diff --git a/Cargo.lock b/Cargo.lock
index dceccaa87..21a661c00 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -64,6 +64,51 @@ version = "1.0.66"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "216261ddc8289130e551ddcd5ce8a064710c0d064a4d2895c67151c92b5443f6"
 
+[[package]]
+name = "askama"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fb98f10f371286b177db5eeb9a6e5396609555686a35e1d4f7b9a9c6d8af0139"
+dependencies = [
+ "askama_derive",
+ "askama_escape",
+ "askama_shared",
+]
+
+[[package]]
+name = "askama_derive"
+version = "0.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87bf87e6e8b47264efa9bde63d6225c6276a52e05e91bf37eaa8afd0032d6b71"
+dependencies = [
+ "askama_shared",
+ "proc-macro2",
+ "syn",
+]
+
+[[package]]
+name = "askama_escape"
+version = "0.10.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "619743e34b5ba4e9703bba34deac3427c72507c7159f5fd030aea8cac0cfe341"
+
+[[package]]
+name = "askama_shared"
+version = "0.12.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf722b94118a07fcbc6640190f247334027685d4e218b794dbfe17c32bf38ed0"
+dependencies = [
+ "askama_escape",
+ "mime",
+ "mime_guess",
+ "nom",
+ "proc-macro2",
+ "quote",
+ "serde",
+ "syn",
+ "toml",
+]
+
 [[package]]
 name = "async-io"
 version = "1.10.0"
@@ -132,6 +177,15 @@ version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9e1b586273c5702936fe7b7d6896644d8be71e6314cfe09d3167c95f712589e8"
 
+[[package]]
+name = "bincode"
+version = "1.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b1f45e9417d87227c7a56d22e471c6206462cba514c7590c09aff4cf6d1ddcad"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -930,7 +984,7 @@ version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "67f07131a2b944c2b42b6a58104600ef049c11df5454478d2b44ff5dfe58d149"
 dependencies = [
- "goblin",
+ "goblin 0.6.0",
 ]
 
 [[package]]
@@ -1141,6 +1195,17 @@ dependencies = [
  "regex",
 ]
 
+[[package]]
+name = "goblin"
+version = "0.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a7666983ed0dd8d21a6f6576ee00053ca0926fb281a5522577a4dbd0f1b54143"
+dependencies = [
+ "log",
+ "plain",
+ "scroll",
+]
+
 [[package]]
 name = "goblin"
 version = "0.6.0"
@@ -1348,7 +1413,7 @@ checksum = "7580a02d700ecc9e06c72b7aace6e74427a56a69310f18fdd420a5fac3832969"
 dependencies = [
  "fs-err",
  "glob",
- "goblin",
+ "goblin 0.6.0",
 ]
 
 [[package]]
@@ -1433,7 +1498,7 @@ dependencies = [
  "flate2",
  "fs-err",
  "glob",
- "goblin",
+ "goblin 0.6.0",
  "human-panic",
  "ignore",
  "indoc",
@@ -1467,6 +1532,7 @@ dependencies = [
  "tracing",
  "tracing-subscriber",
  "trycmd",
+ "uniffi_bindgen",
  "ureq",
  "zip",
 ]
@@ -1511,6 +1577,12 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "minimal-lexical"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
+
 [[package]]
 name = "miniz_oxide"
 version = "0.5.4"
@@ -1586,6 +1658,16 @@ dependencies = [
  "memoffset",
 ]
 
+[[package]]
+name = "nom"
+version = "7.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a8903e5a29a317527874d0402f867152a3d21c908bb0b933e416c65e301d4c36"
+dependencies = [
+ "memchr",
+ "minimal-lexical",
+]
+
 [[package]]
 name = "normalize-line-endings"
 version = "0.3.0"
@@ -1848,6 +1930,12 @@ dependencies = [
  "windows-sys 0.42.0",
 ]
 
+[[package]]
+name = "paste"
+version = "1.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b1de2e551fb905ac83f73f7aedf2f0cb4a0da7e35efa24a202a936269f1f18e1"
+
 [[package]]
 name = "path-slash"
 version = "0.2.1"
@@ -2884,6 +2972,38 @@ version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c0edd1e5b14653f783770bce4a4dabb4a5108a5370a5f5d8cfe8710c361f6c8b"
 
+[[package]]
+name = "uniffi_bindgen"
+version = "0.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "12cc4af3c0180c7e86c4a3acf2b6587af04ba2567b1e948993df10f421796621"
+dependencies = [
+ "anyhow",
+ "askama",
+ "bincode",
+ "camino",
+ "clap 3.2.23",
+ "fs-err",
+ "goblin 0.5.4",
+ "heck",
+ "once_cell",
+ "paste",
+ "serde",
+ "serde_json",
+ "toml",
+ "uniffi_meta",
+ "weedle2",
+]
+
+[[package]]
+name = "uniffi_meta"
+version = "0.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cd9417cc653937681436b93838d8c5f97a5b8c58697813982ee8810bd1dc3b57"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "untrusted"
 version = "0.7.1"
@@ -3068,6 +3188,15 @@ dependencies = [
  "webpki",
 ]
 
+[[package]]
+name = "weedle2"
+version = "4.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2e79c5206e1f43a2306fd64bdb95025ee4228960f2e6c5a8b173f3caaf807741"
+dependencies = [
+ "nom",
+]
+
 [[package]]
 name = "wepoll-ffi"
 version = "0.1.2"
diff --git a/Cargo.toml b/Cargo.toml
index f22761319..e71507bbe 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -28,6 +28,7 @@ cargo-options = "0.5.2"
 cargo-zigbuild = "0.14.1"
 cargo-xwin = { version = "0.12.2", default-features = false }
 cbindgen = { version = "0.24.2", default-features = false }
+uniffi_bindgen = "0.21.0"
 flate2 = "1.0.18"
 goblin = "0.6.0"
 human-panic = { version = "1.0.3", optional = true }
diff --git a/Changelog.md b/Changelog.md
index 972dfea9e..ceb3b6508 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -24,6 +24,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Add support for 32-bit x86 FreeBSD target in [#1254](https://github.com/PyO3/maturin/pull/1254)
 * Add `[tool.maturin.include]` and `[tool.maturin.exclude]` and deprecate `[tool.maturin.sdist-include]` [#1255](https://github.com/PyO3/maturin/pull/1255)
 * Ignore sdist tar ball instead of error out in [#1259](https://github.com/PyO3/maturin/pull/1259)
+* Add support for [`uniffi`](https://github.com/mozilla/uniffi-rs) bindings in [#1275](https://github.com/PyO3/maturin/pull/1275)
 
 ## [0.13.7] - 2022-10-29
 
diff --git a/README.md b/README.md
index 83c20ff4d..559d54bb3 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ _formerly pyo3-pack_
 [![Maturin User Guide](https://img.shields.io/badge/user-guide-brightgreen?logo=readthedocs&style=flat-square)](https://maturin.rs)
 [![Chat on Gitter](https://img.shields.io/gitter/room/nwjs/nw.js.svg?logo=gitter&style=flat-square)](https://gitter.im/PyO3/Lobby)
 
-Build and publish crates with pyo3, rust-cpython and cffi bindings as well as rust binaries as python packages.
+Build and publish crates with pyo3, rust-cpython, cffi and uniffi bindings as well as rust binaries as python packages.
 
 This project is meant as a zero configuration replacement for [setuptools-rust](https://github.com/PyO3/setuptools-rust) and [milksnake](https://github.com/getsentry/milksnake).
 It supports building wheels for python 3.5+ on windows, linux, mac and freebsd, can upload them to [pypi](https://pypi.org/) and has basic pypy support.
diff --git a/src/build_context.rs b/src/build_context.rs
index 1a9bec9dc..5b0e39f80 100644
--- a/src/build_context.rs
+++ b/src/build_context.rs
@@ -4,7 +4,7 @@ use crate::build_options::CargoOptions;
 use crate::compile::warn_missing_py_init;
 use crate::module_writer::{
     add_data, write_bin, write_bindings_module, write_cffi_module, write_python_part,
-    write_wasm_launcher, WheelWriter,
+    write_uniffi_module, write_wasm_launcher, WheelWriter,
 };
 use crate::project_layout::ProjectLayout;
 use crate::python_interpreter::InterpreterKind;
@@ -29,8 +29,6 @@ use std::path::{Path, PathBuf};
 /// The way the rust code is used in the wheel
 #[derive(Clone, Debug, PartialEq, Eq)]
 pub enum BridgeModel {
-    /// A native module with c bindings, i.e. `#[no_mangle] extern "C" <some item>`
-    Cffi,
     /// A rust binary to be shipped a python package
     /// The String is the name of the bindings
     /// providing crate, e.g. pyo3, the number is the minimum minor python version
@@ -42,6 +40,10 @@ pub enum BridgeModel {
     /// for all cpython versions (pypy still needs multiple versions).
     /// The numbers are the minimum major and minor version
     BindingsAbi3(u8, u8),
+    /// A native module with c bindings, i.e. `#[no_mangle] extern "C" <some item>`
+    Cffi,
+    /// A native module generated from uniffi
+    UniFfi,
 }
 
 impl BridgeModel {
@@ -71,11 +73,12 @@ impl BridgeModel {
 impl Display for BridgeModel {
     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
         match self {
-            BridgeModel::Cffi => write!(f, "cffi"),
             BridgeModel::Bin(Some((name, _))) => write!(f, "{} bin", name),
             BridgeModel::Bin(None) => write!(f, "bin"),
             BridgeModel::Bindings(name, _) => write!(f, "{}", name),
             BridgeModel::BindingsAbi3(..) => write!(f, "pyo3"),
+            BridgeModel::Cffi => write!(f, "cffi"),
+            BridgeModel::UniFfi => write!(f, "uniffi"),
         }
     }
 }
@@ -199,7 +202,6 @@ impl BuildContext {
             .context("Failed to create the target directory for the wheels")?;
 
         let wheels = match &self.bridge {
-            BridgeModel::Cffi => self.build_cffi_wheel()?,
             BridgeModel::Bin(None) => self.build_bin_wheel(None)?,
             BridgeModel::Bin(Some(..)) => self.build_bin_wheels(&self.interpreter)?,
             BridgeModel::Bindings(..) => self.build_binding_wheels(&self.interpreter)?,
@@ -240,6 +242,8 @@ impl BuildContext {
                 }
                 built_wheels
             }
+            BridgeModel::Cffi => self.build_cffi_wheel()?,
+            BridgeModel::UniFfi => self.build_uniffi_wheel()?,
         };
 
         Ok(wheels)
@@ -751,6 +755,61 @@ impl BuildContext {
         Ok(wheels)
     }
 
+    fn write_uniffi_wheel(
+        &self,
+        artifact: BuildArtifact,
+        platform_tags: &[PlatformTag],
+        ext_libs: Vec<Library>,
+    ) -> Result<BuiltWheelMetadata> {
+        let (tag, tags) = self
+            .target
+            .get_universal_tags(platform_tags, self.universal2)?;
+
+        let mut writer = WheelWriter::new(
+            &tag,
+            &self.out,
+            &self.metadata21,
+            &tags,
+            self.excludes(Format::Wheel)?,
+        )?;
+        self.add_external_libs(&mut writer, &[&artifact], &[ext_libs])?;
+
+        write_uniffi_module(
+            &mut writer,
+            &self.project_layout,
+            self.manifest_path.parent().unwrap(),
+            &self.target_dir,
+            &self.module_name,
+            &artifact.path,
+            self.target.target_os(),
+            self.editable,
+            self.pyproject_toml.as_ref(),
+        )?;
+
+        self.add_pth(&mut writer)?;
+        add_data(&mut writer, self.project_layout.data.as_deref())?;
+        let wheel_path = writer.finish()?;
+        Ok((wheel_path, "py3".to_string()))
+    }
+
+    /// Builds a wheel with uniffi bindings
+    pub fn build_uniffi_wheel(&self) -> Result<Vec<BuiltWheelMetadata>> {
+        let mut wheels = Vec::new();
+        let artifact = self.compile_cdylib(None, None)?;
+        let (policy, external_libs) = self.auditwheel(&artifact, &self.platform_tag, None)?;
+        let platform_tags = if self.platform_tag.is_empty() {
+            vec![policy.platform_tag()]
+        } else {
+            self.platform_tag.clone()
+        };
+        let (wheel_path, tag) = self.write_uniffi_wheel(artifact, &platform_tags, external_libs)?;
+
+        println!("📦 Built wheel to {}", wheel_path.display());
+        wheels.push((wheel_path, tag));
+
+        Ok(wheels)
+    }
+
     fn write_bin_wheel(
         &self,
         python_interpreter: Option<&PythonInterpreter>,
diff --git a/src/build_options.rs b/src/build_options.rs
index c6836a1e7..1faccafa3 100644
--- a/src/build_options.rs
+++ b/src/build_options.rs
@@ -162,7 +162,7 @@ pub struct BuildOptions {
     pub find_interpreter: bool,
 
     /// Which kind of bindings to use.
-    #[arg(short, long, value_parser = ["pyo3", "pyo3-ffi", "rust-cpython", "cffi", "bin"])]
+    #[arg(short, long, value_parser = ["pyo3", "pyo3-ffi", "rust-cpython", "cffi", "uniffi", "bin"])]
     pub bindings: Option<String>,
 
     /// The directory to store the built wheels in. Defaults to a new "wheels"
@@ -347,7 +347,7 @@ impl BuildOptions {
                 println!("🐍 Using {} to generate the cffi bindings", interpreter);
                 Ok(vec![interpreter])
             }
-            BridgeModel::Bin(None) => Ok(vec![]),
+            BridgeModel::Bin(None) | BridgeModel::UniFfi => Ok(vec![]),
             BridgeModel::BindingsAbi3(major, minor) => {
                 if target.is_windows() {
                     // Ideally, we wouldn't want to use any python interpreter without abi3 at all.
@@ -838,6 +838,8 @@ fn find_bindings(
         Some(("pyo3-ffi".to_string(), minor))
     } else if deps.contains_key("cpython") {
         Some(("rust-cpython".to_string(), MINIMUM_PYTHON_MINOR))
+    } else if deps.contains_key("uniffi") {
+        Some(("uniffi".to_string(), MINIMUM_PYTHON_MINOR))
     } else {
         None
     }
@@ -860,7 +862,7 @@ pub fn find_bridge(cargo_metadata: &Metadata, bridge: Option<&str>) -> Result<Br
         .iter()
         .filter_map(|pkg| {
             let name = &pkg.name;
-            if name == "pyo3" || name == "pyo3-ffi" || name == "cpython" {
+            if name == "pyo3" || name == "pyo3-ffi" || name == "cpython" || name == "uniffi" {
                 Some((name.as_ref(), pkg))
             } else {
                 None
@@ -885,6 +887,8 @@ pub fn find_bridge(cargo_metadata: &Metadata, bridge: Option<&str>) -> Result<Br
     let bridge = if let Some(bindings) = bridge {
         if bindings == "cffi" {
             BridgeModel::Cffi
+        } else if bindings == "uniffi" {
+            BridgeModel::UniFfi
         } else if bindings == "bin" {
             BridgeModel::Bin(find_bindings(&deps, &packages))
         } else {
@@ -900,6 +904,8 @@ pub fn find_bridge(cargo_metadata: &Metadata, bridge: Option<&str>) -> Result<Br
     } else if let Some((bindings, minor)) = find_bindings(&deps, &packages) {
         if !targets.contains(&"cdylib") && targets.contains(&"bin") {
             BridgeModel::Bin(Some((bindings, minor)))
+        } else if bindings == "uniffi" {
+            BridgeModel::UniFfi
         } else {
             BridgeModel::Bindings(bindings, minor)
         }
diff --git a/src/compile.rs b/src/compile.rs
index db5aadb4b..32ce5eb77 100644
--- a/src/compile.rs
+++ b/src/compile.rs
@@ -200,7 +200,10 @@ fn compile_target(
         BridgeModel::Bin(..) => {
             cargo_rustc.bin.push(binding_target.name.clone());
         }
-        BridgeModel::Cffi | BridgeModel::Bindings(..) | BridgeModel::BindingsAbi3(..) => {
+        BridgeModel::Cffi
+        | BridgeModel::UniFfi
+        | BridgeModel::Bindings(..)
+        | BridgeModel::BindingsAbi3(..) => {
             cargo_rustc.lib = true;
             // https://github.com/rust-lang/rust/issues/59302#issue-422994250
             // We must only do this for libraries as it breaks binaries
diff --git a/src/main.rs b/src/main.rs
index 086654d69..d40d11ed6 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -72,8 +72,13 @@ enum Opt {
     ///
     /// Note that this command doesn't create entrypoints
     Develop {
-        /// Which kind of bindings to use. Possible values are pyo3, rust-cpython, cffi and bin
-        #[arg(short = 'b', long = "bindings", alias = "binding-crate")]
+        /// Which kind of bindings to use
+        #[arg(
+            short = 'b',
+            long = "bindings",
+            alias = "binding-crate",
+            value_parser = ["pyo3", "pyo3-ffi", "rust-cpython", "cffi", "uniffi", "bin"]
+        )]
         bindings: Option<String>,
         /// Pass --release to cargo
         #[arg(short = 'r', long)]
@@ -258,7 +263,7 @@ fn pep517(subcommand: Pep517Command) -> Result<()> {
                         .get_platform_tag(&[PlatformTag::Linux], context.universal2)?;
                     vec![format!("cp{}{}-abi3-{}", major, minor, platform)]
                 }
-                BridgeModel::Bin(None) | BridgeModel::Cffi => {
+                BridgeModel::Bin(None) | BridgeModel::Cffi | BridgeModel::UniFfi => {
                     context
                         .target
                         .get_universal_tags(&[PlatformTag::Linux], context.universal2)?
diff --git a/src/module_writer.rs b/src/module_writer.rs
index 91a2ec14a..15dc5faed 100644
--- a/src/module_writer.rs
+++ b/src/module_writer.rs
@@ -1,5 +1,6 @@
 //! The wheel format is (mostly) specified in PEP 427
 use crate::project_layout::ProjectLayout;
+use crate::target::Os;
 use crate::{
     pyproject_toml::Format, BridgeModel, Metadata21, PyProjectToml, PythonInterpreter, Target,
 };
@@ -812,6 +813,120 @@ pub fn write_cffi_module(
     Ok(())
 }
 
+fn generate_uniffi_bindings(crate_dir: &Path, target_dir: &Path) -> Result<PathBuf> {
+    let binding_dir = target_dir.join("maturin").join("uniffi");
+    fs::create_dir_all(&binding_dir)?;
+
+    let pattern = crate_dir.join("src").join("*.udl");
+    let udls = glob::glob(pattern.to_str().unwrap())?
+        .map(|p| p.unwrap())
+        .collect::<Vec<_>>();
+    if udls.is_empty() {
+        bail!("No UDL files found in {}", crate_dir.join("src").display());
+    } else if udls.len() > 1 {
+        bail!(
+            "Multiple UDL files found in {}",
+            crate_dir.join("src").display()
+        );
+    }
+
+    let udl = &udls[0];
+    uniffi_bindgen::generate_bindings(
+        udl.as_path().try_into().expect("path contains non-utf8"),
+        None,
+        vec!["python"],
+        Some(
+            binding_dir
+                .as_path()
+                .try_into()
+                .expect("path contains non-utf8"),
+        ),
+        None,
+        false,
+    )?;
+    let py_binding_name = udl.file_stem().unwrap();
+    let py_binding = binding_dir.join(py_binding_name).with_extension("py");
+    Ok(py_binding)
+}
+
+/// Creates the uniffi module with the shared library
+#[allow(clippy::too_many_arguments)]
+pub fn write_uniffi_module(
+    writer: &mut impl ModuleWriter,
+    project_layout: &ProjectLayout,
+    crate_dir: &Path,
+    target_dir: &Path,
+    module_name: &str,
+    artifact: &Path,
+    target_os: Os,
+    editable: bool,
+    pyproject_toml: Option<&PyProjectToml>,
+) -> Result<()> {
+    let uniffi_binding = generate_uniffi_bindings(crate_dir, target_dir)?;
+    let binding_name = uniffi_binding.file_stem().unwrap().to_str().unwrap();
+    let py_init = format!("from .{} import *  # NOQA\n", binding_name);
+    // uniffi bindings hardcoded the extension filenames
+    let dylib_name = match target_os {
+        Os::Macos => format!("libuniffi_{}.dylib", binding_name),
+        Os::Windows => format!("uniffi_{}.dll", binding_name),
+        _ => format!("libuniffi_{}.so", binding_name),
+    };
+
+    let module;
+
+    if let Some(python_module) = &project_layout.python_module {
+        if !editable {
+            write_python_part(writer, python_module, pyproject_toml)
+                .context("Failed to add the python module to the package")?;
+        }
+
+        if editable {
+            let target = python_module.join(&dylib_name);
+            fs::copy(artifact, &target).context(format!(
+                "Failed to copy {} to {}",
+                artifact.display(),
+                target.display()
+            ))?;
+
+            let target = python_module.join(binding_name).with_extension("py");
+            fs::copy(&uniffi_binding, &target).context(format!(
+                "Failed to copy {} to {}",
+                uniffi_binding.display(),
+                target.display()
+            ))?;
+        }
+
+        let relative = project_layout
+            .rust_module
+            .strip_prefix(python_module.parent().unwrap())
+            .unwrap();
+        module = relative.join(&project_layout.extension_name);
+        if !editable {
+            writer.add_directory(&module)?;
+        }
+    } else {
+        module = PathBuf::from(module_name);
+        writer.add_directory(&module)?;
+        writer.add_bytes(&module.join("__init__.py"), py_init.as_bytes())?;
+        let type_stub = project_layout
+            .rust_module
+            .join(format!("{}.pyi", module_name));
+        if type_stub.exists() {
+            println!("📖 Found type stub file at {}.pyi", module_name);
+            writer.add_file(&module.join("__init__.pyi"), type_stub)?;
+            writer.add_bytes(&module.join("py.typed"), b"")?;
+        }
+    };
+
+    if !editable || project_layout.python_module.is_none() {
+        let target = module.join(binding_name).with_extension("py");
+        writer.add_file(&target, uniffi_binding)?;
+        writer.add_file_with_permissions(&module.join(dylib_name), artifact, 0o755)?;
+    }
+
+    Ok(())
+}
+
 /// Adds a data directory with a scripts directory with the binary inside it
 pub fn write_bin(
     writer: &mut impl ModuleWriter,
diff --git a/test-crates/uniffi-mixed/.gitignore b/test-crates/uniffi-mixed/.gitignore
new file mode 100644
index 000000000..0ada524f5
--- /dev/null
+++ b/test-crates/uniffi-mixed/.gitignore
@@ -0,0 +1,4 @@
+uniffi_mixed/math.py
+uniffi_mixed/*.dylib
+uniffi_mixed/*.dll
+uniffi_mixed/*.so
diff --git a/test-crates/uniffi-mixed/Cargo.lock b/test-crates/uniffi-mixed/Cargo.lock
new file mode 100644
index 000000000..7f2aed843
--- /dev/null
+++ b/test-crates/uniffi-mixed/Cargo.lock
@@ -0,0 +1,603 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
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diff --git a/test-crates/uniffi-mixed/Cargo.toml b/test-crates/uniffi-mixed/Cargo.toml
new file mode 100644
index 000000000..92e9f6ee7
--- /dev/null
+++ b/test-crates/uniffi-mixed/Cargo.toml
@@ -0,0 +1,17 @@
+[package]
+name = "uniffi-mixed"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+name = "uniffi_mixed"
+crate-type = ["cdylib"]
+
+[dependencies]
+uniffi = "0.21.0"
+uniffi_macros = "0.21.0"
+
+[build-dependencies]
+uniffi_build = { version = "0.21.0", features = ["builtin-bindgen"] }
diff --git a/test-crates/uniffi-mixed/build.rs b/test-crates/uniffi-mixed/build.rs
new file mode 100644
index 000000000..3fa862624
--- /dev/null
+++ b/test-crates/uniffi-mixed/build.rs
@@ -0,0 +1,3 @@
+fn main() {
+    uniffi_build::generate_scaffolding("./src/math.udl").unwrap();
+}
diff --git a/test-crates/uniffi-mixed/check_installed/check_installed.py b/test-crates/uniffi-mixed/check_installed/check_installed.py
new file mode 100644
index 000000000..4c0e558ea
--- /dev/null
+++ b/test-crates/uniffi-mixed/check_installed/check_installed.py
@@ -0,0 +1,7 @@
+#!/usr/bin/env python3
+
+import uniffi_mixed
+
+assert uniffi_mixed.add(1, 2) == 3
+
+print("SUCCESS")
diff --git a/test-crates/uniffi-mixed/pyproject.toml b/test-crates/uniffi-mixed/pyproject.toml
new file mode 100644
index 000000000..7824761af
--- /dev/null
+++ b/test-crates/uniffi-mixed/pyproject.toml
@@ -0,0 +1,3 @@
+[build-system]
+requires = ["maturin>=0.13,<0.14"]
+build-backend = "maturin"
\ No newline at end of file
diff --git a/test-crates/uniffi-mixed/src/lib.rs b/test-crates/uniffi-mixed/src/lib.rs
new file mode 100644
index 000000000..c379ab39c
--- /dev/null
+++ b/test-crates/uniffi-mixed/src/lib.rs
@@ -0,0 +1,5 @@
+fn add(a: u32, b: u32) -> u32 {
+    a + b
+}
+
+uniffi_macros::include_scaffolding!("math");
diff --git a/test-crates/uniffi-mixed/src/math.udl b/test-crates/uniffi-mixed/src/math.udl
new file mode 100644
index 000000000..b0359a10b
--- /dev/null
+++ b/test-crates/uniffi-mixed/src/math.udl
@@ -0,0 +1,3 @@
+namespace math {
+  u32 add(u32 a, u32 b);
+};
diff --git a/test-crates/uniffi-mixed/test_uniffi_mixed.py b/test-crates/uniffi-mixed/test_uniffi_mixed.py
new file mode 100644
index 000000000..94f8843aa
--- /dev/null
+++ b/test-crates/uniffi-mixed/test_uniffi_mixed.py
@@ -0,0 +1,5 @@
+import uniffi_mixed
+
+
+def test_add():
+    assert uniffi_mixed.add(1, 2) == 3
diff --git a/test-crates/uniffi-mixed/uniffi_mixed/__init__.py b/test-crates/uniffi-mixed/uniffi_mixed/__init__.py
new file mode 100644
index 000000000..513bf0250
--- /dev/null
+++ b/test-crates/uniffi-mixed/uniffi_mixed/__init__.py
@@ -0,0 +1 @@
+from .math import *  # NOQA
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new file mode 100644
index 000000000..d83e2ff41
--- /dev/null
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+checksum = "8d82e1a7758622a465f8cee077614c73484dac5b836c02ff6a40d5d1010324d7"
+dependencies = [
+ "serde",
+]
+
+[[package]]
+name = "unicase"
+version = "2.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "50f37be617794602aabbeee0be4f259dc1778fabe05e2d67ee8f79326d5cb4f6"
+dependencies = [
+ "version_check",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ceab39d59e4c9499d4e5a8ee0e2735b891bb7308ac83dfb4e80cad195c9f6f3"
+
+[[package]]
+name = "uniffi"
+version = "0.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f54af5ada67d1173457a99a7bb44a7917f63e7466764cb4714865c7a6678b830"
+dependencies = [
+ "anyhow",
+ "bytes",
+ "camino",
+ "cargo_metadata",
+ "log",
+ "once_cell",
+ "paste",
+ "static_assertions",
+ "uniffi_macros",
+]
+
+[[package]]
+name = "uniffi-pure"
+version = "0.1.0"
+dependencies = [
+ "uniffi",
+ "uniffi_build",
+ "uniffi_macros",
+]
+
+[[package]]
+name = "uniffi_bindgen"
+version = "0.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "12cc4af3c0180c7e86c4a3acf2b6587af04ba2567b1e948993df10f421796621"
+dependencies = [
+ "anyhow",
+ "askama",
+ "bincode",
+ "camino",
+ "clap",
+ "fs-err",
+ "goblin",
+ "heck",
+ "once_cell",
+ "paste",
+ "serde",
+ "serde_json",
+ "toml",
+ "uniffi_meta",
+ "weedle2",
+]
+
+[[package]]
+name = "uniffi_build"
+version = "0.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "510287c368a9386eb731ebe824a6fc6c82a105e20d020af1aa20519c1c1561db"
+dependencies = [
+ "anyhow",
+ "camino",
+ "uniffi_bindgen",
+]
+
+[[package]]
+name = "uniffi_macros"
+version = "0.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c8604503caa2cbcf271578dc51ca236d40e3b22e1514ffa2e638e2c39f6ad10"
+dependencies = [
+ "bincode",
+ "camino",
+ "fs-err",
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "serde",
+ "syn",
+ "toml",
+ "uniffi_build",
+ "uniffi_meta",
+]
+
+[[package]]
+name = "uniffi_meta"
+version = "0.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cd9417cc653937681436b93838d8c5f97a5b8c58697813982ee8810bd1dc3b57"
+dependencies = [
+ "serde",
+]
+
+[[package]]
+name = "version_check"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
+
+[[package]]
+name = "weedle2"
+version = "4.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2e79c5206e1f43a2306fd64bdb95025ee4228960f2e6c5a8b173f3caaf807741"
+dependencies = [
+ "nom",
+]
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-util"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
diff --git a/test-crates/uniffi-pure/Cargo.toml b/test-crates/uniffi-pure/Cargo.toml
new file mode 100644
index 000000000..2f63d5597
--- /dev/null
+++ b/test-crates/uniffi-pure/Cargo.toml
@@ -0,0 +1,17 @@
+[package]
+name = "uniffi-pure"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+name = "uniffi_pure"
+crate-type = ["cdylib"]
+
+[dependencies]
+uniffi = "0.21.0"
+uniffi_macros = "0.21.0"
+
+[build-dependencies]
+uniffi_build = { version = "0.21.0", features = ["builtin-bindgen"] }
\ No newline at end of file
diff --git a/test-crates/uniffi-pure/build.rs b/test-crates/uniffi-pure/build.rs
new file mode 100644
index 000000000..3fa862624
--- /dev/null
+++ b/test-crates/uniffi-pure/build.rs
@@ -0,0 +1,3 @@
+fn main() {
+    uniffi_build::generate_scaffolding("./src/math.udl").unwrap();
+}
diff --git a/test-crates/uniffi-pure/check_installed/check_installed.py b/test-crates/uniffi-pure/check_installed/check_installed.py
new file mode 100644
index 000000000..c71c9ad3f
--- /dev/null
+++ b/test-crates/uniffi-pure/check_installed/check_installed.py
@@ -0,0 +1,7 @@
+#!/usr/bin/env python3
+
+import uniffi_pure
+
+assert uniffi_pure.add(1, 2) == 3
+
+print("SUCCESS")
diff --git a/test-crates/uniffi-pure/pyproject.toml b/test-crates/uniffi-pure/pyproject.toml
new file mode 100644
index 000000000..7824761af
--- /dev/null
+++ b/test-crates/uniffi-pure/pyproject.toml
@@ -0,0 +1,3 @@
+[build-system]
+requires = ["maturin>=0.13,<0.14"]
+build-backend = "maturin"
\ No newline at end of file
diff --git a/test-crates/uniffi-pure/src/lib.rs b/test-crates/uniffi-pure/src/lib.rs
new file mode 100644
index 000000000..c379ab39c
--- /dev/null
+++ b/test-crates/uniffi-pure/src/lib.rs
@@ -0,0 +1,5 @@
+fn add(a: u32, b: u32) -> u32 {
+    a + b
+}
+
+uniffi_macros::include_scaffolding!("math");
diff --git a/test-crates/uniffi-pure/src/math.udl b/test-crates/uniffi-pure/src/math.udl
new file mode 100644
index 000000000..b0359a10b
--- /dev/null
+++ b/test-crates/uniffi-pure/src/math.udl
@@ -0,0 +1,3 @@
+namespace math {
+  u32 add(u32 a, u32 b);
+};
diff --git a/test-crates/uniffi-pure/test_uniffi_pure.py b/test-crates/uniffi-pure/test_uniffi_pure.py
new file mode 100644
index 000000000..a899f06e6
--- /dev/null
+++ b/test-crates/uniffi-pure/test_uniffi_pure.py
@@ -0,0 +1,5 @@
+import uniffi_pure
+
+
+def test_add():
+    assert uniffi_pure.add(1, 2) == 3
diff --git a/tests/cmd/build.stdout b/tests/cmd/build.stdout
index 1dcee50c6..64baecfeb 100644
--- a/tests/cmd/build.stdout
+++ b/tests/cmd/build.stdout
@@ -39,7 +39,7 @@ Options:
   -b, --bindings <BINDINGS>
           Which kind of bindings to use
           
-          [possible values: pyo3, pyo3-ffi, rust-cpython, cffi, bin]
+          [possible values: pyo3, pyo3-ffi, rust-cpython, cffi, uniffi, bin]
 
   -o, --out <OUT>
           The directory to store the built wheels in. Defaults to a new "wheels" directory in the
diff --git a/tests/cmd/develop.stdout b/tests/cmd/develop.stdout
index fed40fc95..963588bc7 100644
--- a/tests/cmd/develop.stdout
+++ b/tests/cmd/develop.stdout
@@ -10,7 +10,9 @@ Arguments:
 
 Options:
   -b, --bindings <BINDINGS>
-          Which kind of bindings to use. Possible values are pyo3, rust-cpython, cffi and bin
+          Which kind of bindings to use
+          
+          [possible values: pyo3, pyo3-ffi, rust-cpython, cffi, uniffi, bin]
 
   -r, --release
           Pass --release to cargo
diff --git a/tests/cmd/publish.stdout b/tests/cmd/publish.stdout
index f8f9d78d2..1e5ff873c 100644
--- a/tests/cmd/publish.stdout
+++ b/tests/cmd/publish.stdout
@@ -73,7 +73,7 @@ Options:
   -b, --bindings <BINDINGS>
           Which kind of bindings to use
           
-          [possible values: pyo3, pyo3-ffi, rust-cpython, cffi, bin]
+          [possible values: pyo3, pyo3-ffi, rust-cpython, cffi, uniffi, bin]
 
   -o, --out <OUT>
           The directory to store the built wheels in. Defaults to a new "wheels" directory in the
diff --git a/tests/run.rs b/tests/run.rs
index 6a021565d..1876246ab 100644
--- a/tests/run.rs
+++ b/tests/run.rs
@@ -103,6 +103,26 @@ fn develop_cffi_mixed() {
     ));
 }
 
+#[test]
+fn develop_uniffi_pure() {
+    handle_result(develop::test_develop(
+        "test-crates/uniffi-pure",
+        None,
+        "develop-uniffi-pure",
+        false,
+    ));
+}
+
+#[test]
+fn develop_uniffi_mixed() {
+    handle_result(develop::test_develop(
+        "test-crates/uniffi-mixed",
+        None,
+        "develop-uniffi-mixed",
+        false,
+    ));
+}
+
 #[test]
 fn develop_hello_world() {
     handle_result(develop::test_develop(
@@ -244,6 +264,28 @@ fn integration_cffi_mixed() {
     ));
 }
 
+#[test]
+fn integration_uniffi_pure() {
+    handle_result(integration::test_integration(
+        "test-crates/uniffi-pure",
+        None,
+        "integration-uniffi-pure",
+        false,
+        None,
+    ));
+}
+
+#[test]
+fn integration_uniffi_mixed() {
+    handle_result(integration::test_integration(
+        "test-crates/uniffi-mixed",
+        None,
+        "integration-uniffi-mixed",
+        false,
+        None,
+    ));
+}
+
 #[test]
 fn integration_hello_world() {
     handle_result(integration::test_integration(