diff --git a/packages/melange-playground/melange-playground.2.0.0/opam b/packages/melange-playground/melange-playground.2.0.0/opam
new file mode 100644
index 00000000000..e5d7856b10c
--- /dev/null
+++ b/packages/melange-playground/melange-playground.2.0.0/opam
@@ -0,0 +1,43 @@
+opam-version: "2.0"
+synopsis: "The Melange compiler, bundled for the browser"
+maintainer: ["Antonio Nuno Monteiro <anmonteiro@gmail.com>"]
+authors: ["Antonio Nuno Monteiro <anmonteiro@gmail.com>"]
+license: "LGPL-2.1-or-later"
+homepage: "https://github.com/melange-re/melange"
+bug-reports: "https://github.com/melange-re/melange/issues"
+depends: [
+  "dune" {>= "3.8"}
+  "ocaml"
+  "js_of_ocaml"
+  "reason" {>= "3.9.0"}
+  "melange" {= version}
+  "reason-react-ppx" {= "dev"}
+  "odoc" {with-doc}
+]
+build: [
+  ["dune" "subst"] {dev}
+  [
+    "dune"
+    "build"
+    "-p"
+    name
+    "-j"
+    jobs
+    "@install"
+    "@runtest" {with-test}
+    "@doc" {with-doc}
+  ]
+]
+dev-repo: "git+https://github.com/melange-re/melange.git"
+pin-depends: [
+  [ "reason-react-ppx.dev" "git+https://github.com/reasonml/reason-react.git#9e70d7548918816f1c0d8be8bdc66b6deabd339a" ]
+]
+url {
+  src:
+    "https://github.com/melange-re/melange/releases/download/2.0.0/melange-2.0.0.tbz"
+  checksum: [
+    "sha256=0e213624b1626428a181fa0fbb262eadffb24431e530ad06dca885c6f0cf1e55"
+    "sha512=a7517da8aaa5c9bb8690826af3f8ca6dbbf1bccaa3f76d8c522963f0f9d46dc5e280cc4739879fdb09674f178f5664b1ba42c774b533bc51e90332d8bf6722ae"
+  ]
+}
+x-commit-hash: "465101328e0e1ec90e246b0a2e8622e6cbdc0584"
diff --git a/packages/melange/melange.2.0.0/opam b/packages/melange/melange.2.0.0/opam
new file mode 100644
index 00000000000..468ffa25306
--- /dev/null
+++ b/packages/melange/melange.2.0.0/opam
@@ -0,0 +1,44 @@
+opam-version: "2.0"
+synopsis: "Toolchain to produce JS from Reason/OCaml"
+maintainer: ["Antonio Nuno Monteiro <anmonteiro@gmail.com>"]
+authors: ["Antonio Nuno Monteiro <anmonteiro@gmail.com>"]
+license: "LGPL-2.1-or-later"
+homepage: "https://github.com/melange-re/melange"
+bug-reports: "https://github.com/melange-re/melange/issues"
+depends: [
+  "dune" {>= "3.8"}
+  "ocaml" {>= "5.1"}
+  "cmdliner" {>= "1.1.0"}
+  "dune-build-info"
+  "cppo" {build}
+  "ounit" {with-test}
+  "reason" {with-test & >= "3.9.0"}
+  "ppxlib" {>= "0.24.0"}
+  "menhir" {>= "20201214"}
+  "reactjs-jsx-ppx" {with-test}
+  "odoc" {with-doc}
+]
+build: [
+  ["dune" "subst"] {dev}
+  [
+    "dune"
+    "build"
+    "-p"
+    name
+    "-j"
+    jobs
+    "@install"
+    "@runtest" {with-test}
+    "@doc" {with-doc}
+  ]
+]
+dev-repo: "git+https://github.com/melange-re/melange.git"
+url {
+  src:
+    "https://github.com/melange-re/melange/releases/download/2.0.0/melange-2.0.0.tbz"
+  checksum: [
+    "sha256=0e213624b1626428a181fa0fbb262eadffb24431e530ad06dca885c6f0cf1e55"
+    "sha512=a7517da8aaa5c9bb8690826af3f8ca6dbbf1bccaa3f76d8c522963f0f9d46dc5e280cc4739879fdb09674f178f5664b1ba42c774b533bc51e90332d8bf6722ae"
+  ]
+}
+x-commit-hash: "465101328e0e1ec90e246b0a2e8622e6cbdc0584"