Re-enable pyo3_stub_gen::derive (#17)

Reverts #15 with modified Cargo.toml setting.


https://doc.rust-lang.org/cargo/reference/specifying-dependencies.html#the-role-of-the-version-key
> Note: [crates.io](https://crates.io/) does not allow packages to be
published with dependencies on code published outside of
[crates.io](https://crates.io/) itself
([dev-dependencies](https://doc.rust-lang.org/cargo/reference/specifying-dependencies.html#development-dependencies)
are ignored).

So the problem is `dev-dependency.pyo3-stub-gen` in
`pyo3-stub-gen-derive/Cargo.toml` specifies version `0.1.0`, which did
not exists on crates.io. This version specification is not needed, and
removed in this PR.

Then, we do not have cyclic dependency. We can release
`pyo3-stub-gen-derive` first, and then `pyo3-stub-gen`.

Author: termoshtt

Cargo.lock

@@ -8,7 +8,7 @@ members = [
 resolver = "2"
 
 [workspace.package]
-version = "0.1.0"
+version = "0.1.1"
 edition = "2021"
 
 description = "Stub file (*.pyi) generator for PyO3"
@@ -18,9 +18,6 @@ license     = "MIT OR Apache-2.0"
 readme      = "README.md"
 
 [workspace.dependencies]
-pyo3-stub-gen = { version = "0.1.0", path = "pyo3-stub-gen" }
-pyo3-stub-gen-derive = { version = "0.1.0", path = "pyo3-stub-gen-derive" }
-
 anyhow = "1.0.86"
 insta = "1.39.0"
 inventory = "0.3.15"

Cargo.toml

@@ -28,8 +28,7 @@ To generate a stub file for this project, please modify it as follows:
 
 ```rust
 use pyo3::prelude::*;
-use pyo3_stub_gen::StubInfo;
-use pyo3_stub_gen_derive::gen_stub_pyfunction;
+use pyo3_stub_gen::{derive::gen_stub_pyfunction, StubInfo};
 use std::{env, path::*};
 
 #[gen_stub_pyfunction]  // Proc-macro attribute to register a function to stub file generator.

README.md

@@ -18,8 +18,7 @@ quote.workspace = true
 syn = { workspace = true, features = ["full", "extra-traits"] }
 
 [dev-dependencies]
-pyo3-stub-gen.workspace = true
-
+pyo3-stub-gen = { path = "../pyo3-stub-gen" }
 insta.workspace = true
 inventory.workspace = true
 prettyplease.workspace = true

pyo3-stub-gen-derive/Cargo.toml

@@ -1,14 +1,13 @@
 [package]
 name = "pyo3-stub-gen-testing-mixed"
-version = "0.1.0"
+version = "0.1.1"
 edition = "2021"
 
 [lib]
 crate-type = ["cdylib", "rlib"]
 
 [dependencies]
-pyo3-stub-gen.workspace = true
-pyo3-stub-gen-derive.workspace = true
+pyo3-stub-gen = { path = "../pyo3-stub-gen" }
 pyo3.workspace = true
 
 [[bin]]

pyo3-stub-gen-testing-mixed/Cargo.toml

@@ -1,6 +1,5 @@
 use pyo3::prelude::*;
-use pyo3_stub_gen::StubInfo;
-use pyo3_stub_gen_derive::gen_stub_pyfunction;
+use pyo3_stub_gen::{derive::gen_stub_pyfunction, StubInfo};
 use std::{env, path::*};
 
 /// Gather information to generate stub files

pyo3-stub-gen-testing-mixed/src/lib.rs

@@ -1,14 +1,13 @@
 [package]
 name = "pyo3-stub-gen-testing-pure"
-version = "0.1.0"
+version = "0.1.1"
 edition = "2021"
 
 [lib]
 crate-type = ["cdylib", "rlib"]
 
 [dependencies]
-pyo3-stub-gen.workspace = true
-pyo3-stub-gen-derive.workspace = true
+pyo3-stub-gen = { path = "../pyo3-stub-gen" }
 pyo3.workspace = true
 
 [[bin]]

pyo3-stub-gen-testing-pure/Cargo.toml

@@ -2,8 +2,7 @@
 mod readme {}
 
 use pyo3::prelude::*;
-use pyo3_stub_gen::StubInfo;
-use pyo3_stub_gen_derive::gen_stub_pyfunction;
+use pyo3_stub_gen::{derive::gen_stub_pyfunction, StubInfo};
 use std::{env, path::*};
 
 /// Gather information to generate stub files

pyo3-stub-gen-testing-pure/src/lib.rs

@@ -15,3 +15,7 @@ itertools.workspace = true
 pyo3.workspace = true
 serde.workspace = true
 toml.workspace = true
+
+[dependencies.pyo3-stub-gen-derive]
+version = "0.1.1"
+path = "../pyo3-stub-gen-derive"

pyo3-stub-gen/Cargo.toml

@@ -1,4 +1,5 @@
-pub use inventory; // re-export to use in generated code
+pub use inventory;
+pub use pyo3_stub_gen_derive as derive; // re-export to use in generated code
 
 mod generate;
 mod pyproject;