diff --git a/packages/conduit-async-ssl/conduit-async-ssl.3.0.0/opam b/packages/conduit-async-ssl/conduit-async-ssl.3.0.0/opam
new file mode 100644
index 000000000000..6e6bd98a327e
--- /dev/null
+++ b/packages/conduit-async-ssl/conduit-async-ssl.3.0.0/opam
@@ -0,0 +1,39 @@
+opam-version: "2.0"
+maintainer: "anil@recoil.org"
+authors: [
+  "Anil Madhavapeddy" 
+  "Thomas Leonard" 
+  "Thomas Gazagnaire" 
+  "Rudi Grinberg"
+]
+license: "ISC"
+tags: "org:mirage"
+homepage: "https://github.com/mirage/ocaml-conduit"
+bug-reports: "https://github.com/mirage/ocaml-conduit/issues"
+dev-repo: "git+https://github.com/mirage/ocaml-conduit.git"
+synopsis: "A network connection establishment library for Async"
+
+build: [
+  ["dune" "subst"] {pinned}
+  ["dune" "build" "-p" name "-j" jobs]
+  ["dune" "runtest" "-j1"] {with-test}
+]
+
+depends: [
+  "ocaml" {>= "4.03.0"}
+  "dune"
+  "core"
+  "conduit-async"
+  "async" {>= "v0.12.0"}
+  "async_ssl"
+  "stdlib-shims" {with-test}
+]
+x-commit-hash: "f0577a03ab69a306a384bc220990edf24943f9fb"
+url {
+  src:
+    "https://github.com/mirage/ocaml-conduit/releases/download/v3.0.0/conduit-v3.0.0.tbz"
+  checksum: [
+    "sha256=c589a8297dc1e80b1eae93815b5622ae50ceebd9b287f302f7f673218377682f"
+    "sha512=36003e8b4791b9187b0d7f3b0cd3d3d55872d4ad7dea5a0b7008c180700cf857381b1c3b98e88214f546804afb988d625654fa10f3284d4c1fd98a2d57b6b32b"
+  ]
+}
diff --git a/packages/conduit-async-tls/conduit-async-tls.3.0.0/opam b/packages/conduit-async-tls/conduit-async-tls.3.0.0/opam
new file mode 100644
index 000000000000..3f9a00b93a40
--- /dev/null
+++ b/packages/conduit-async-tls/conduit-async-tls.3.0.0/opam
@@ -0,0 +1,39 @@
+opam-version: "2.0"
+maintainer: "anil@recoil.org"
+authors: [
+  "Anil Madhavapeddy" 
+  "Thomas Leonard" 
+  "Thomas Gazagnaire" 
+  "Rudi Grinberg"
+]
+license: "ISC"
+tags: "org:mirage"
+homepage: "https://github.com/mirage/ocaml-conduit"
+bug-reports: "https://github.com/mirage/ocaml-conduit/issues"
+dev-repo: "git+https://github.com/mirage/ocaml-conduit.git"
+synopsis: "A network connection establishment library for Async"
+
+build: [
+  ["dune" "subst"] {pinned}
+  ["dune" "build" "-p" name "-j" jobs]
+  ["dune" "runtest" "-j1"] {with-test}
+]
+
+depends: [
+  "ocaml" {>= "4.03.0"}
+  "dune"
+  "core"
+  "conduit-async"
+  "async" {>= "v0.12.0"}
+  "conduit-tls"
+  "stdlib-shims" {with-test}
+]
+x-commit-hash: "f0577a03ab69a306a384bc220990edf24943f9fb"
+url {
+  src:
+    "https://github.com/mirage/ocaml-conduit/releases/download/v3.0.0/conduit-v3.0.0.tbz"
+  checksum: [
+    "sha256=c589a8297dc1e80b1eae93815b5622ae50ceebd9b287f302f7f673218377682f"
+    "sha512=36003e8b4791b9187b0d7f3b0cd3d3d55872d4ad7dea5a0b7008c180700cf857381b1c3b98e88214f546804afb988d625654fa10f3284d4c1fd98a2d57b6b32b"
+  ]
+}
diff --git a/packages/conduit-async/conduit-async.3.0.0/opam b/packages/conduit-async/conduit-async.3.0.0/opam
new file mode 100644
index 000000000000..509949c54227
--- /dev/null
+++ b/packages/conduit-async/conduit-async.3.0.0/opam
@@ -0,0 +1,39 @@
+opam-version: "2.0"
+maintainer: "anil@recoil.org"
+authors: [
+  "Anil Madhavapeddy" 
+  "Thomas Leonard" 
+  "Thomas Gazagnaire" 
+  "Rudi Grinberg"
+]
+license: "ISC"
+tags: "org:mirage"
+homepage: "https://github.com/mirage/ocaml-conduit"
+bug-reports: "https://github.com/mirage/ocaml-conduit/issues"
+dev-repo: "git+https://github.com/mirage/ocaml-conduit.git"
+synopsis: "A network connection establishment library for Async"
+
+build: [
+  ["dune" "subst"] {pinned}
+  ["dune" "build" "-p" name "-j" jobs]
+  ["dune" "runtest" "-j1"] {with-test}
+]
+
+depends: [
+  "ocaml" {>= "4.03.0"}
+  "dune"
+  "core"
+  "conduit"
+  "async" {>= "v0.12.0"}
+  "cstruct"
+  "stdlib-shims" {with-test}
+]
+x-commit-hash: "f0577a03ab69a306a384bc220990edf24943f9fb"
+url {
+  src:
+    "https://github.com/mirage/ocaml-conduit/releases/download/v3.0.0/conduit-v3.0.0.tbz"
+  checksum: [
+    "sha256=c589a8297dc1e80b1eae93815b5622ae50ceebd9b287f302f7f673218377682f"
+    "sha512=36003e8b4791b9187b0d7f3b0cd3d3d55872d4ad7dea5a0b7008c180700cf857381b1c3b98e88214f546804afb988d625654fa10f3284d4c1fd98a2d57b6b32b"
+  ]
+}
diff --git a/packages/conduit-lwt-ssl/conduit-lwt-ssl.3.0.0/opam b/packages/conduit-lwt-ssl/conduit-lwt-ssl.3.0.0/opam
new file mode 100644
index 000000000000..8aa917c4b5e8
--- /dev/null
+++ b/packages/conduit-lwt-ssl/conduit-lwt-ssl.3.0.0/opam
@@ -0,0 +1,37 @@
+opam-version: "2.0"
+maintainer: "anil@recoil.org"
+authors:[
+  "Anil Madhavapeddy"
+  "Thomas Leonard"
+  "Thomas Gazagnaire"
+  "Rudi Grinberg"
+  "Romain Calascibetta"
+]
+license: "ISC"
+tags: "org:mirage"
+homepage: "https://github.com/mirage/ocaml-conduit"
+bug-reports: "https://github.com/mirage/ocaml-conduit/issues"
+dev-repo: "git+https://github.com/mirage/ocaml-conduit.git"
+synopsis: "A portable network connection establishment library using Lwt"
+
+build: [
+  ["dune" "subst"] {pinned}
+  ["dune" "build" "-p" name "-j" jobs]
+  ["dune" "runtest" "-j1"] {with-test}
+]
+
+depends: [
+  "ocaml" {>= "4.07.0"}
+  "dune"
+  "conduit-lwt"
+  "lwt_ssl"
+]
+x-commit-hash: "f0577a03ab69a306a384bc220990edf24943f9fb"
+url {
+  src:
+    "https://github.com/mirage/ocaml-conduit/releases/download/v3.0.0/conduit-v3.0.0.tbz"
+  checksum: [
+    "sha256=c589a8297dc1e80b1eae93815b5622ae50ceebd9b287f302f7f673218377682f"
+    "sha512=36003e8b4791b9187b0d7f3b0cd3d3d55872d4ad7dea5a0b7008c180700cf857381b1c3b98e88214f546804afb988d625654fa10f3284d4c1fd98a2d57b6b32b"
+  ]
+}
diff --git a/packages/conduit-lwt-tls/conduit-lwt-tls.3.0.0/opam b/packages/conduit-lwt-tls/conduit-lwt-tls.3.0.0/opam
new file mode 100644
index 000000000000..50813366eafe
--- /dev/null
+++ b/packages/conduit-lwt-tls/conduit-lwt-tls.3.0.0/opam
@@ -0,0 +1,38 @@
+opam-version: "2.0"
+maintainer: "anil@recoil.org"
+authors:[
+  "Anil Madhavapeddy"
+  "Thomas Leonard"
+  "Thomas Gazagnaire"
+  "Rudi Grinberg"
+  "Romain Calascibetta"
+]
+license: "ISC"
+tags: "org:mirage"
+homepage: "https://github.com/mirage/ocaml-conduit"
+bug-reports: "https://github.com/mirage/ocaml-conduit/issues"
+dev-repo: "git+https://github.com/mirage/ocaml-conduit.git"
+synopsis: "A portable network connection establishment library using Lwt"
+
+build: [
+  ["dune" "subst"] {pinned}
+  ["dune" "build" "-p" name "-j" jobs]
+  ["dune" "runtest" "-j1"] {with-test}
+]
+
+depends: [
+  "ocaml" {>= "4.07.0"}
+  "dune"
+  "conduit-lwt"
+  "conduit-tls"
+  "mirage-crypto-rng" {>= "0.8.0"}
+]
+x-commit-hash: "f0577a03ab69a306a384bc220990edf24943f9fb"
+url {
+  src:
+    "https://github.com/mirage/ocaml-conduit/releases/download/v3.0.0/conduit-v3.0.0.tbz"
+  checksum: [
+    "sha256=c589a8297dc1e80b1eae93815b5622ae50ceebd9b287f302f7f673218377682f"
+    "sha512=36003e8b4791b9187b0d7f3b0cd3d3d55872d4ad7dea5a0b7008c180700cf857381b1c3b98e88214f546804afb988d625654fa10f3284d4c1fd98a2d57b6b32b"
+  ]
+}
diff --git a/packages/conduit-lwt/conduit-lwt.3.0.0/opam b/packages/conduit-lwt/conduit-lwt.3.0.0/opam
new file mode 100644
index 000000000000..421e9c14d206
--- /dev/null
+++ b/packages/conduit-lwt/conduit-lwt.3.0.0/opam
@@ -0,0 +1,38 @@
+opam-version: "2.0"
+maintainer: "anil@recoil.org"
+authors:[
+  "Anil Madhavapeddy"
+  "Thomas Leonard"
+  "Thomas Gazagnaire"
+  "Rudi Grinberg"
+  "Romain Calascibetta"
+]
+license: "ISC"
+tags: "org:mirage"
+homepage: "https://github.com/mirage/ocaml-conduit"
+bug-reports: "https://github.com/mirage/ocaml-conduit/issues"
+dev-repo: "git+https://github.com/mirage/ocaml-conduit.git"
+synopsis: "A portable network connection establishment library using Lwt"
+
+build: [
+  ["dune" "subst"] {pinned}
+  ["dune" "build" "-p" name "-j" jobs]
+  ["dune" "runtest" "-j1"] {with-test}
+]
+
+depends: [
+  "ocaml" {>= "4.07.0"}
+  "dune"
+  "conduit"
+  "lwt"
+  "base-unix"
+]
+x-commit-hash: "f0577a03ab69a306a384bc220990edf24943f9fb"
+url {
+  src:
+    "https://github.com/mirage/ocaml-conduit/releases/download/v3.0.0/conduit-v3.0.0.tbz"
+  checksum: [
+    "sha256=c589a8297dc1e80b1eae93815b5622ae50ceebd9b287f302f7f673218377682f"
+    "sha512=36003e8b4791b9187b0d7f3b0cd3d3d55872d4ad7dea5a0b7008c180700cf857381b1c3b98e88214f546804afb988d625654fa10f3284d4c1fd98a2d57b6b32b"
+  ]
+}
diff --git a/packages/conduit-mirage/conduit-mirage.3.0.0/opam b/packages/conduit-mirage/conduit-mirage.3.0.0/opam
new file mode 100644
index 000000000000..a71b945796ef
--- /dev/null
+++ b/packages/conduit-mirage/conduit-mirage.3.0.0/opam
@@ -0,0 +1,40 @@
+opam-version: "2.0"
+maintainer: "anil@recoil.org"
+authors: [
+  "Anil Madhavapeddy"
+  "Thomas Leonard"
+  "Thomas Gazagnaire"
+]
+license: "ISC"
+tags: "org:mirage"
+homepage: "https://github.com/mirage/ocaml-conduit"
+bug-reports: "https://github.com/mirage/ocaml-conduit/issues"
+dev-repo: "git+https://github.com/mirage/ocaml-conduit.git"
+synopsis: "A network connection establishment library for MirageOS"
+
+build: [
+  ["dune" "subst"] {pinned}
+  ["dune" "build" "-p" name "-j" jobs]
+  ["dune" "runtest" "-p" name] {with-test}
+]
+
+depends: [
+  "ocaml" {>= "4.07.0"}
+  "dune"
+  "conduit"
+  "tcpip"
+  "mirage-flow"
+  "mirage-time"
+  "dns-client" {>= "4.6.0"}
+  "ke"
+  "bigstringaf"
+]
+x-commit-hash: "f0577a03ab69a306a384bc220990edf24943f9fb"
+url {
+  src:
+    "https://github.com/mirage/ocaml-conduit/releases/download/v3.0.0/conduit-v3.0.0.tbz"
+  checksum: [
+    "sha256=c589a8297dc1e80b1eae93815b5622ae50ceebd9b287f302f7f673218377682f"
+    "sha512=36003e8b4791b9187b0d7f3b0cd3d3d55872d4ad7dea5a0b7008c180700cf857381b1c3b98e88214f546804afb988d625654fa10f3284d4c1fd98a2d57b6b32b"
+  ]
+}
diff --git a/packages/conduit-tls/conduit-tls.3.0.0/opam b/packages/conduit-tls/conduit-tls.3.0.0/opam
new file mode 100644
index 000000000000..2b860e056d74
--- /dev/null
+++ b/packages/conduit-tls/conduit-tls.3.0.0/opam
@@ -0,0 +1,58 @@
+opam-version: "2.0"
+maintainer: "anil@recoil.org"
+authors: [
+  "Anil Madhavapeddy" "Thomas Leonard" "Thomas Gazagnaire" "Rudi Grinberg"
+  "Romain Calascibetta"
+]
+license: "ISC"
+tags: "org:mirage"
+homepage: "https://github.com/mirage/ocaml-conduit"
+doc: "https://mirage.github.io/ocaml-conduit/"
+bug-reports: "https://github.com/mirage/ocaml-conduit/issues"
+dev-repo: "git+https://github.com/mirage/ocaml-conduit.git"
+synopsis: "A network connection establishment library"
+description: """
+The `conduit` library takes care of establishing and listening for 
+TCP and SSL/TLS connections for the Lwt and Async libraries.
+
+The reason this library exists is to provide a degree of abstraction
+from the precise SSL library used, since there are a variety of ways
+to bind to a library (e.g. the C FFI, or the Ctypes library), as well
+as well as which library is used (just OpenSSL for now).
+
+By default, OpenSSL is used as the preferred connection library, but
+you can force the use of the pure OCaml TLS stack by setting the
+environment variable `CONDUIT_TLS=native` when starting your program.
+
+The useful opam packages available that extend this library are:
+
+- `conduit`: the main `Conduit` module
+- `conduit-lwt`: the portable Lwt implementation
+- `conduit-lwt-unix`: the Lwt/Unix implementation
+- `conduit-async` the Jane Street Async implementation
+- `conduit-mirage`: the MirageOS compatible implementation
+"""
+
+build: [
+  ["dune" "subst"] {pinned}
+  ["dune" "build" "-p" name "-j" jobs]
+]
+
+depends: [
+  "ocaml" {>= "4.07.0"}
+  "dune"
+  "conduit"
+  "ke"
+  "tls"
+  "logs"
+  "bigstringaf"
+]
+x-commit-hash: "f0577a03ab69a306a384bc220990edf24943f9fb"
+url {
+  src:
+    "https://github.com/mirage/ocaml-conduit/releases/download/v3.0.0/conduit-v3.0.0.tbz"
+  checksum: [
+    "sha256=c589a8297dc1e80b1eae93815b5622ae50ceebd9b287f302f7f673218377682f"
+    "sha512=36003e8b4791b9187b0d7f3b0cd3d3d55872d4ad7dea5a0b7008c180700cf857381b1c3b98e88214f546804afb988d625654fa10f3284d4c1fd98a2d57b6b32b"
+  ]
+}
diff --git a/packages/conduit/conduit.3.0.0/opam b/packages/conduit/conduit.3.0.0/opam
new file mode 100644
index 000000000000..41c45db3d50b
--- /dev/null
+++ b/packages/conduit/conduit.3.0.0/opam
@@ -0,0 +1,60 @@
+opam-version: "2.0"
+maintainer: "anil@recoil.org"
+authors: [
+  "Anil Madhavapeddy"
+  "Thomas Leonard"
+  "Thomas Gazagnaire"
+  "Rudi Grinberg"
+  "Romain Calascibetta"
+]
+license: "ISC"
+tags: "org:mirage"
+homepage: "https://github.com/mirage/ocaml-conduit"
+doc: "https://mirage.github.io/ocaml-conduit/"
+bug-reports: "https://github.com/mirage/ocaml-conduit/issues"
+dev-repo: "git+https://github.com/mirage/ocaml-conduit.git"
+synopsis: "A network connection establishment library"
+description: """
+The `conduit` library takes care of establishing and listening for 
+TCP and SSL/TLS connections for the Lwt and Async libraries.
+
+The reason this library exists is to provide a degree of abstraction
+from the precise SSL library used, since there are a variety of ways
+to bind to a library (e.g. the C FFI, or the Ctypes library), as well
+as well as which library is used (just OpenSSL for now).
+
+By default, OpenSSL is used as the preferred connection library, but
+you can force the use of the pure OCaml TLS stack by setting the
+environment variable `CONDUIT_TLS=native` when starting your program.
+
+The useful opam packages available that extend this library are:
+
+- `conduit`: the main `Conduit` module
+- `conduit-lwt`: the portable Lwt implementation
+- `conduit-lwt-unix`: the Lwt/Unix implementation
+- `conduit-async` the Jane Street Async implementation
+- `conduit-mirage`: the MirageOS compatible implementation
+"""
+
+build: [
+  ["dune" "subst"] {pinned}
+  ["dune" "build" "-p" name "-j" jobs]
+]
+
+depends: [
+  "ocaml" {>= "4.07.0"}
+  "dune"
+  "ipaddr"
+  "domain-name"
+  "stdlib-shims"
+  "alcotest" {with-test}
+]
+x-commit-hash: "f0577a03ab69a306a384bc220990edf24943f9fb"
+url {
+  src:
+    "https://github.com/mirage/ocaml-conduit/releases/download/v3.0.0/conduit-v3.0.0.tbz"
+  checksum: [
+    "sha256=c589a8297dc1e80b1eae93815b5622ae50ceebd9b287f302f7f673218377682f"
+    "sha512=36003e8b4791b9187b0d7f3b0cd3d3d55872d4ad7dea5a0b7008c180700cf857381b1c3b98e88214f546804afb988d625654fa10f3284d4c1fd98a2d57b6b32b"
+  ]
+}