diff --git a/pkgs/by-name/un/unnix/package.nix b/pkgs/by-name/un/unnix/package.nix
new file mode 100644
index 000000000000..c088df964b67
--- /dev/null
+++ b/pkgs/by-name/un/unnix/package.nix
@@ -0,0 +1,70 @@
+{
+  lib,
+  stdenv,
+  rustPlatform,
+  fetchFromGitHub,
+  installShellFiles,
+  pkg-config,
+  withBubblewrap ? stdenv.isLinux,
+  makeBinaryWrapper,
+  xz,
+  zstd,
+  writableTmpDirAsHomeHook,
+  bubblewrap,
+}:
+
+rustPlatform.buildRustPackage (finalAttrs: {
+  pname = "unnix";
+  version = "0.1.1";
+  __structuredAttrs = true;
+
+  src = fetchFromGitHub {
+    owner = "figsoda";
+    repo = "unnix";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-ZmCagknLEJlAtoVfHrQZeb3CbxpT37J6Mvyxn/qQRmQ=";
+  };
+
+  cargoHash = "sha256-NXyB1Ic2EnLJPpFDn1idb5WYfS8gXzgvIRbQoJ3bsS8=";
+
+  nativeBuildInputs = [
+    installShellFiles
+    pkg-config
+  ]
+  ++ lib.optionals withBubblewrap [
+    makeBinaryWrapper
+  ];
+
+  buildInputs = [
+    xz
+    zstd
+  ];
+
+  # tests try to access ~/.cache/unnix
+  nativeCheckInputs = [
+    writableTmpDirAsHomeHook
+  ];
+
+  env = {
+    GENERATE_ARTIFACTS = "artifacts";
+    ZSTD_SYS_USE_PKG_CONFIG = true;
+  };
+
+  postInstall = ''
+    installManPage artifacts/*.1
+    installShellCompletion artifacts/unnix.{bash,fish} --zsh artifacts/_unnix
+  ''
+  + lib.optionalString withBubblewrap ''
+    wrapProgram $out/bin/unnix \
+      --prefix PATH : ${lib.makeBinPath [ bubblewrap ]}
+  '';
+
+  meta = {
+    description = "Reproducible Nix environments without installing Nix";
+    homepage = "https://github.com/figsoda/unnix";
+    changelog = "https://github.com/figsoda/unnix/blob/${finalAttrs.src.rev}/CHANGELOG.md";
+    license = lib.licenses.mpl20;
+    maintainers = with lib.maintainers; [ figsoda ];
+    mainProgram = "unnix";
+  };
+})