diff --git a/packages/conf-aarch64-linux-gnu-gcc/conf-aarch64-linux-gnu-gcc.1/opam b/packages/conf-aarch64-linux-gnu-gcc/conf-aarch64-linux-gnu-gcc.1/opam
index 9148d1938789..b36fe17e8a52 100644
--- a/packages/conf-aarch64-linux-gnu-gcc/conf-aarch64-linux-gnu-gcc.1/opam
+++ b/packages/conf-aarch64-linux-gnu-gcc/conf-aarch64-linux-gnu-gcc.1/opam
@@ -20,3 +20,4 @@ Please install aarch64-linux-gnu-gcc manually, as there is no known package
 for it for your distribution."""
     {failure}
 x-maintenance-intent: ["(latest)"]
+x-ci-accept-failures: [ "alpine-3.22" "centos-9" "opensuse-15.6" "opensuse-tumbleweed" ]
diff --git a/packages/ocaml-unikraft-arm64/ocaml-unikraft-arm64.1.1.0/opam b/packages/ocaml-unikraft-arm64/ocaml-unikraft-arm64.1.1.0/opam
new file mode 100644
index 000000000000..9034e02eb2d8
--- /dev/null
+++ b/packages/ocaml-unikraft-arm64/ocaml-unikraft-arm64.1.1.0/opam
@@ -0,0 +1,42 @@
+opam-version: "2.0"
+maintainer: "samuel@tarides.com"
+homepage: "https://github.com/mirage/ocaml-unikraft/"
+dev-repo: "git+https://github.com/mirage/ocaml-unikraft.git"
+bug-reports: "https://github.com/mirage/ocaml-unikraft/issues"
+tags: "org:mirage"
+synopsis: "OCaml cross compiler to the freestanding Unikraft arm64 backends"
+description:
+  "This package provides an OCaml cross compiler, suitable for linking with a Unikraft arm64 unikernel."
+authors: "Samuel Hym"
+license: ["MIT" "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception"]
+depends: [
+  "ocaml" {>= "5.3.0" & <= "5.4.0"}
+  "ocaml-unikraft-toolchain-arm64"
+  "ocamlfind"
+  "ocaml-src" {build}
+  "conf-git" {build}
+]
+build: [
+  [
+    make
+    "-j%{jobs}%"
+    "prefix=%{prefix}%"
+    "BIN=%{bin}%"
+    "LIB=%{lib}%"
+    "SHARE=%{share}%"
+    "OCUKARCH=arm64"
+    "%{name}%.install"
+  ]
+]
+install: [
+  [make "install-ocaml"]
+]
+conflicts: ["ocaml-option-bytecode-only"]
+url {
+  src:
+    "https://github.com/mirage/ocaml-unikraft/archive/refs/tags/v1.1.0.tar.gz"
+  checksum:
+    "sha256=97b9bdfd07ed0f031954138adbace930790d064ed3a590b9ff46f32f2433fde4"
+}
+available: os = "linux"
+x-maintenance-intent: ["(latest)"]
diff --git a/packages/ocaml-unikraft-backend-firecracker-arm64/ocaml-unikraft-backend-firecracker-arm64.0.20.0/opam b/packages/ocaml-unikraft-backend-firecracker-arm64/ocaml-unikraft-backend-firecracker-arm64.0.20.0/opam
new file mode 100644
index 000000000000..11b2094180b5
--- /dev/null
+++ b/packages/ocaml-unikraft-backend-firecracker-arm64/ocaml-unikraft-backend-firecracker-arm64.0.20.0/opam
@@ -0,0 +1,39 @@
+opam-version: "2.0"
+maintainer: "samuel@tarides.com"
+homepage: "https://github.com/mirage/ocaml-unikraft/"
+dev-repo: "git+https://github.com/mirage/ocaml-unikraft.git"
+bug-reports: "https://github.com/mirage/ocaml-unikraft/issues"
+tags: "org:mirage"
+synopsis: "Firecracker/arm64 Unikraft backend for OCaml"
+authors: ["Samuel Hym" "Unikraft contributors"]
+license: ["MIT" "BSD-3-Clause" "GPL-2.0-only"]
+depends: [
+  "unikraft" {= version}
+  "unikraft-musl" {= version}
+  "conf-aarch64-linux-gnu-gcc" {arch != "arm64"}
+]
+depopts: [
+  "ocaml-unikraft-option-debug"
+]
+build: [
+  [
+    make
+    "-j%{jobs}%"
+    "UNIKRAFT=%{unikraft:lib}%"
+    "UNIKRAFTMUSL=%{unikraft-musl:lib}%"
+    "OCUKPLAT=firecracker"
+    "OCUKARCH=arm64"
+    "OCUKEXTLIBS=musl"
+    "OCUKCONFIGOPTS+=debug" {ocaml-unikraft-option-debug:installed}
+    "UK_CFLAGS=-std=gnu11"
+    "%{name}%.install"
+  ]
+]
+url {
+  src:
+    "https://github.com/mirage/ocaml-unikraft/archive/refs/tags/v1.1.0.tar.gz"
+  checksum:
+    "sha256=97b9bdfd07ed0f031954138adbace930790d064ed3a590b9ff46f32f2433fde4"
+}
+available: os = "linux"
+x-maintenance-intent: ["(latest)"]
diff --git a/packages/ocaml-unikraft-backend-firecracker-x86_64/ocaml-unikraft-backend-firecracker-x86_64.0.20.0/opam b/packages/ocaml-unikraft-backend-firecracker-x86_64/ocaml-unikraft-backend-firecracker-x86_64.0.20.0/opam
new file mode 100644
index 000000000000..c84590e22f0c
--- /dev/null
+++ b/packages/ocaml-unikraft-backend-firecracker-x86_64/ocaml-unikraft-backend-firecracker-x86_64.0.20.0/opam
@@ -0,0 +1,39 @@
+opam-version: "2.0"
+maintainer: "samuel@tarides.com"
+homepage: "https://github.com/mirage/ocaml-unikraft/"
+dev-repo: "git+https://github.com/mirage/ocaml-unikraft.git"
+bug-reports: "https://github.com/mirage/ocaml-unikraft/issues"
+tags: "org:mirage"
+synopsis: "Firecracker/x86_64 Unikraft backend for OCaml"
+authors: ["Samuel Hym" "Unikraft contributors"]
+license: ["MIT" "BSD-3-Clause" "GPL-2.0-only"]
+depends: [
+  "unikraft" {= version}
+  "unikraft-musl" {= version}
+  "conf-x86_64-linux-gnu-gcc" {arch != "x86_64"}
+]
+depopts: [
+  "ocaml-unikraft-option-debug"
+]
+build: [
+  [
+    make
+    "-j%{jobs}%"
+    "UNIKRAFT=%{unikraft:lib}%"
+    "UNIKRAFTMUSL=%{unikraft-musl:lib}%"
+    "OCUKPLAT=firecracker"
+    "OCUKARCH=x86_64"
+    "OCUKEXTLIBS=musl"
+    "OCUKCONFIGOPTS+=debug" {ocaml-unikraft-option-debug:installed}
+    "UK_CFLAGS=-std=gnu11"
+    "%{name}%.install"
+  ]
+]
+url {
+  src:
+    "https://github.com/mirage/ocaml-unikraft/archive/refs/tags/v1.1.0.tar.gz"
+  checksum:
+    "sha256=97b9bdfd07ed0f031954138adbace930790d064ed3a590b9ff46f32f2433fde4"
+}
+available: os = "linux"
+x-maintenance-intent: ["(latest)"]
diff --git a/packages/ocaml-unikraft-backend-firecracker/ocaml-unikraft-backend-firecracker.0.20.0/opam b/packages/ocaml-unikraft-backend-firecracker/ocaml-unikraft-backend-firecracker.0.20.0/opam
new file mode 100644
index 000000000000..9c4fe030f9fa
--- /dev/null
+++ b/packages/ocaml-unikraft-backend-firecracker/ocaml-unikraft-backend-firecracker.0.20.0/opam
@@ -0,0 +1,19 @@
+opam-version: "2.0"
+maintainer: "samuel@tarides.com"
+homepage: "https://github.com/mirage/ocaml-unikraft/"
+dev-repo: "git+https://github.com/mirage/ocaml-unikraft.git"
+bug-reports: "https://github.com/mirage/ocaml-unikraft/issues"
+tags: "org:mirage"
+synopsis:
+  "Virtual package to ensure the Firecracker Unikraft backend is installed for the default cross compiler"
+description:
+  "This virtual package ensures that the Firecracker backend is installed for the default `unikraft` ocamlfind cross toolchain."
+authors: "Samuel Hym"
+license: "MIT"
+depends: [
+  "ocaml-unikraft"
+  ("ocaml-unikraft-default-x86_64" & "ocaml-unikraft-backend-firecracker-x86_64") |
+  ("ocaml-unikraft-default-arm64" & "ocaml-unikraft-backend-firecracker-arm64")
+]
+available: os = "linux"
+x-maintenance-intent: ["(latest)"]
diff --git a/packages/ocaml-unikraft-backend-qemu-arm64/ocaml-unikraft-backend-qemu-arm64.0.20.0/opam b/packages/ocaml-unikraft-backend-qemu-arm64/ocaml-unikraft-backend-qemu-arm64.0.20.0/opam
new file mode 100644
index 000000000000..ea680c770785
--- /dev/null
+++ b/packages/ocaml-unikraft-backend-qemu-arm64/ocaml-unikraft-backend-qemu-arm64.0.20.0/opam
@@ -0,0 +1,39 @@
+opam-version: "2.0"
+maintainer: "samuel@tarides.com"
+homepage: "https://github.com/mirage/ocaml-unikraft/"
+dev-repo: "git+https://github.com/mirage/ocaml-unikraft.git"
+bug-reports: "https://github.com/mirage/ocaml-unikraft/issues"
+tags: "org:mirage"
+synopsis: "QEMU/arm64 Unikraft backend for OCaml"
+authors: ["Samuel Hym" "Unikraft contributors"]
+license: ["MIT" "BSD-3-Clause" "GPL-2.0-only"]
+depends: [
+  "unikraft" {= version}
+  "unikraft-musl" {= version}
+  "conf-aarch64-linux-gnu-gcc" {arch != "arm64"}
+]
+depopts: [
+  "ocaml-unikraft-option-debug"
+]
+build: [
+  [
+    make
+    "-j%{jobs}%"
+    "UNIKRAFT=%{unikraft:lib}%"
+    "UNIKRAFTMUSL=%{unikraft-musl:lib}%"
+    "OCUKPLAT=qemu"
+    "OCUKARCH=arm64"
+    "OCUKEXTLIBS=musl"
+    "OCUKCONFIGOPTS+=debug" {ocaml-unikraft-option-debug:installed}
+    "UK_CFLAGS=-std=gnu11"
+    "%{name}%.install"
+  ]
+]
+url {
+  src:
+    "https://github.com/mirage/ocaml-unikraft/archive/refs/tags/v1.1.0.tar.gz"
+  checksum:
+    "sha256=97b9bdfd07ed0f031954138adbace930790d064ed3a590b9ff46f32f2433fde4"
+}
+available: os = "linux"
+x-maintenance-intent: ["(latest)"]
diff --git a/packages/ocaml-unikraft-backend-qemu-x86_64/ocaml-unikraft-backend-qemu-x86_64.0.20.0/opam b/packages/ocaml-unikraft-backend-qemu-x86_64/ocaml-unikraft-backend-qemu-x86_64.0.20.0/opam
new file mode 100644
index 000000000000..f7e001e4f086
--- /dev/null
+++ b/packages/ocaml-unikraft-backend-qemu-x86_64/ocaml-unikraft-backend-qemu-x86_64.0.20.0/opam
@@ -0,0 +1,39 @@
+opam-version: "2.0"
+maintainer: "samuel@tarides.com"
+homepage: "https://github.com/mirage/ocaml-unikraft/"
+dev-repo: "git+https://github.com/mirage/ocaml-unikraft.git"
+bug-reports: "https://github.com/mirage/ocaml-unikraft/issues"
+tags: "org:mirage"
+synopsis: "QEMU/x86_64 Unikraft backend for OCaml"
+authors: ["Samuel Hym" "Unikraft contributors"]
+license: ["MIT" "BSD-3-Clause" "GPL-2.0-only"]
+depends: [
+  "unikraft" {= version}
+  "unikraft-musl" {= version}
+  "conf-x86_64-linux-gnu-gcc" {arch != "x86_64"}
+]
+depopts: [
+  "ocaml-unikraft-option-debug"
+]
+build: [
+  [
+    make
+    "-j%{jobs}%"
+    "UNIKRAFT=%{unikraft:lib}%"
+    "UNIKRAFTMUSL=%{unikraft-musl:lib}%"
+    "OCUKPLAT=qemu"
+    "OCUKARCH=x86_64"
+    "OCUKEXTLIBS=musl"
+    "OCUKCONFIGOPTS+=debug" {ocaml-unikraft-option-debug:installed}
+    "UK_CFLAGS=-std=gnu11"
+    "%{name}%.install"
+  ]
+]
+url {
+  src:
+    "https://github.com/mirage/ocaml-unikraft/archive/refs/tags/v1.1.0.tar.gz"
+  checksum:
+    "sha256=97b9bdfd07ed0f031954138adbace930790d064ed3a590b9ff46f32f2433fde4"
+}
+available: os = "linux"
+x-maintenance-intent: ["(latest)"]
diff --git a/packages/ocaml-unikraft-backend-qemu/ocaml-unikraft-backend-qemu.0.20.0/opam b/packages/ocaml-unikraft-backend-qemu/ocaml-unikraft-backend-qemu.0.20.0/opam
new file mode 100644
index 000000000000..20e02edfcb93
--- /dev/null
+++ b/packages/ocaml-unikraft-backend-qemu/ocaml-unikraft-backend-qemu.0.20.0/opam
@@ -0,0 +1,19 @@
+opam-version: "2.0"
+maintainer: "samuel@tarides.com"
+homepage: "https://github.com/mirage/ocaml-unikraft/"
+dev-repo: "git+https://github.com/mirage/ocaml-unikraft.git"
+bug-reports: "https://github.com/mirage/ocaml-unikraft/issues"
+tags: "org:mirage"
+synopsis:
+  "Virtual package to ensure the QEMU Unikraft backend is installed for the default cross compiler"
+description:
+  "This virtual package ensures that the QEMU backend is installed for the default `unikraft` ocamlfind cross toolchain."
+authors: "Samuel Hym"
+license: "MIT"
+depends: [
+  "ocaml-unikraft"
+  ("ocaml-unikraft-default-x86_64" & "ocaml-unikraft-backend-qemu-x86_64") |
+  ("ocaml-unikraft-default-arm64" & "ocaml-unikraft-backend-qemu-arm64")
+]
+available: os = "linux"
+x-maintenance-intent: ["(latest)"]
diff --git a/packages/ocaml-unikraft-default-arm64/ocaml-unikraft-default-arm64.1.1.0/opam b/packages/ocaml-unikraft-default-arm64/ocaml-unikraft-default-arm64.1.1.0/opam
new file mode 100644
index 000000000000..7265fad95c92
--- /dev/null
+++ b/packages/ocaml-unikraft-default-arm64/ocaml-unikraft-default-arm64.1.1.0/opam
@@ -0,0 +1,25 @@
+opam-version: "2.0"
+maintainer: "samuel@tarides.com"
+homepage: "https://github.com/mirage/ocaml-unikraft/"
+dev-repo: "git+https://github.com/mirage/ocaml-unikraft.git"
+bug-reports: "https://github.com/mirage/ocaml-unikraft/issues"
+tags: "org:mirage"
+synopsis:
+  "OCaml default cross compiler to the freestanding Unikraft arm64 backends"
+description:
+  "This package provides an OCaml cross compiler, suitable for linking with a Unikraft arm64 unikernel, as the default `unikraft` ocamlfind toolchain."
+authors: "Samuel Hym"
+license: "MIT"
+depends: ["ocaml-unikraft-arm64" "ocamlfind"]
+conflict-class: "ocaml-unikraft-default"
+build: [
+  [make "prefix=%{prefix}%" "OCUKARCH=arm64" "%{name}%.install"]
+]
+url {
+  src:
+    "https://github.com/mirage/ocaml-unikraft/archive/refs/tags/v1.1.0.tar.gz"
+  checksum:
+    "sha256=97b9bdfd07ed0f031954138adbace930790d064ed3a590b9ff46f32f2433fde4"
+}
+available: os = "linux"
+x-maintenance-intent: ["(latest)"]
diff --git a/packages/ocaml-unikraft-default-x86_64/ocaml-unikraft-default-x86_64.1.1.0/opam b/packages/ocaml-unikraft-default-x86_64/ocaml-unikraft-default-x86_64.1.1.0/opam
new file mode 100644
index 000000000000..f383dd658651
--- /dev/null
+++ b/packages/ocaml-unikraft-default-x86_64/ocaml-unikraft-default-x86_64.1.1.0/opam
@@ -0,0 +1,25 @@
+opam-version: "2.0"
+maintainer: "samuel@tarides.com"
+homepage: "https://github.com/mirage/ocaml-unikraft/"
+dev-repo: "git+https://github.com/mirage/ocaml-unikraft.git"
+bug-reports: "https://github.com/mirage/ocaml-unikraft/issues"
+tags: "org:mirage"
+synopsis:
+  "OCaml default cross compiler to the freestanding Unikraft x86_64 backends"
+description:
+  "This package provides an OCaml cross compiler, suitable for linking with a Unikraft x86_64 unikernel, as the default `unikraft` ocamlfind toolchain."
+authors: "Samuel Hym"
+license: "MIT"
+depends: ["ocaml-unikraft-x86_64" "ocamlfind"]
+conflict-class: "ocaml-unikraft-default"
+build: [
+  [make "prefix=%{prefix}%" "OCUKARCH=x86_64" "%{name}%.install"]
+]
+url {
+  src:
+    "https://github.com/mirage/ocaml-unikraft/archive/refs/tags/v1.1.0.tar.gz"
+  checksum:
+    "sha256=97b9bdfd07ed0f031954138adbace930790d064ed3a590b9ff46f32f2433fde4"
+}
+available: os = "linux"
+x-maintenance-intent: ["(latest)"]
diff --git a/packages/ocaml-unikraft-option-debug/ocaml-unikraft-option-debug.0.20.0/opam b/packages/ocaml-unikraft-option-debug/ocaml-unikraft-option-debug.0.20.0/opam
new file mode 100644
index 000000000000..629634e608a2
--- /dev/null
+++ b/packages/ocaml-unikraft-option-debug/ocaml-unikraft-option-debug.0.20.0/opam
@@ -0,0 +1,12 @@
+opam-version: "2.0"
+maintainer: "samuel@tarides.com"
+homepage: "https://github.com/mirage/ocaml-unikraft/"
+dev-repo: "git+https://github.com/mirage/ocaml-unikraft.git"
+bug-reports: "https://github.com/mirage/ocaml-unikraft/issues"
+tags: "org:mirage"
+synopsis:
+  "Virtual package to enable debugging in the Unikraft backends"
+authors: "Samuel Hym"
+license: "MIT"
+available: os = "linux"
+x-maintenance-intent: ["(latest)"]
diff --git a/packages/ocaml-unikraft-toolchain-arm64/ocaml-unikraft-toolchain-arm64.0.18.0/opam b/packages/ocaml-unikraft-toolchain-arm64/ocaml-unikraft-toolchain-arm64.0.18.0/opam
index b6a6535c15ab..f07ec04e6174 100644
--- a/packages/ocaml-unikraft-toolchain-arm64/ocaml-unikraft-toolchain-arm64.0.18.0/opam
+++ b/packages/ocaml-unikraft-toolchain-arm64/ocaml-unikraft-toolchain-arm64.0.18.0/opam
@@ -11,7 +11,8 @@ description:
 authors: "Samuel Hym"
 license: "MIT"
 depends: [
-  "ocaml-unikraft-backend-qemu-arm64" | "ocaml-unikraft-backend-firecracker-arm64"
+  "ocaml-unikraft-backend-qemu-arm64" {= version} |
+  "ocaml-unikraft-backend-firecracker-arm64" {= version}
 ]
 build: [
   [
diff --git a/packages/ocaml-unikraft-toolchain-arm64/ocaml-unikraft-toolchain-arm64.0.20.0/opam b/packages/ocaml-unikraft-toolchain-arm64/ocaml-unikraft-toolchain-arm64.0.20.0/opam
new file mode 100644
index 000000000000..28ecd7959f73
--- /dev/null
+++ b/packages/ocaml-unikraft-toolchain-arm64/ocaml-unikraft-toolchain-arm64.0.20.0/opam
@@ -0,0 +1,35 @@
+opam-version: "2.0"
+maintainer: "samuel@tarides.com"
+homepage: "https://github.com/mirage/ocaml-unikraft/"
+dev-repo: "git+https://github.com/mirage/ocaml-unikraft.git"
+bug-reports: "https://github.com/mirage/ocaml-unikraft/issues"
+tags: "org:mirage"
+synopsis:
+  "C toolchain to build an OCaml cross compiler to the freestanding Unikraft arm64 backends"
+description:
+  "This package provides a C toolchain to build an OCaml cross compiler, suitable for linking with a Unikraft arm64 unikernel."
+authors: "Samuel Hym"
+license: "MIT"
+depends: [
+  "ocaml-unikraft-backend-qemu-arm64" {= version} |
+  "ocaml-unikraft-backend-firecracker-arm64" {= version}
+]
+build: [
+  [
+    make
+    "-j%{jobs}%"
+    "LIB=%{lib}%"
+    "SHARE=%{share}%"
+    "OCUKARCH=arm64"
+    "%{name}%.install"
+  ]
+]
+url {
+  src:
+    "https://github.com/mirage/ocaml-unikraft/archive/refs/tags/v1.1.0.tar.gz"
+  checksum:
+    "sha256=97b9bdfd07ed0f031954138adbace930790d064ed3a590b9ff46f32f2433fde4"
+}
+available: os = "linux"
+x-maintenance-intent: ["(latest)"]
+x-ci-accept-failures: [ "alpine-3.22" "centos-9" "opensuse-15.6" "opensuse-tumbleweed" ]
diff --git a/packages/ocaml-unikraft-toolchain-x86_64/ocaml-unikraft-toolchain-x86_64.0.18.0/opam b/packages/ocaml-unikraft-toolchain-x86_64/ocaml-unikraft-toolchain-x86_64.0.18.0/opam
index 37e2faf09f18..d545507b0fe5 100644
--- a/packages/ocaml-unikraft-toolchain-x86_64/ocaml-unikraft-toolchain-x86_64.0.18.0/opam
+++ b/packages/ocaml-unikraft-toolchain-x86_64/ocaml-unikraft-toolchain-x86_64.0.18.0/opam
@@ -11,7 +11,8 @@ description:
 authors: "Samuel Hym"
 license: "MIT"
 depends: [
-  "ocaml-unikraft-backend-qemu-x86_64" | "ocaml-unikraft-backend-firecracker-x86_64"
+  "ocaml-unikraft-backend-qemu-x86_64" {= version} |
+  "ocaml-unikraft-backend-firecracker-x86_64" {= version}
 ]
 build: [
   [
diff --git a/packages/ocaml-unikraft-toolchain-x86_64/ocaml-unikraft-toolchain-x86_64.0.20.0/opam b/packages/ocaml-unikraft-toolchain-x86_64/ocaml-unikraft-toolchain-x86_64.0.20.0/opam
new file mode 100644
index 000000000000..a16a517f5299
--- /dev/null
+++ b/packages/ocaml-unikraft-toolchain-x86_64/ocaml-unikraft-toolchain-x86_64.0.20.0/opam
@@ -0,0 +1,34 @@
+opam-version: "2.0"
+maintainer: "samuel@tarides.com"
+homepage: "https://github.com/mirage/ocaml-unikraft/"
+dev-repo: "git+https://github.com/mirage/ocaml-unikraft.git"
+bug-reports: "https://github.com/mirage/ocaml-unikraft/issues"
+tags: "org:mirage"
+synopsis:
+  "C toolchain to build an OCaml cross compiler to the freestanding Unikraft x86_64 backends"
+description:
+  "This package provides a C toolchain to build an OCaml cross compiler, suitable for linking with a Unikraft x86_64 unikernel."
+authors: "Samuel Hym"
+license: "MIT"
+depends: [
+  "ocaml-unikraft-backend-qemu-x86_64" {= version} |
+  "ocaml-unikraft-backend-firecracker-x86_64" {= version}
+]
+build: [
+  [
+    make
+    "-j%{jobs}%"
+    "LIB=%{lib}%"
+    "SHARE=%{share}%"
+    "OCUKARCH=x86_64"
+    "%{name}%.install"
+  ]
+]
+url {
+  src:
+    "https://github.com/mirage/ocaml-unikraft/archive/refs/tags/v1.1.0.tar.gz"
+  checksum:
+    "sha256=97b9bdfd07ed0f031954138adbace930790d064ed3a590b9ff46f32f2433fde4"
+}
+available: os = "linux"
+x-maintenance-intent: ["(latest)"]
diff --git a/packages/ocaml-unikraft-x86_64/ocaml-unikraft-x86_64.1.1.0/opam b/packages/ocaml-unikraft-x86_64/ocaml-unikraft-x86_64.1.1.0/opam
new file mode 100644
index 000000000000..80a9dd1c23c4
--- /dev/null
+++ b/packages/ocaml-unikraft-x86_64/ocaml-unikraft-x86_64.1.1.0/opam
@@ -0,0 +1,42 @@
+opam-version: "2.0"
+maintainer: "samuel@tarides.com"
+homepage: "https://github.com/mirage/ocaml-unikraft/"
+dev-repo: "git+https://github.com/mirage/ocaml-unikraft.git"
+bug-reports: "https://github.com/mirage/ocaml-unikraft/issues"
+tags: "org:mirage"
+synopsis: "OCaml cross compiler to the freestanding Unikraft x86_64 backends"
+description:
+  "This package provides an OCaml cross compiler, suitable for linking with a Unikraft x86_64 unikernel."
+authors: "Samuel Hym"
+license: ["MIT" "LGPL-2.1-or-later WITH OCaml-LGPL-linking-exception"]
+depends: [
+  "ocaml" {>= "5.3.0" & <= "5.4.0"}
+  "ocaml-unikraft-toolchain-x86_64"
+  "ocamlfind"
+  "ocaml-src" {build}
+  "conf-git" {build}
+]
+build: [
+  [
+    make
+    "-j%{jobs}%"
+    "prefix=%{prefix}%"
+    "BIN=%{bin}%"
+    "LIB=%{lib}%"
+    "SHARE=%{share}%"
+    "OCUKARCH=x86_64"
+    "%{name}%.install"
+  ]
+]
+install: [
+  [make "install-ocaml"]
+]
+conflicts: ["ocaml-option-bytecode-only"]
+url {
+  src:
+    "https://github.com/mirage/ocaml-unikraft/archive/refs/tags/v1.1.0.tar.gz"
+  checksum:
+    "sha256=97b9bdfd07ed0f031954138adbace930790d064ed3a590b9ff46f32f2433fde4"
+}
+available: os = "linux"
+x-maintenance-intent: ["(latest)"]
diff --git a/packages/ocaml-unikraft/ocaml-unikraft.1.1.0/opam b/packages/ocaml-unikraft/ocaml-unikraft.1.1.0/opam
new file mode 100644
index 000000000000..124c0b74fac0
--- /dev/null
+++ b/packages/ocaml-unikraft/ocaml-unikraft.1.1.0/opam
@@ -0,0 +1,15 @@
+opam-version: "2.0"
+maintainer: "samuel@tarides.com"
+homepage: "https://github.com/mirage/ocaml-unikraft/"
+dev-repo: "git+https://github.com/mirage/ocaml-unikraft.git"
+bug-reports: "https://github.com/mirage/ocaml-unikraft/issues"
+tags: "org:mirage"
+synopsis:
+  "Virtual package to install one of the OCaml default cross compilers to the freestanding Unikraft backends"
+description:
+  "This virtual package ensures that an OCaml cross compiler is available for linking with a Unikraft unikernel as the default `unikraft` ocamlfind toolchain. Explicitly choose one among the ocaml-unikraft-default-* packages to control which one is actually installed."
+authors: "Samuel Hym"
+license: "MIT"
+depends: ["ocaml-unikraft-default-x86_64" | "ocaml-unikraft-default-arm64"]
+available: os = "linux"
+x-maintenance-intent: ["(latest)"]
diff --git a/packages/unikraft-musl/unikraft-musl.0.20.0/opam b/packages/unikraft-musl/unikraft-musl.0.20.0/opam
new file mode 100644
index 000000000000..460ac1e73560
--- /dev/null
+++ b/packages/unikraft-musl/unikraft-musl.0.20.0/opam
@@ -0,0 +1,26 @@
+opam-version: "2.0"
+synopsis: "Unikraft's wrapper for musl"
+description: "Source package for the musl wrapper for Unikraft"
+maintainer: "samuel@tarides.com"
+authors: "Unikraft contributors"
+license: ["MIT" "BSD-3-Clause"]
+homepage: "https://unikraft.org"
+bug-reports: "https://github.com/mirage/ocaml-unikraft/issues"
+tags: "org:mirage"
+install: [
+  ["rm" "-rf" ".github"]
+  ["cp" "-r" "." "%{_:lib}%"]
+]
+dev-repo: "git+https://github.com/unikraft/lib-musl.git"
+url {
+  src:
+    "https://github.com/mirage/unikraft-lib-musl/archive/refs/tags/v0.20.0.tar.gz"
+  checksum:
+    "sha256=2599591879bb771e8b5e33c33325a804cb20e854283614908ca872807450b820"
+}
+extra-source "musl-1.2.3.tar.gz" {
+  src: "https://www.musl-libc.org/releases/musl-1.2.3.tar.gz"
+  checksum:
+    "sha256=7d5b0b6062521e4627e099e4c9dc8248d32a30285e959b7eecaa780cf8cfd4a4"
+}
+x-maintenance-intent: ["(latest)"]
diff --git a/packages/unikraft/unikraft.0.20.0/opam b/packages/unikraft/unikraft.0.20.0/opam
new file mode 100644
index 000000000000..dc2ed194f58f
--- /dev/null
+++ b/packages/unikraft/unikraft.0.20.0/opam
@@ -0,0 +1,30 @@
+opam-version: "2.0"
+synopsis: "Unikraft sources"
+description: "Source package for Unikraft"
+maintainer: "samuel@tarides.com"
+authors: "Unikraft contributors"
+license: ["BSD-3-Clause" "MIT" "GPL-2.0-or-later" "GPL-2.0-only"]
+homepage: "https://unikraft.org"
+bug-reports: "https://github.com/mirage/ocaml-unikraft/issues"
+tags: "org:mirage"
+depends: [
+    "conf-bison"
+    "conf-flex"
+    "conf-python-3"
+]
+install: [
+  ["rm" "-rf" ".github" ".gitignore"]
+  ["cp" "-r" "." "%{_:lib}%"]
+]
+dev-repo: "git+https://github.com/unikraft/unikraft.git"
+url {
+  src:
+    "https://github.com/mirage/unikraft/archive/refs/tags/v0.20.0.tar.gz"
+  checksum:
+    "sha256=f1e97df806acbd1a0a31ce4ca385e44ab65a1732c92199bd9ef50de4ceca7c76"
+}
+available:
+  os = "linux" &
+  (arch = "arm64" | arch = "x86_64" | arch = "s390x" | arch = "riscv64" |
+   arch = "ppc64")
+x-maintenance-intent: ["(latest)"]