Split crate into a proc-macro and a regular library crate

CONTRIBUTING.md

@@ -92,7 +92,7 @@ To produce a new release of the `derive_more` crate, perform the following steps
 
 1. Complete the existing [CHANGELOG] or fill up a new one for the new version.
 2. Update [README] installation instructions with the new version.
-3. Run `cargo release patch` (or `minor`/`major`).
+3. Run `cargo release patch --workspace` (or `minor`/`major`).
 4. Wait for the CI pipeline to complete successfully, and the [GitHub release] being created.
 
 

Cargo.toml

@@ -15,28 +15,23 @@ categories = ["development-tools", "development-tools::procedural-macro-helpers"
 
 include = [
     "src/**/*.rs",
-    "doc/**/*.md",
     "Cargo.toml",
     "LICENSE",
     "README.md",
     "CHANGELOG.md",
     "tests/**/*.rs", # debian packaging wants this
 ]
 
-[lib]
-name = "derive_more"
-proc-macro = true
 
 [dependencies]
-proc-macro2 = "1.0"
-quote = "1.0"
-syn = "1.0.81"
-convert_case = { version = "0.6", optional = true }
-unicode-xid = { version = "0.2.2", optional = true }
+derive_more-impl = { version = "=0.99.17", path = "impl" }
 
 [build-dependencies]
 rustc_version = { version = "0.4", optional = true }
 
+[workspace]
+members = ["impl"]
+
 [dev-dependencies]
 rustversion = "1.0"
 trybuild = "1.0.56"
@@ -48,30 +43,30 @@ github = { repository = "JelteF/derive_more", workflow = "CI" }
 rustdoc-args = ["--cfg", "docsrs"]
 
 [features]
-add_assign = []
-add = []
-as_mut = []
-as_ref = []
-constructor = []
-deref = []
-deref_mut = []
-display = ["syn/extra-traits", "unicode-xid"]
-error = ["syn/extra-traits"]
-from = ["syn/extra-traits"]
-from_str = ["convert_case"]
-index = []
-index_mut = []
-into = ["syn/extra-traits"]
-into_iterator = []
-iterator = []
-mul_assign = ["syn/extra-traits"]
-mul = ["syn/extra-traits"]
-not = ["syn/extra-traits"]
-sum = []
-try_into = ["syn/extra-traits"]
+add_assign = ["derive_more-impl/add_assign"]
+add = ["derive_more-impl/add"]
+as_mut = ["derive_more-impl/as_mut"]
+as_ref = ["derive_more-impl/as_ref"]
+constructor = ["derive_more-impl/constructor"]
+deref = ["derive_more-impl/deref"]
+deref_mut = ["derive_more-impl/deref_mut"]
+display = ["derive_more-impl/display"]
+error = ["derive_more-impl/error"]
+from = ["derive_more-impl/from"]
+from_str = ["derive_more-impl/from_str"]
+index = ["derive_more-impl/index"]
+index_mut = ["derive_more-impl/index_mut"]
+into = ["derive_more-impl/into"]
+into_iterator = ["derive_more-impl/into_iterator"]
+iterator = ["derive_more-impl/iterator"]
+mul_assign = ["derive_more-impl/mul_assign"]
+mul = ["derive_more-impl/mul"]
+not = ["derive_more-impl/not"]
+sum = ["derive_more-impl/sum"]
+try_into = ["derive_more-impl/try_into"]
 testing-helpers = ["rustc_version"]
-is_variant = ["convert_case"]
-unwrap = ["convert_case", "rustc_version"]
+is_variant = ["derive_more-impl/is_variant"]
+unwrap = ["derive_more-impl/unwrap"]
 
 default = [
     "add_assign",

impl/Cargo.toml

@@ -0,0 +1,67 @@
+[package]
+name = "derive_more-impl"
+version = "0.99.17"
+edition = "2021"
+rust-version = "1.56.0"
+description = "Adds #[derive(x)] macros for more traits"
+authors = ["Jelte Fennema <github-tech@jeltef.nl>"]
+license = "MIT"
+repository = "https://github.com/JelteF/derive_more"
+documentation = "https://docs.rs/derive_more"
+
+# explicitly no keywords or categories so it cannot be found easily
+
+include = [
+    "src/**/*.rs",
+    "doc/**/*.md",
+    "Cargo.toml",
+    "LICENSE",
+]
+
+[lib]
+proc-macro = true
+
+[dependencies]
+proc-macro2 = "1.0"
+quote = "1.0"
+syn = "1.0.81"
+convert_case = { version = "0.6", optional = true }
+unicode-xid = { version = "0.2.2", optional = true }
+
+[build-dependencies]
+rustc_version = { version = "0.4", optional = true }
+
+[dev-dependencies]
+rustversion = "1.0"
+trybuild = "1.0.56"
+
+[badges]
+github = { repository = "JelteF/derive_more", workflow = "CI" }
+
+[features]
+add_assign = []
+add = []
+as_mut = []
+as_ref = []
+constructor = []
+deref = []
+deref_mut = []
+display = ["syn/extra-traits", "unicode-xid"]
+error = ["syn/extra-traits"]
+from = ["syn/extra-traits"]
+from_str = ["convert_case"]
+index = []
+index_mut = []
+into = ["syn/extra-traits"]
+into_iterator = []
+iterator = []
+mul_assign = ["syn/extra-traits"]
+mul = ["syn/extra-traits"]
+not = ["syn/extra-traits"]
+sum = []
+try_into = ["syn/extra-traits"]
+testing-helpers = ["rustc_version"]
+is_variant = ["convert_case"]
+unwrap = ["convert_case", "rustc_version"]
+
+default = []

impl/LICENSE

@@ -0,0 +1 @@
+../LICENSE

impl/README.md

@@ -0,0 +1,12 @@
+# `derive_more-impl`
+
+This crate is an implementation detail of the [`derive_more`][crates.io]. If you
+found this crate by accident you're probably looking for one of the following
+pages of `derive_more`:
+1. [crates.io]
+2. [docs.rs][docs]
+3. [GitHub][github]
+
+[crates.io]: https://crates.io/crates/derive_more
+[docs.rs]: https://docs.rs/derive_more/latest/derive_more/
+[GitHub]: https://github.com/JelteF/derive_more