diff --git a/packages/csv-windows.2.4/opam b/packages/csv-windows.2.4/opam
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@@ -0,0 +1,36 @@
+opam-version: "2.0"
+maintainer: "Christophe Troestler <Christophe.Troestler@umons.ac.be>"
+authors: [ "Richard Jones"
+           "Christophe Troestler" ]
+tags: ["csv" "database" "science"]
+license: "LGPL-2.1-only WITH OCaml-LGPL-linking-exception"
+homepage: "https://github.com/Chris00/ocaml-csv"
+dev-repo: "git+https://github.com/Chris00/ocaml-csv.git"
+bug-reports: "https://github.com/Chris00/ocaml-csv/issues"
+doc: "https://Chris00.github.io/ocaml-csv/doc"
+build: [
+  ["dune" "subst"] {dev}
+  ["dune" "build" "-p" "csv" "-x" "windows" "-j" jobs]
+  ["dune" "runtest" "-p" "csv" "-x" "windows" "-j" jobs] {with-test}
+]
+depends: [
+  "ocaml" {>= "4.03.0"}
+  "ocaml-windows" {>= "4.03.0"}
+  "dune"
+  "base-bytes"
+  "base-unix"
+]
+synopsis: "A pure OCaml library to read and write CSV files"
+description: """
+This is a pure OCaml library to read and write CSV files, including
+all extensions used by Excel — e.g. quotes, newlines, 8 bit characters
+in fields, \"0 etc. A special representation of rows of CSV files with
+a header is provided."""
+url {
+  src:
+    "https://github.com/Chris00/ocaml-csv/releases/download/2.4/csv-2.4.tbz"
+  checksum: [
+    "sha256=13fec48177f2658c4c62edf04f5edd055962fbf2abb4c3e372d268dd2ab2a98e"
+    "sha512=a8a952315950fc7fcca36c758b69618296060fd4eab3140ac364ad62172cf665b3c0c9d892ddb586929217466a42f33f432e32e3bd0c1e549ea22bef6ef8a900"
+  ]
+}