane Street's PPX rewriters collection.")
     (license license:asl2.0)))
 
-(define-public ocaml-typerep
+(define-public ocaml4.07-typerep
   (package
-    (name "ocaml-typerep")
+    (name "ocaml4.07-typerep")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4465,16 +4570,18 @@ (define-public ocaml-typerep
                 "1zi7hy0prpgzqhr4lkacr04wvlvbp21jfbdfvffhrm6cd400rb5v"))))
     (build-system dune-build-system)
     (arguments
-     `(#:tests? #f))
-    (propagated-inputs `(("ocaml-base" ,ocaml-base)))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
+    (propagated-inputs `(("ocaml-base" ,ocaml4.07-base)))
     (home-page "https://github.com/janestreet/typerep")
     (synopsis "Typerep is a library for runtime types")
     (description "Typerep is a library for runtime types.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-sexp-value
+(define-public ocaml4.07-ppx-sexp-value
   (package
-    (name "ocaml-ppx-sexp-value")
+    (name "ocaml4.07-ppx-sexp-value")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4485,12 +4592,16 @@ (define-public ocaml-ppx-sexp-value
                (base32
                 "1xnalfrln6k5khsyxvxkg6v32q8fpr4cqamsjqfih29jdv486xrs"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-ppx-here" ,ocaml-ppx-here)
-        ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-ppx-here" ,ocaml4.07-ppx-here)
+        ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_sexp_value")))
     (home-page "https://github.com/janestreet/ppx_sexp_value")
     (synopsis "Simplify building s-expressions from ocaml values")
@@ -4498,9 +4609,9 @@ (define-public ocaml-ppx-sexp-value
 ocaml values.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-sexp-message
+(define-public ocaml4.07-ppx-sexp-message
   (package
-    (name "ocaml-ppx-sexp-message")
+    (name "ocaml4.07-ppx-sexp-message")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4511,12 +4622,16 @@ (define-public ocaml-ppx-sexp-message
                (base32
                 "1yh440za0w9cvrbxbmqacir8715kdaw6sw24ys9xj80av9nqpiw7"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-ppx-here" ,ocaml-ppx-here)
-        ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-ppx-here" ,ocaml4.07-ppx-here)
+        ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_sexp_message")))
     (home-page "https://github.com/janestreet/ppx_sexp_message")
     (synopsis "A ppx rewriter for easy construction of s-expressions")
@@ -4526,9 +4641,9 @@ (define-public ocaml-ppx-sexp-message
 context such as function arguments.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-pipebang
+(define-public ocaml4.07-ppx-pipebang
   (package
-    (name "ocaml-ppx-pipebang")
+    (name "ocaml4.07-ppx-pipebang")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4541,10 +4656,13 @@ (define-public ocaml-ppx-pipebang
     (build-system dune-build-system)
     (arguments
      ;; No tests
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_pipebang")))
     (home-page "https://github.com/janestreet/ppx_pipebang")
     (synopsis "Inline reverse application operators `|>` and `|!`")
@@ -4552,9 +4670,9 @@ (define-public ocaml-ppx-pipebang
 @code{|>} and @code{|!}.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-optional
+(define-public ocaml4.07-ppx-optional
   (package
-    (name "ocaml-ppx-optional")
+    (name "ocaml4.07-ppx-optional")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4567,11 +4685,14 @@ (define-public ocaml-ppx-optional
     (build-system dune-build-system)
     (arguments
      ;; No tests
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_optional")))
     (home-page "https://github.com/janestreet/ppx_optional")
     (synopsis "Pattern matching on flat options")
@@ -4580,9 +4701,9 @@ (define-public ocaml-ppx-optional
 else expression.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-optcomp
+(define-public ocaml4.07-ppx-optcomp
   (package
-    (name "ocaml-ppx-optcomp")
+    (name "ocaml4.07-ppx-optcomp")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4593,10 +4714,13 @@ (define-public ocaml-ppx-optcomp
                (base32
                 "1bb52p2j2h4s9f06vrcpla80rj93jinnzq6jzilapyx9q068929i"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-stdio" ,ocaml-stdio)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-stdio" ,ocaml4.07-stdio)
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_optcomp")))
     (home-page "https://github.com/janestreet/ppx_optcomp")
     (synopsis "Optional compilation for OCaml")
@@ -4605,9 +4729,9 @@ (define-public ocaml-ppx-optcomp
 size, the version of the compiler, ...")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-let
+(define-public ocaml4.07-ppx-let
   (package
-    (name "ocaml-ppx-let")
+    (name "ocaml4.07-ppx-let")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4618,10 +4742,14 @@ (define-public ocaml-ppx-let
                (base32
                 "1wdfw6w4xbg97a35yg6bif9gggxniy9ddnrjfw1a0inkl2yamxkj"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_let")))
     (home-page "https://github.com/janestreet/ppx_let")
     (synopsis "Monadic let-bindings")
@@ -4629,9 +4757,9 @@ (define-public ocaml-ppx-let
 match expressions, and if expressions.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-fail
+(define-public ocaml4.07-ppx-fail
   (package
-    (name "ocaml-ppx-fail")
+    (name "ocaml4.07-ppx-fail")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4642,11 +4770,15 @@ (define-public ocaml-ppx-fail
                (base32
                 "07plqsvljiwvngggfypwq55g46s5my55y45mvlmalrxyppzr03s8"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-ppx-here" ,ocaml-ppx-here)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-ppx-here" ,ocaml4.07-ppx-here)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_fail")))
     (home-page "https://github.com/janestreet/ppx_fail")
     (synopsis "Add location to calls to failwiths")
@@ -4654,9 +4786,9 @@ (define-public ocaml-ppx-fail
 position.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-assert
+(define-public ocaml4.07-ppx-assert
   (package
-    (name "ocaml-ppx-assert")
+    (name "ocaml4.07-ppx-assert")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4667,13 +4799,17 @@ (define-public ocaml-ppx-assert
                (base32
                 "17kd311n0l9f72gblf9kv8i5rghr106w37x4f0m5qwh6nlgl0j9k"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-ppx-compare" ,ocaml-ppx-compare)
-        ("ocaml-ppx-here" ,ocaml-ppx-here)
-        ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-ppx-compare" ,ocaml4.07-ppx-compare)
+        ("ocaml-ppx-here" ,ocaml4.07-ppx-here)
+        ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_assert")))
     (home-page "https://github.com/janestreet/ppx_assert")
     (synopsis "Assert-like extension nodes that raise useful errors on failure")
@@ -4681,9 +4817,9 @@ (define-public ocaml-ppx-assert
 useful errors on failure.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-expect
+(define-public ocaml4.07-ppx-expect
   (package
-    (name "ocaml-ppx-expect")
+    (name "ocaml4.07-ppx-expect")
     (version "0.12.0")
     (source (origin
               (method git-fetch)
@@ -4696,21 +4832,24 @@ (define-public ocaml-ppx-expect
                 "1wawsbjfkri4sw52n8xqrzihxc3xfpdicv3ahz83a1rsn4lb8j5q"))))
     (build-system dune-build-system)
     (arguments
-     `(#:jbuild? #t))
+     `(#:jbuild? #t
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-ppx-assert" ,ocaml-ppx-assert)
-        ("ocaml-ppx-compare" ,ocaml-ppx-compare)
-        ("ocaml-ppx-custom-printf" ,ocaml-ppx-custom-printf)
-        ("ocaml-ppx-fields-conv" ,ocaml-ppx-fields-conv)
-        ("ocaml-ppx-here" ,ocaml-ppx-here)
-        ("ocaml-ppx-inline-test" ,ocaml-ppx-inline-test)
-        ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)
-        ("ocaml-ppx-variants-conv" ,ocaml-ppx-variants-conv)
-        ("ocaml-stdio" ,ocaml-stdio)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)
-        ("ocaml-re" ,ocaml-re)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-ppx-assert" ,ocaml4.07-ppx-assert)
+        ("ocaml-ppx-compare" ,ocaml4.07-ppx-compare)
+        ("ocaml-ppx-custom-printf" ,ocaml4.07-ppx-custom-printf)
+        ("ocaml-ppx-fields-conv" ,ocaml4.07-ppx-fields-conv)
+        ("ocaml-ppx-here" ,ocaml4.07-ppx-here)
+        ("ocaml-ppx-inline-test" ,ocaml4.07-ppx-inline-test)
+        ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)
+        ("ocaml-ppx-variants-conv" ,ocaml4.07-ppx-variants-conv)
+        ("ocaml-stdio" ,ocaml4.07-stdio)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)
+        ("ocaml-re" ,(package-with-ocaml4.07 ocaml-re))))
     (properties `((upstream-name . "ppx_expect")))
     (home-page "https://github.com/janestreet/ppx_expect")
     (synopsis "Cram like framework for OCaml")
@@ -4721,9 +4860,9 @@ (define-public ocaml-ppx-expect
 to denote the expected output.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-js-style
+(define-public ocaml4.07-ppx-js-style
   (package
-    (name "ocaml-ppx-js-style")
+    (name "ocaml4.07-ppx-js-style")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4736,12 +4875,15 @@ (define-public ocaml-ppx-js-style
     (build-system dune-build-system)
     (arguments
      ;; No tests
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-octavius" ,ocaml-octavius)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-octavius" ,(package-with-ocaml4.07 ocaml-octavius))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_js_style")))
     (home-page "https://github.com/janestreet/ppx_js_style")
     (synopsis "Code style checker for Jane Street Packages")
@@ -4750,9 +4892,9 @@ (define-public ocaml-ppx-js-style
 packages.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-typerep-conv
+(define-public ocaml4.07-ppx-typerep-conv
   (package
-    (name "ocaml-ppx-typerep-conv")
+    (name "ocaml4.07-ppx-typerep-conv")
     (version "0.11.1")
     (source (origin
               (method git-fetch)
@@ -4765,12 +4907,15 @@ (define-public ocaml-ppx-typerep-conv
                 "0a13dpfrrg0rsm8qni1bh7pqcda30l70z8r6yzi5a64bmwk7g5ah"))))
     (build-system dune-build-system)
     (arguments
-     `(#:test-target "."))
+     `(#:test-target "."
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-typerep" ,ocaml-typerep)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-typerep" ,ocaml4.07-typerep)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_typerep_conv")))
     (home-page "https://github.com/janestreet/ppx_typerep_conv")
     (synopsis "Generation of runtime types from type declarations")
@@ -4778,9 +4923,9 @@ (define-public ocaml-ppx-typerep-conv
 from type definitions.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-base
+(define-public ocaml4.07-ppx-base
   (package
-    (name "ocaml-ppx-base")
+    (name "ocaml4.07-ppx-base")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4792,15 +4937,18 @@ (define-public ocaml-ppx-base
                 "0aq206pg330jmj7lhcagiiwm3a0b3gsqm801m8ajd4ysyw7idkym"))))
     (build-system dune-build-system)
     (arguments
-     `(#:test-target "."))
+     `(#:test-target "."
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-ppx-compare" ,ocaml-ppx-compare)
-        ("ocaml-ppx-enumerate" ,ocaml-ppx-enumerate)
-        ("ocaml-ppx-hash" ,ocaml-ppx-hash)
-        ("ocaml-ppx-js-style" ,ocaml-ppx-js-style)
-        ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-ppx-compare" ,ocaml4.07-ppx-compare)
+        ("ocaml-ppx-enumerate" ,ocaml4.07-ppx-enumerate)
+        ("ocaml-ppx-hash" ,ocaml4.07-ppx-hash)
+        ("ocaml-ppx-js-style" ,ocaml4.07-ppx-js-style)
+        ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_base")))
     (home-page "https://github.com/janestreet/ppx_base")
     (synopsis "Base set of ppx rewriters")
@@ -4810,9 +4958,9 @@ (define-public ocaml-ppx-base
 verification tool.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-bin-prot
+(define-public ocaml4.07-ppx-bin-prot
   (package
-    (name "ocaml-ppx-bin-prot")
+    (name "ocaml4.07-ppx-bin-prot")
     (version "0.11.1")
     (source (origin
               (method git-fetch)
@@ -4826,13 +4974,16 @@ (define-public ocaml-ppx-bin-prot
     (build-system dune-build-system)
     (arguments
      ;; Cyclic dependency with ocaml-ppx-jane
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-bin-prot" ,ocaml-bin-prot)
-        ("ocaml-ppx-here" ,ocaml-ppx-here)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-bin-prot" ,ocaml4.07-bin-prot)
+        ("ocaml-ppx-here" ,ocaml4.07-ppx-here)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_bin_prot")))
     (home-page "https://github.com/janestreet/ppx_bin_prot")
     (synopsis "Generation of bin_prot readers and writers from types")
@@ -4840,9 +4991,9 @@ (define-public ocaml-ppx-bin-prot
 functions from type definitions.")
     (license license:asl2.0)))
 
-(define-public ocaml-ppx-jane
+(define-public ocaml4.07-ppx-jane
   (package
-    (name "ocaml-ppx-jane")
+    (name "ocaml4.07-ppx-jane")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4854,28 +5005,31 @@ (define-public ocaml-ppx-jane
                 "0lgppkw3aixrfnixihrsz2ipafv8fpvkdpy3pw8n0r615gg8x8la"))))
     (build-system dune-build-system)
     (arguments
-     `(#:test-target "."))
+     `(#:test-target "."
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-ppx-assert" ,ocaml-ppx-assert)
-        ("ocaml-ppx-base" ,ocaml-ppx-base)
-        ("ocaml-ppx-bench" ,ocaml-ppx-bench)
-        ("ocaml-ppx-bin-prot" ,ocaml-ppx-bin-prot)
-        ("ocaml-ppx-custom-printf" ,ocaml-ppx-custom-printf)
-        ("ocaml-ppx-expect" ,ocaml-ppx-expect)
-        ("ocaml-ppx-fail" ,ocaml-ppx-fail)
-        ("ocaml-ppx-fields-conv" ,ocaml-ppx-fields-conv)
-        ("ocaml-ppx-here" ,ocaml-ppx-here)
-        ("ocaml-ppx-inline-test" ,ocaml-ppx-inline-test)
-        ("ocaml-ppx-let" ,ocaml-ppx-let)
-        ("ocaml-ppx-optcomp" ,ocaml-ppx-optcomp)
-        ("ocaml-ppx-optional" ,ocaml-ppx-optional)
-        ("ocaml-ppx-pipebang" ,ocaml-ppx-pipebang)
-        ("ocaml-ppx-sexp-message" ,ocaml-ppx-sexp-message)
-        ("ocaml-ppx-sexp-value" ,ocaml-ppx-sexp-value)
-        ("ocaml-ppx-typerep-conv" ,ocaml-ppx-typerep-conv)
-        ("ocaml-ppx-variants-conv" ,ocaml-ppx-variants-conv)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-ppx-assert" ,ocaml4.07-ppx-assert)
+        ("ocaml-ppx-base" ,ocaml4.07-ppx-base)
+        ("ocaml-ppx-bench" ,ocaml4.07-ppx-bench)
+        ("ocaml-ppx-bin-prot" ,ocaml4.07-ppx-bin-prot)
+        ("ocaml-ppx-custom-printf" ,ocaml4.07-ppx-custom-printf)
+        ("ocaml-ppx-expect" ,ocaml4.07-ppx-expect)
+        ("ocaml-ppx-fail" ,ocaml4.07-ppx-fail)
+        ("ocaml-ppx-fields-conv" ,ocaml4.07-ppx-fields-conv)
+        ("ocaml-ppx-here" ,ocaml4.07-ppx-here)
+        ("ocaml-ppx-inline-test" ,ocaml4.07-ppx-inline-test)
+        ("ocaml-ppx-let" ,ocaml4.07-ppx-let)
+        ("ocaml-ppx-optcomp" ,ocaml4.07-ppx-optcomp)
+        ("ocaml-ppx-optional" ,ocaml4.07-ppx-optional)
+        ("ocaml-ppx-pipebang" ,ocaml4.07-ppx-pipebang)
+        ("ocaml-ppx-sexp-message" ,ocaml4.07-ppx-sexp-message)
+        ("ocaml-ppx-sexp-value" ,ocaml4.07-ppx-sexp-value)
+        ("ocaml-ppx-typerep-conv" ,ocaml4.07-ppx-typerep-conv)
+        ("ocaml-ppx-variants-conv" ,ocaml4.07-ppx-variants-conv)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (properties `((upstream-name . "ppx_jane")))
     (home-page "https://github.com/janestreet/ppx_jane")
     (synopsis "Standard Jane Street ppx rewriters")
@@ -4883,9 +5037,9 @@ (define-public ocaml-ppx-jane
 driver including all standard Jane Street ppx rewriters.")
     (license license:asl2.0)))
 
-(define-public ocaml-splittable-random
+(define-public ocaml4.07-splittable-random
   (package
-    (name "ocaml-splittable-random")
+    (name "ocaml4.07-splittable-random")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4896,10 +5050,14 @@ (define-public ocaml-splittable-random
                (base32
                 "0l1wbd881mymlnpzlq5q53mmdz3g5d7qjhyc7lfaq1x0iaccn5lc"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-ppx-jane" ,ocaml-ppx-jane)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-ppx-jane" ,ocaml4.07-ppx-jane)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))))
     (properties `((upstream-name . "splittable_random")))
     (home-page "https://github.com/janestreet/splittable_random")
     (synopsis "PRNG that can be split into independent streams")
@@ -4933,9 +5091,9 @@ (define-public ocaml-jane-street-headers
 various Jane Street packages.")
     (license license:asl2.0)))
 
-(define-public ocaml-configurator
+(define-public ocaml4.07-configurator
   (package
-    (name "ocaml-configurator")
+    (name "ocaml4.07-configurator")
     (version "0.11.0")
     (source (origin
               (method url-fetch)
@@ -4948,10 +5106,12 @@ (define-public ocaml-configurator
     (build-system dune-build-system)
     (arguments
      ;; No tests
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-stdio" ,ocaml-stdio)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-stdio" ,ocaml4.07-stdio)))
     (home-page "https://github.com/janestreet/configurator")
     (synopsis "Helper library for gathering system configuration")
     (description "Configurator is a small library that helps writing OCaml
@@ -4967,9 +5127,9 @@ (define-public ocaml-configurator
 @end itemize")
     (license license:asl2.0)))
 
-(define-public ocaml-spawn
+(define-public ocaml4.07-spawn
   (package
-    (name "ocaml-spawn")
+    (name "ocaml4.07-spawn")
     (version "0.13.0")
     (source (origin
               (method git-fetch)
@@ -4989,9 +5149,11 @@ (define-public ocaml-spawn
              (substitute* "test/tests.ml"
                (("/bin/pwd") (which "pwd"))
                (("/bin/echo") (which "echo")))
-             #t)))))
+             #t)))
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (native-inputs
-     `(("ocaml-ppx-expect" ,ocaml-ppx-expect)))
+     `(("ocaml-ppx-expect" ,ocaml4.07-ppx-expect)))
     (home-page "https://github.com/janestreet/spawn")
     (synopsis "Spawning sub-processes")
     (description
@@ -5013,9 +5175,9 @@ (define-public ocaml-spawn
 @end itemize")
     (license license:asl2.0)))
 
-(define-public ocaml-core
+(define-public ocaml4.07-core
   (package
-    (name "ocaml-core")
+    (name "ocaml4.07-core")
     (version "0.11.3")
     (source (origin
               (method git-fetch)
@@ -5030,18 +5192,21 @@ (define-public ocaml-core
     (arguments
      `(#:jbuild? #t
        ;; Require a cyclic dependency: core_extended
-       #:tests? #f))
+       #:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-configurator" ,ocaml-configurator)
-        ("ocaml-core-kernel" ,ocaml-core-kernel)
-        ("ocaml-ppx-assert" ,ocaml-ppx-assert)
-        ("ocaml-ppx-jane" ,ocaml-ppx-jane)
-        ("ocaml-sexplib" ,ocaml-sexplib)
-        ("ocaml-spawn" ,ocaml-spawn)
-        ("ocaml-stdio" ,ocaml-stdio)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
-        ("ocaml-ppxlib" ,ocaml-ppxlib)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-configurator" ,ocaml4.07-configurator)
+        ("ocaml-core-kernel" ,ocaml4.07-core-kernel)
+        ("ocaml-ppx-assert" ,ocaml4.07-ppx-assert)
+        ("ocaml-ppx-jane" ,ocaml4.07-ppx-jane)
+        ("ocaml-sexplib" ,ocaml4.07-sexplib)
+        ("ocaml-spawn" ,ocaml4.07-spawn)
+        ("ocaml-stdio" ,ocaml4.07-stdio)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))
+        ("ocaml-ppxlib" ,ocaml4.07-ppxlib)))
     (home-page "https://github.com/janestreet/core")
     (synopsis "Alternative to OCaml's standard library")
     (description "The Core suite of libraries is an alternative to OCaml's
@@ -5050,9 +5215,9 @@ (define-public ocaml-core
     ;; by OCaml's license for consortium members (see THIRD-PARTY.txt).
     (license license:asl2.0)))
 
-(define-public ocaml-core-kernel
+(define-public ocaml4.07-core-kernel
   (package
-    (name "ocaml-core-kernel")
+    (name "ocaml4.07-core-kernel")
     (version "0.11.1")
     (source (origin
               (method git-fetch)
@@ -5066,26 +5231,30 @@ (define-public ocaml-core-kernel
     (build-system dune-build-system)
     (arguments
      ;; Cyclic dependency with ocaml-core
-     `(#:tests? #f))
+     `(#:tests? #f
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib))
     (propagated-inputs
-      `(("ocaml-base" ,ocaml-base)
-        ("ocaml-bin-prot" ,ocaml-bin-prot)
-        ("ocaml-configurator" ,ocaml-configurator)
-        ("ocaml-fieldslib" ,ocaml-fieldslib)
-        ("ocaml-jane-street-headers" ,ocaml-jane-street-headers)
-        ("ocaml-ppx-assert" ,ocaml-ppx-assert)
-        ("ocaml-ppx-base" ,ocaml-ppx-base)
-        ("ocaml-ppx-hash" ,ocaml-ppx-hash)
-        ("ocaml-ppx-inline-test" ,ocaml-ppx-inline-test)
-        ("ocaml-ppx-jane" ,ocaml-ppx-jane)
-        ("ocaml-ppx-sexp-conv" ,ocaml-ppx-sexp-conv)
-        ("ocaml-ppx-sexp-message" ,ocaml-ppx-sexp-message)
-        ("ocaml-sexplib" ,ocaml-sexplib)
-        ("ocaml-splittable-random" ,ocaml-splittable-random)
-        ("ocaml-stdio" ,ocaml-stdio)
-        ("ocaml-typerep" ,ocaml-typerep)
-        ("ocaml-variantslib" ,ocaml-variantslib)
-        ("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)))
+      `(("ocaml-base" ,ocaml4.07-base)
+        ("ocaml-bin-prot" ,ocaml4.07-bin-prot)
+        ("ocaml-configurator" ,ocaml4.07-configurator)
+        ("ocaml-fieldslib" ,ocaml4.07-fieldslib)
+        ("ocaml-jane-street-headers"
+         ,(package-with-ocaml4.07 ocaml-jane-street-headers))
+        ("ocaml-ppx-assert" ,ocaml4.07-ppx-assert)
+        ("ocaml-ppx-base" ,ocaml4.07-ppx-base)
+        ("ocaml-ppx-hash" ,ocaml4.07-ppx-hash)
+        ("ocaml-ppx-inline-test" ,ocaml4.07-ppx-inline-test)
+        ("ocaml-ppx-jane" ,ocaml4.07-ppx-jane)
+        ("ocaml-ppx-sexp-conv" ,ocaml4.07-ppx-sexp-conv)
+        ("ocaml-ppx-sexp-message" ,ocaml4.07-ppx-sexp-message)
+        ("ocaml-sexplib" ,ocaml4.07-sexplib)
+        ("ocaml-splittable-random" ,ocaml4.07-splittable-random)
+        ("ocaml-stdio" ,ocaml4.07-stdio)
+        ("ocaml-typerep" ,ocaml4.07-typerep)
+        ("ocaml-variantslib" ,ocaml4.07-variantslib)
+        ("ocaml-migrate-parsetree"
+         ,(package-with-ocaml4.07 ocaml-migrate-parsetree))))
     (properties `((upstream-name . "core_kernel")))
     (home-page "https://github.com/janestreet/core_kernel")
     (synopsis "Portable standard library for OCaml")
@@ -5225,9 +5394,9 @@ (define-public ocaml-bisect-ppx
 then run the Bisect_ppx report tool on the generated visitation files.")
     (license license:mpl2.0)))
 
-(define-public ocaml-odoc
+(define-public ocaml4.07-odoc
   (package
-    (name "ocaml-odoc")
+    (name "ocaml4.07-odoc")
     (version "1.4.2")
     (source
      (origin
@@ -5239,20 +5408,24 @@ (define-public ocaml-odoc
        (sha256
         (base32 "0rvhx139jx6wmlfz355mja6mk03x4swq1xxvk5ky6jzhalq3cf5i"))))
     (build-system dune-build-system)
+    (arguments
+     `(#:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib
+       #:dune ,ocaml4.07-dune))
     (inputs
-     `(("ocaml-alcotest" ,ocaml-alcotest)
-       ("ocaml-markup" ,ocaml-markup)
-       ("ocaml-sexplib" ,ocaml-sexplib)
-       ("ocaml-re" ,ocaml-re)
-       ("ocaml-uutf" ,ocaml-uutf)))
+     `(("ocaml-alcotest" ,(package-with-ocaml4.07 ocaml-alcotest))
+       ("ocaml-markup" ,(package-with-ocaml4.07 ocaml-markup))
+       ("ocaml-sexplib" ,ocaml4.07-sexplib)
+       ("ocaml-re" ,(package-with-ocaml4.07 ocaml-re))
+       ("ocaml-uutf" ,(package-with-ocaml4.07 ocaml-uutf))))
     (native-inputs
-     `(("ocaml-astring" ,ocaml-astring)
-       ("ocaml-cmdliner" ,ocaml-cmdliner)
-       ("ocaml-cppo" ,ocaml-cppo)
-       ("ocaml-fpath" ,ocaml-fpath)
-       ("ocaml-result" ,ocaml-result)
-       ("ocaml-tyxml" ,ocaml-tyxml)
-       ("ocaml-bisect-ppx" ,ocaml-bisect-ppx)))
+     `(("ocaml-astring" ,(package-with-ocaml4.07 ocaml-astring))
+       ("ocaml-cmdliner" ,(package-with-ocaml4.07 ocaml-cmdliner))
+       ("ocaml-cppo" ,(package-with-ocaml4.07 ocaml-cppo))
+       ("ocaml-fpath" ,(package-with-ocaml4.07 ocaml-fpath))
+       ("ocaml-result" ,(package-with-ocaml4.07 ocaml-result))
+       ("ocaml-tyxml" ,(package-with-ocaml4.07 ocaml-tyxml))
+       ("ocaml-bisect-ppx" ,(package-with-ocaml4.07 ocaml-bisect-ppx))))
     (home-page "https://github.com/ocaml/odoc")
     (synopsis "OCaml documentation generator")
     (description "Odoc is a documentation generator for OCaml.  It reads
@@ -5264,9 +5437,9 @@ (define-public ocaml-odoc
 complexity of the OCaml module system.")
     (license license:isc)))
 
-(define-public ocaml-fftw3
+(define-public ocaml4.07-fftw3
   (package
-    (name "ocaml-fftw3")
+    (name "ocaml4.07-fftw3")
     (version "0.8.4")
     (source
      (origin
@@ -5281,13 +5454,16 @@ (define-public ocaml-fftw3
     (build-system dune-build-system)
     (arguments
      `(#:tests? #t
-       #:test-target "tests"))
+       #:test-target "tests"
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib
+       #:dune ,ocaml4.07-dune))
     (propagated-inputs
      `(("fftw" ,fftw)
        ("fftwf" ,fftwf)))
     (native-inputs
-     `(("ocaml-cppo" ,ocaml-cppo)
-       ("ocaml-lacaml" ,ocaml-lacaml)))
+     `(("ocaml-cppo" ,(package-with-ocaml4.07 ocaml-cppo))
+       ("ocaml-lacaml" ,ocaml4.07-lacaml)))
     (home-page
      "https://github.com/Chris00/fftw-ocaml")
     (synopsis
@@ -5297,9 +5473,9 @@ (define-public ocaml-fftw3
 library FFTW.")
     (license license:lgpl2.1))) ; with static linking exception.
 
-(define-public ocaml-lacaml
+(define-public ocaml4.07-lacaml
   (package
-    (name "ocaml-lacaml")
+    (name "ocaml4.07-lacaml")
     (version "11.0.5")
     (source
      (origin
@@ -5313,12 +5489,15 @@ (define-public ocaml-lacaml
          "180yb79a3qgx067qcpm50q12hrimjygf06rgkzbish9d1zfm670c"))))
     (build-system dune-build-system)
     (arguments
-     `(#:tests? #f)) ; No test target.
+     `(#:tests? #f ; No test target.
+       #:ocaml ,ocaml-4.07
+       #:findlib ,ocaml4.07-findlib
+       #:dune ,ocaml4.07-dune))
     (native-inputs
      `(("openblas" ,openblas)
        ("lapack" ,lapack)
-       ("ocaml-base" ,ocaml-base)
-       ("ocaml-stdio" ,ocaml-stdio)))
+       ("ocaml-base" ,ocaml4.07-base)
+       ("ocaml-stdio" ,ocaml4.07-stdio)))
     (home-page "https://mmottl.github.io/lacaml/")
     (synopsis
      "OCaml-bindings to BLAS and LAPACK")