Closed
Description
When trying to compile Maud under rustc 1.27.0-nightly (ac5c0848d 2018-05-14) (not using the current version because of Diesel 1.3 compilation errors and rust-lang/rust#50825 and rust-lang/rust#51042), Maud fails to compile because TokenTree and Ident have been removed from the proc_macro crate in the most recent version.
error[E0432]: unresolved import `proc_macro::Ident`
--> maud_macros/src/generate.rs:8:5
|
8 | Ident,
| ^^^^^ no `Ident` in the root
error[E0432]: unresolved import `proc_macro::Ident`
--> maud_macros/src/lib.rs:19:33
|
19 | use proc_macro::{Literal, Span, Ident, TokenStream, TokenTree};
| ^^^^^ no `Ident` in the root
error[E0599]: no variant named `Ident` found for type `proc_macro::TokenTree` in the current scope
--> maud_macros/src/lib.rs:37:24
|
37 | let output_ident = TokenTree::Ident(Ident::new("__maud_output", Span::def_site()));
| ^^^^^^^^^^^^^^^^ variant not found in `proc_macro::TokenTree`
error[E0599]: no variant named `Ident` found for type `proc_macro::TokenTree` in the current scope
--> maud_macros/src/generate.rs:185:33
|
185 | name: TokenStream::from(TokenTree::Ident(Ident::new(attr_name, Span::call_site()))),
| ^^^^^^^^^^^^^^^^ variant not found in `proc_macro::TokenTree`
..snipped for brevity...
If possible, maud_macros should move to proc_macro2 to avoid this issue.
I see Ident is available through the proc_macro crate in newer Rust nightly versions, but unfortunately Ident is not available through proc_macro in the 2018-05-14.