From 0bb4a85cfb0742cac45f1f414767811ab43b58e5 Mon Sep 17 00:00:00 2001
From: messense <messense@icloud.com>
Date: Mon, 30 Oct 2023 21:06:53 +0800
Subject: [PATCH] Add support for uniffi library mode (#1729)

---
 .cirrus.yml                                   |    4 +-
 .github/workflows/test.yml                    |    2 +-
 src/module_writer.rs                          |    7 -
 src/templates/Cargo.toml.j2                   |    4 +-
 test-crates/uniffi-mixed/Cargo.lock           |  397 ++++++-
 test-crates/uniffi-mixed/Cargo.toml           |    4 +-
 test-crates/uniffi-pure-proc-macro/Cargo.lock | 1025 +++++++++++++++++
 test-crates/uniffi-pure-proc-macro/Cargo.toml |   20 +
 .../check_installed/check_installed.py        |    7 +
 .../uniffi-pure-proc-macro/pyproject.toml     |    3 +
 test-crates/uniffi-pure-proc-macro/src/lib.rs |    6 +
 .../test_uniffi_pure.py                       |    5 +
 .../uniffi-pure-proc-macro/uniffi-bindgen.rs  |    3 +
 .../uniffi-pure-proc-macro/uniffi.toml        |    2 +
 test-crates/uniffi-pure/Cargo.lock            |  397 ++++++-
 test-crates/uniffi-pure/Cargo.toml            |    4 +-
 tests/run.rs                                  |   21 +
 17 files changed, 1851 insertions(+), 60 deletions(-)
 create mode 100644 test-crates/uniffi-pure-proc-macro/Cargo.lock
 create mode 100644 test-crates/uniffi-pure-proc-macro/Cargo.toml
 create mode 100644 test-crates/uniffi-pure-proc-macro/check_installed/check_installed.py
 create mode 100644 test-crates/uniffi-pure-proc-macro/pyproject.toml
 create mode 100644 test-crates/uniffi-pure-proc-macro/src/lib.rs
 create mode 100644 test-crates/uniffi-pure-proc-macro/test_uniffi_pure.py
 create mode 100644 test-crates/uniffi-pure-proc-macro/uniffi-bindgen.rs
 create mode 100644 test-crates/uniffi-pure-proc-macro/uniffi.toml

diff --git a/.cirrus.yml b/.cirrus.yml
index d3eee32f4..30e0273ac 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -45,7 +45,7 @@ macos_arm64_task:
       - cat Cargo.lock
   install_script:
     - brew install python3
-    - python3 -m pip install uniffi-bindgen==0.24.1
+    - python3 -m pip install uniffi-bindgen==0.25.0
   <<: *BUILD_AND_TEST
 
 linux_aarch64_task:
@@ -62,5 +62,5 @@ linux_aarch64_task:
       - echo $CIRRUS_OS
       - cat Cargo.lock
   install_script:
-    - python3 -m pip install uniffi-bindgen==0.24.1
+    - python3 -m pip install uniffi-bindgen==0.25.0
   <<: *BUILD_AND_TEST
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2d4294d5f..552fb811a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -119,7 +119,7 @@ jobs:
         if: ${{ !contains(matrix.python-version, 'pypy') }}
         run: pip install cffi
       - name: Install python packages
-        run: pip install virtualenv ziglang~=0.10.0 twine uniffi-bindgen==0.24.1
+        run: pip install virtualenv ziglang~=0.10.0 twine uniffi-bindgen==0.25.0
       - uses: dtolnay/rust-toolchain@stable
         id: rustup
         with:
diff --git a/src/module_writer.rs b/src/module_writer.rs
index 8d9c5cf0f..19bab78bb 100644
--- a/src/module_writer.rs
+++ b/src/module_writer.rs
@@ -921,13 +921,6 @@ fn generate_uniffi_bindings(
         false
     };
 
-    // Disallow library mode without UDL files for now
-    // Should be removed in https://github.com/PyO3/maturin/pull/1729
-    // once uniffi release a new version
-    if is_library {
-        bail!("No UDL files found in {}", crate_dir.join("src").display());
-    }
-
     let mut cmd = uniffi_bindgen_command(crate_dir)?;
     cmd.current_dir(crate_dir);
     cmd.args([
diff --git a/src/templates/Cargo.toml.j2 b/src/templates/Cargo.toml.j2
index 6453b58b0..d0ebf9179 100644
--- a/src/templates/Cargo.toml.j2
+++ b/src/templates/Cargo.toml.j2
@@ -16,8 +16,8 @@ pyo3 = "0.19.0"
 {% elif bindings == "rust-cpython" -%}
 cpython = "0.7.1"
 {% elif bindings == "uniffi" -%}
-uniffi = "0.24.1"
+uniffi = "0.25.0"
 
 [build-dependencies]
-uniffi = { version = "0.24.1", features = ["build"] }
+uniffi = { version = "0.25.0", features = ["build"] }
 {% endif -%}
diff --git a/test-crates/uniffi-mixed/Cargo.lock b/test-crates/uniffi-mixed/Cargo.lock
index 0a36f098b..bbf06fba6 100644
--- a/test-crates/uniffi-mixed/Cargo.lock
+++ b/test-crates/uniffi-mixed/Cargo.lock
@@ -2,6 +2,15 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "aho-corasick"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2969dcb958b36655471fc61f7e416fa76033bdd4bfed0678d8fee1e2d07a1f0"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "anyhow"
 version = "1.0.72"
@@ -96,12 +105,40 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "cc"
+version = "1.0.83"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1174fb0b6ec23863f8b971027804a42614e347eafb0a95bf0b12cdae21fc4d0"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
 [[package]]
 name = "fs-err"
 version = "2.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0845fa252299212f0389d64ba26f34fa32cfe41588355f21ed507c59a0f64541"
 
+[[package]]
+name = "generator"
+version = "0.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5cc16584ff22b460a382b7feec54b23d2908d858152e5739a120b949293bd74e"
+dependencies = [
+ "cc",
+ "libc",
+ "log",
+ "rustversion",
+ "windows",
+]
+
 [[package]]
 name = "glob"
 version = "0.3.1"
@@ -131,12 +168,47 @@ version = "1.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "af150ab688ff2122fcef229be89cb50dd66af9e01a4ff320cc137eecc9bacc38"
 
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
+[[package]]
+name = "libc"
+version = "0.2.149"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a08173bc88b7955d1b3145aa561539096c421ac8debde8cbc3612ec635fee29b"
+
 [[package]]
 name = "log"
 version = "0.4.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b06a4cde4c0f271a446782e3eff8de789548ce57dbc8eca9292c27f4a42004b4"
 
+[[package]]
+name = "loom"
+version = "0.5.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ff50ecb28bb86013e935fb6683ab1f6d3a20016f123c76fd4c27470076ac30f5"
+dependencies = [
+ "cfg-if",
+ "generator",
+ "pin-utils",
+ "scoped-tls",
+ "tracing",
+ "tracing-subscriber",
+]
+
+[[package]]
+name = "matchers"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8263075bb86c5a1b1427b5ae862e8889656f126e9f77c484496e8b47cf5c5558"
+dependencies = [
+ "regex-automata 0.1.10",
+]
+
 [[package]]
 name = "memchr"
 version = "2.5.0"
@@ -175,18 +247,55 @@ dependencies = [
  "minimal-lexical",
 ]
 
+[[package]]
+name = "nu-ansi-term"
+version = "0.46.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77a8165726e8236064dbb45459242600304b42a5ea24ee2948e18e023bf7ba84"
+dependencies = [
+ "overload",
+ "winapi",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dd8b5dd2ae5ed71462c540258bedcb51965123ad7e7ccf4b9a8cafaa4a63576d"
 
+[[package]]
+name = "oneshot"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f6640c6bda7731b1fdbab747981a0f896dd1fedaf9f4a53fa237a04a84431f4"
+dependencies = [
+ "loom",
+]
+
+[[package]]
+name = "overload"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b15813163c1d831bf4a13c3610c05c0d03b39feb07f7e09fa234dac9b15aaf39"
+
 [[package]]
 name = "paste"
 version = "1.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "de3145af08024dea9fa9914f381a17b8fc6034dfb00f3a84013f7ff43f29ed4c"
 
+[[package]]
+name = "pin-project-lite"
+version = "0.2.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8afb450f006bf6385ca15ef45d71d2288452bc3683ce2e2cacc0d18e4be60b58"
+
+[[package]]
+name = "pin-utils"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
+
 [[package]]
 name = "plain"
 version = "0.2.3"
@@ -211,12 +320,68 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "regex"
+version = "1.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "12de2eff854e5fa4b1295edd650e227e9d8fb0c9e90b12e7f36d6a6811791a29"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata 0.3.7",
+ "regex-syntax 0.7.5",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c230d73fb8d8c1b9c0b3135c5142a8acee3a0558fb8db5cf1cb65f8d7862132"
+dependencies = [
+ "regex-syntax 0.6.29",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49530408a136e16e5b486e883fbb6ba058e8e4e8ae6621a77b048b314336e629"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax 0.7.5",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.6.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f162c6dd7b008981e4d40210aca20b4bd0f9b60ca9271061b07f78537722f2e1"
+
+[[package]]
+name = "regex-syntax"
+version = "0.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dbb5fb1acd8a1a18b3dd5be62d25485eb770e05afb408a9627d14d451bae12da"
+
+[[package]]
+name = "rustversion"
+version = "1.0.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7ffc183a10b4478d04cbbbfc96d0873219d962dd5accaff2ffbd4ceb7df837f4"
+
 [[package]]
 name = "ryu"
 version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1ad4cc8da4ef723ed60bced201181d83791ad433213d8c24efffda1eec85d741"
 
+[[package]]
+name = "scoped-tls"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e1cf6437eb19a8f4a6cc0f7dca544973b0b78843adbfeb3683d1a94a0024a294"
+
 [[package]]
 name = "scroll"
 version = "0.11.0"
@@ -277,12 +442,27 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "sharded-slab"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f40ca3c46823713e0d4209592e8d6e826aa57e928f09752619fc696c499637f6"
+dependencies = [
+ "lazy_static",
+]
+
 [[package]]
 name = "siphasher"
 version = "0.3.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7bd3e3206899af3f8b12af284fafc038cc1dc2b41d1b89dd17297221c5d225de"
 
+[[package]]
+name = "smallvec"
+version = "1.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "942b4a808e05215192e39f4ab80813e599068285906cc91aa64f923db842bd5a"
+
 [[package]]
 name = "static_assertions"
 version = "1.1.0"
@@ -320,6 +500,16 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "thread_local"
+version = "1.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3fdd6f064ccff2d6567adcb3873ca630700f00b5ad3f060c25b5dcfd9a4ce152"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+]
+
 [[package]]
 name = "toml"
 version = "0.5.11"
@@ -329,6 +519,67 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "tracing"
+version = "0.1.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3523ab5a71916ccf420eebdf5521fcef02141234bbc0b8a49f2fdc4544364ef"
+dependencies = [
+ "pin-project-lite",
+ "tracing-attributes",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-attributes"
+version = "0.1.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34704c8d6ebcbc939824180af020566b01a7c01f80641264eba0999f6c2b6be7"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "tracing-core"
+version = "0.1.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c06d3da6113f116aaee68e4d601191614c9053067f9ab7f6edbcb161237daa54"
+dependencies = [
+ "once_cell",
+ "valuable",
+]
+
+[[package]]
+name = "tracing-log"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f751112709b4e791d8ce53e32c4ed2d353565a795ce84da2285393f41557bdf2"
+dependencies = [
+ "log",
+ "once_cell",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-subscriber"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30a651bc37f915e81f087d86e62a18eec5f79550c7faff886f7090b4ea757c77"
+dependencies = [
+ "matchers",
+ "nu-ansi-term",
+ "once_cell",
+ "regex",
+ "sharded-slab",
+ "smallvec",
+ "thread_local",
+ "tracing",
+ "tracing-core",
+ "tracing-log",
+]
+
 [[package]]
 name = "unicase"
 version = "2.6.0"
@@ -346,9 +597,9 @@ checksum = "301abaae475aa91687eb82514b328ab47a211a533026cb25fc3e519b86adfc3c"
 
 [[package]]
 name = "uniffi"
-version = "0.24.3"
+version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7e835154c561cd75f253008093a908c06fb1f14327afb0ffea88eac72e534cc0"
+checksum = "1f8995f4440e0e8e27435016e2bdec264445a830a3af91a40fe3ba34b69075c5"
 dependencies = [
  "anyhow",
  "uniffi_build",
@@ -365,9 +616,9 @@ dependencies = [
 
 [[package]]
 name = "uniffi_bindgen"
-version = "0.24.3"
+version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c2f91fdcd44de3aab35847bf80485f412879dcdd92b5140ee67f948e5eed750e"
+checksum = "6fb3dfb794733803cdfeff4c09cb4e2bcecb91df6928343a18c8ee679a5772a4"
 dependencies = [
  "anyhow",
  "askama",
@@ -380,18 +631,17 @@ dependencies = [
  "once_cell",
  "paste",
  "serde",
- "serde_json",
  "toml",
  "uniffi_meta",
  "uniffi_testing",
- "weedle2",
+ "uniffi_udl",
 ]
 
 [[package]]
 name = "uniffi_build"
-version = "0.24.3"
+version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b20f693fb51c21a21b9816bed5522f0231cc769d8ba38821a05ab7d39dad51d"
+checksum = "f2334eb7cf951fb80e4883593ac8d4f09f4df522f7703fc929ae34af2cf9487b"
 dependencies = [
  "anyhow",
  "camino",
@@ -400,9 +650,9 @@ dependencies = [
 
 [[package]]
 name = "uniffi_checksum_derive"
-version = "0.24.3"
+version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d1b354a9bd654cc6547d461ccd60a10eb6c7473178f12d8ff91cf4340ae947e8"
+checksum = "819bd46e5afff09738fbd493e58c26dca0b38bca8f206ffc9a7bc2dfd7e1c11d"
 dependencies = [
  "quote",
  "syn",
@@ -410,25 +660,25 @@ dependencies = [
 
 [[package]]
 name = "uniffi_core"
-version = "0.24.3"
+version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32793120650ceda4f4e0d8eacd784c1a736834b2cca7b12e2550d3a190553af4"
+checksum = "883166644d32c2e5c615c7917c8065eee1dd6ce00286b57d5ac0b362a0790422"
 dependencies = [
  "anyhow",
  "bytes",
  "camino",
- "cargo_metadata",
  "log",
  "once_cell",
+ "oneshot",
  "paste",
  "static_assertions",
 ]
 
 [[package]]
 name = "uniffi_macros"
-version = "0.24.3"
+version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c65987b46a026ab1dfff218963d34c45375355dd6f1995618262e1e038507ba3"
+checksum = "44b8de841c6b746e03e59b8476b2fa265c52f10cdad24906ec32503efe9a2421"
 dependencies = [
  "bincode",
  "camino",
@@ -445,32 +695,47 @@ dependencies = [
 
 [[package]]
 name = "uniffi_meta"
-version = "0.24.3"
+version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f815bba89a6585954c089c53a775d166c0334c907be0e462bf0f0ac0494656e7"
+checksum = "3dc021ae8f8c12f69022f1502537687df59045e1c16f5d1eafdb657ecdb7cdf1"
 dependencies = [
  "anyhow",
  "bytes",
- "serde",
  "siphasher",
  "uniffi_checksum_derive",
 ]
 
 [[package]]
 name = "uniffi_testing"
-version = "0.24.3"
+version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1048d7c54816dc27ed4041fe952d42c7cb88e711cf3299e36ee70df7692c4a39"
+checksum = "40fe383aca04dfbdf6a5039a9e76bb21ebb13e03e38cf1459f17c62eedee7b6c"
 dependencies = [
  "anyhow",
  "camino",
  "cargo_metadata",
  "fs-err",
  "once_cell",
- "serde",
- "serde_json",
 ]
 
+[[package]]
+name = "uniffi_udl"
+version = "0.25.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6040dd1410fcb1a2795ef426f698107c12e295cc11e44a2b040934f786a35d82"
+dependencies = [
+ "anyhow",
+ "uniffi_meta",
+ "uniffi_testing",
+ "weedle2",
+]
+
+[[package]]
+name = "valuable"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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diff --git a/test-crates/uniffi-pure-proc-macro/Cargo.toml b/test-crates/uniffi-pure-proc-macro/Cargo.toml
new file mode 100644
index 000000000..fe693e2d7
--- /dev/null
+++ b/test-crates/uniffi-pure-proc-macro/Cargo.toml
@@ -0,0 +1,20 @@
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+[build-dependencies]
+uniffi = { version = "0.25.0", features = ["build"] }
diff --git a/test-crates/uniffi-pure-proc-macro/check_installed/check_installed.py b/test-crates/uniffi-pure-proc-macro/check_installed/check_installed.py
new file mode 100644
index 000000000..c0db80f9a
--- /dev/null
+++ b/test-crates/uniffi-pure-proc-macro/check_installed/check_installed.py
@@ -0,0 +1,7 @@
+#!/usr/bin/env python3
+
+import uniffi_pure_proc_macro as uniffi_pure
+
+assert uniffi_pure.add(1, 2) == 3
+
+print("SUCCESS")
diff --git a/test-crates/uniffi-pure-proc-macro/pyproject.toml b/test-crates/uniffi-pure-proc-macro/pyproject.toml
new file mode 100644
index 000000000..07dd28cde
--- /dev/null
+++ b/test-crates/uniffi-pure-proc-macro/pyproject.toml
@@ -0,0 +1,3 @@
+[build-system]
+requires = ["maturin>=1.0,<2.0"]
+build-backend = "maturin"
diff --git a/test-crates/uniffi-pure-proc-macro/src/lib.rs b/test-crates/uniffi-pure-proc-macro/src/lib.rs
new file mode 100644
index 000000000..aef88a348
--- /dev/null
+++ b/test-crates/uniffi-pure-proc-macro/src/lib.rs
@@ -0,0 +1,6 @@
+#[uniffi::export]
+fn add(a: u32, b: u32) -> u32 {
+    a + b
+}
+
+uniffi::setup_scaffolding!();
diff --git a/test-crates/uniffi-pure-proc-macro/test_uniffi_pure.py b/test-crates/uniffi-pure-proc-macro/test_uniffi_pure.py
new file mode 100644
index 000000000..f6709f52f
--- /dev/null
+++ b/test-crates/uniffi-pure-proc-macro/test_uniffi_pure.py
@@ -0,0 +1,5 @@
+import uniffi_pure_proc_macro as uniffi_pure
+
+
+def test_add():
+    assert uniffi_pure.add(1, 2) == 3
diff --git a/test-crates/uniffi-pure-proc-macro/uniffi-bindgen.rs b/test-crates/uniffi-pure-proc-macro/uniffi-bindgen.rs
new file mode 100644
index 000000000..f6cff6cf1
--- /dev/null
+++ b/test-crates/uniffi-pure-proc-macro/uniffi-bindgen.rs
@@ -0,0 +1,3 @@
+fn main() {
+    uniffi::uniffi_bindgen_main()
+}
diff --git a/test-crates/uniffi-pure-proc-macro/uniffi.toml b/test-crates/uniffi-pure-proc-macro/uniffi.toml
new file mode 100644
index 000000000..86f350f53
--- /dev/null
+++ b/test-crates/uniffi-pure-proc-macro/uniffi.toml
@@ -0,0 +1,2 @@
+[bindings.python]
+cdylib_name = "example"
diff --git a/test-crates/uniffi-pure/Cargo.lock b/test-crates/uniffi-pure/Cargo.lock
index 31b7ae806..467af90a8 100644
--- a/test-crates/uniffi-pure/Cargo.lock
+++ b/test-crates/uniffi-pure/Cargo.lock
@@ -2,6 +2,15 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "aho-corasick"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2969dcb958b36655471fc61f7e416fa76033bdd4bfed0678d8fee1e2d07a1f0"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "anyhow"
 version = "1.0.72"
@@ -96,12 +105,40 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "cc"
+version = "1.0.83"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1174fb0b6ec23863f8b971027804a42614e347eafb0a95bf0b12cdae21fc4d0"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
 [[package]]
 name = "fs-err"
 version = "2.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0845fa252299212f0389d64ba26f34fa32cfe41588355f21ed507c59a0f64541"
 
+[[package]]
+name = "generator"
+version = "0.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5cc16584ff22b460a382b7feec54b23d2908d858152e5739a120b949293bd74e"
+dependencies = [
+ "cc",
+ "libc",
+ "log",
+ "rustversion",
+ "windows",
+]
+
 [[package]]
 name = "glob"
 version = "0.3.1"
@@ -131,12 +168,47 @@ version = "1.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "af150ab688ff2122fcef229be89cb50dd66af9e01a4ff320cc137eecc9bacc38"
 
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
+[[package]]
+name = "libc"
+version = "0.2.149"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a08173bc88b7955d1b3145aa561539096c421ac8debde8cbc3612ec635fee29b"
+
 [[package]]
 name = "log"
 version = "0.4.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b06a4cde4c0f271a446782e3eff8de789548ce57dbc8eca9292c27f4a42004b4"
 
+[[package]]
+name = "loom"
+version = "0.5.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ff50ecb28bb86013e935fb6683ab1f6d3a20016f123c76fd4c27470076ac30f5"
+dependencies = [
+ "cfg-if",
+ "generator",
+ "pin-utils",
+ "scoped-tls",
+ "tracing",
+ "tracing-subscriber",
+]
+
+[[package]]
+name = "matchers"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8263075bb86c5a1b1427b5ae862e8889656f126e9f77c484496e8b47cf5c5558"
+dependencies = [
+ "regex-automata 0.1.10",
+]
+
 [[package]]
 name = "memchr"
 version = "2.5.0"
@@ -175,18 +247,55 @@ dependencies = [
  "minimal-lexical",
 ]
 
+[[package]]
+name = "nu-ansi-term"
+version = "0.46.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77a8165726e8236064dbb45459242600304b42a5ea24ee2948e18e023bf7ba84"
+dependencies = [
+ "overload",
+ "winapi",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dd8b5dd2ae5ed71462c540258bedcb51965123ad7e7ccf4b9a8cafaa4a63576d"
 
+[[package]]
+name = "oneshot"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f6640c6bda7731b1fdbab747981a0f896dd1fedaf9f4a53fa237a04a84431f4"
+dependencies = [
+ "loom",
+]
+
+[[package]]
+name = "overload"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b15813163c1d831bf4a13c3610c05c0d03b39feb07f7e09fa234dac9b15aaf39"
+
 [[package]]
 name = "paste"
 version = "1.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "de3145af08024dea9fa9914f381a17b8fc6034dfb00f3a84013f7ff43f29ed4c"
 
+[[package]]
+name = "pin-project-lite"
+version = "0.2.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8afb450f006bf6385ca15ef45d71d2288452bc3683ce2e2cacc0d18e4be60b58"
+
+[[package]]
+name = "pin-utils"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
+
 [[package]]
 name = "plain"
 version = "0.2.3"
@@ -211,12 +320,68 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "regex"
+version = "1.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "12de2eff854e5fa4b1295edd650e227e9d8fb0c9e90b12e7f36d6a6811791a29"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata 0.3.7",
+ "regex-syntax 0.7.5",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c230d73fb8d8c1b9c0b3135c5142a8acee3a0558fb8db5cf1cb65f8d7862132"
+dependencies = [
+ "regex-syntax 0.6.29",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49530408a136e16e5b486e883fbb6ba058e8e4e8ae6621a77b048b314336e629"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax 0.7.5",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.6.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f162c6dd7b008981e4d40210aca20b4bd0f9b60ca9271061b07f78537722f2e1"
+
+[[package]]
+name = "regex-syntax"
+version = "0.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dbb5fb1acd8a1a18b3dd5be62d25485eb770e05afb408a9627d14d451bae12da"
+
+[[package]]
+name = "rustversion"
+version = "1.0.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7ffc183a10b4478d04cbbbfc96d0873219d962dd5accaff2ffbd4ceb7df837f4"
+
 [[package]]
 name = "ryu"
 version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1ad4cc8da4ef723ed60bced201181d83791ad433213d8c24efffda1eec85d741"
 
+[[package]]
+name = "scoped-tls"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e1cf6437eb19a8f4a6cc0f7dca544973b0b78843adbfeb3683d1a94a0024a294"
+
 [[package]]
 name = "scroll"
 version = "0.11.0"
@@ -277,12 +442,27 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "sharded-slab"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f40ca3c46823713e0d4209592e8d6e826aa57e928f09752619fc696c499637f6"
+dependencies = [
+ "lazy_static",
+]
+
 [[package]]
 name = "siphasher"
 version = "0.3.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7bd3e3206899af3f8b12af284fafc038cc1dc2b41d1b89dd17297221c5d225de"
 
+[[package]]
+name = "smallvec"
+version = "1.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "942b4a808e05215192e39f4ab80813e599068285906cc91aa64f923db842bd5a"
+
 [[package]]
 name = "static_assertions"
 version = "1.1.0"
@@ -320,6 +500,16 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "thread_local"
+version = "1.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3fdd6f064ccff2d6567adcb3873ca630700f00b5ad3f060c25b5dcfd9a4ce152"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+]
+
 [[package]]
 name = "toml"
 version = "0.5.11"
@@ -329,6 +519,67 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "tracing"
+version = "0.1.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3523ab5a71916ccf420eebdf5521fcef02141234bbc0b8a49f2fdc4544364ef"
+dependencies = [
+ "pin-project-lite",
+ "tracing-attributes",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-attributes"
+version = "0.1.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34704c8d6ebcbc939824180af020566b01a7c01f80641264eba0999f6c2b6be7"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "tracing-core"
+version = "0.1.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c06d3da6113f116aaee68e4d601191614c9053067f9ab7f6edbcb161237daa54"
+dependencies = [
+ "once_cell",
+ "valuable",
+]
+
+[[package]]
+name = "tracing-log"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f751112709b4e791d8ce53e32c4ed2d353565a795ce84da2285393f41557bdf2"
+dependencies = [
+ "log",
+ "once_cell",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-subscriber"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30a651bc37f915e81f087d86e62a18eec5f79550c7faff886f7090b4ea757c77"
+dependencies = [
+ "matchers",
+ "nu-ansi-term",
+ "once_cell",
+ "regex",
+ "sharded-slab",
+ "smallvec",
+ "thread_local",
+ "tracing",
+ "tracing-core",
+ "tracing-log",
+]
+
 [[package]]
 name = "unicase"
 version = "2.6.0"
@@ -346,9 +597,9 @@ checksum = "301abaae475aa91687eb82514b328ab47a211a533026cb25fc3e519b86adfc3c"
 
 [[package]]
 name = "uniffi"
-version = "0.24.3"
+version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7e835154c561cd75f253008093a908c06fb1f14327afb0ffea88eac72e534cc0"
+checksum = "1f8995f4440e0e8e27435016e2bdec264445a830a3af91a40fe3ba34b69075c5"
 dependencies = [
  "anyhow",
  "uniffi_build",
@@ -365,9 +616,9 @@ dependencies = [
 
 [[package]]
 name = "uniffi_bindgen"
-version = "0.24.3"
+version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c2f91fdcd44de3aab35847bf80485f412879dcdd92b5140ee67f948e5eed750e"
+checksum = "6fb3dfb794733803cdfeff4c09cb4e2bcecb91df6928343a18c8ee679a5772a4"
 dependencies = [
  "anyhow",
  "askama",
@@ -380,18 +631,17 @@ dependencies = [
  "once_cell",
  "paste",
  "serde",
- "serde_json",
  "toml",
  "uniffi_meta",
  "uniffi_testing",
- "weedle2",
+ "uniffi_udl",
 ]
 
 [[package]]
 name = "uniffi_build"
-version = "0.24.3"
+version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b20f693fb51c21a21b9816bed5522f0231cc769d8ba38821a05ab7d39dad51d"
+checksum = "f2334eb7cf951fb80e4883593ac8d4f09f4df522f7703fc929ae34af2cf9487b"
 dependencies = [
  "anyhow",
  "camino",
@@ -400,9 +650,9 @@ dependencies = [
 
 [[package]]
 name = "uniffi_checksum_derive"
-version = "0.24.3"
+version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d1b354a9bd654cc6547d461ccd60a10eb6c7473178f12d8ff91cf4340ae947e8"
+checksum = "819bd46e5afff09738fbd493e58c26dca0b38bca8f206ffc9a7bc2dfd7e1c11d"
 dependencies = [
  "quote",
  "syn",
@@ -410,25 +660,25 @@ dependencies = [
 
 [[package]]
 name = "uniffi_core"
-version = "0.24.3"
+version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32793120650ceda4f4e0d8eacd784c1a736834b2cca7b12e2550d3a190553af4"
+checksum = "883166644d32c2e5c615c7917c8065eee1dd6ce00286b57d5ac0b362a0790422"
 dependencies = [
  "anyhow",
  "bytes",
  "camino",
- "cargo_metadata",
  "log",
  "once_cell",
+ "oneshot",
  "paste",
  "static_assertions",
 ]
 
 [[package]]
 name = "uniffi_macros"
-version = "0.24.3"
+version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c65987b46a026ab1dfff218963d34c45375355dd6f1995618262e1e038507ba3"
+checksum = "44b8de841c6b746e03e59b8476b2fa265c52f10cdad24906ec32503efe9a2421"
 dependencies = [
  "bincode",
  "camino",
@@ -445,32 +695,47 @@ dependencies = [
 
 [[package]]
 name = "uniffi_meta"
-version = "0.24.3"
+version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f815bba89a6585954c089c53a775d166c0334c907be0e462bf0f0ac0494656e7"
+checksum = "3dc021ae8f8c12f69022f1502537687df59045e1c16f5d1eafdb657ecdb7cdf1"
 dependencies = [
  "anyhow",
  "bytes",
- "serde",
  "siphasher",
  "uniffi_checksum_derive",
 ]
 
 [[package]]
 name = "uniffi_testing"
-version = "0.24.3"
+version = "0.25.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1048d7c54816dc27ed4041fe952d42c7cb88e711cf3299e36ee70df7692c4a39"
+checksum = "40fe383aca04dfbdf6a5039a9e76bb21ebb13e03e38cf1459f17c62eedee7b6c"
 dependencies = [
  "anyhow",
  "camino",
  "cargo_metadata",
  "fs-err",
  "once_cell",
- "serde",
- "serde_json",
 ]
 
+[[package]]
+name = "uniffi_udl"
+version = "0.25.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6040dd1410fcb1a2795ef426f698107c12e295cc11e44a2b040934f786a35d82"
+dependencies = [
+ "anyhow",
+ "uniffi_meta",
+ "uniffi_testing",
+ "weedle2",
+]
+
+[[package]]
+name = "valuable"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "830b7e5d4d90034032940e4ace0d9a9a057e7a45cd94e6c007832e39edb82f6d"
+
 [[package]]
 name = "version_check"
 version = "0.9.4"
@@ -485,3 +750,91 @@ 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-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "windows"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e686886bc078bc1b0b600cac0147aadb815089b6e4da64016cbd754b6342700f"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.48.5"
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+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
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diff --git a/test-crates/uniffi-pure/Cargo.toml b/test-crates/uniffi-pure/Cargo.toml
index e7dfa01da..38e3f5cd9 100644
--- a/test-crates/uniffi-pure/Cargo.toml
+++ b/test-crates/uniffi-pure/Cargo.toml
@@ -10,7 +10,7 @@ name = "uniffi_pure"
 crate-type = ["cdylib"]
 
 [dependencies]
-uniffi = "0.24.1"
+uniffi = "0.25.0"
 
 [build-dependencies]
-uniffi = { version = "0.24.1", features = ["build"] }
+uniffi = { version = "0.25.0", features = ["build"] }
diff --git a/tests/run.rs b/tests/run.rs
index 4594a0915..f0e87078a 100644
--- a/tests/run.rs
+++ b/tests/run.rs
@@ -129,6 +129,16 @@ fn develop_uniffi_pure() {
     }
 }
 
+#[test]
+fn develop_uniffi_pure_proc_macro() {
+    handle_result(develop::test_develop(
+        "test-crates/uniffi-pure-proc-macro",
+        None,
+        "develop-uniffi-pure-proc-macro",
+        false,
+    ));
+}
+
 #[test]
 fn develop_uniffi_mixed() {
     if env::var("GITHUB_ACTIONS").is_ok() || which("uniffi-bindgen").is_ok() {
@@ -306,6 +316,17 @@ fn integration_uniffi_pure() {
     }
 }
 
+#[test]
+fn integration_uniffi_pure_proc_macro() {
+    handle_result(integration::test_integration(
+        "test-crates/uniffi-pure-proc-macro",
+        None,
+        "integration-uniffi-pure-proc-macro",
+        false,
+        None,
+    ));
+}
+
 #[test]
 fn integration_uniffi_mixed() {
     if env::var("GITHUB_ACTIONS").is_ok() || which("uniffi-bindgen").is_ok() {