Merge #9192

9192: internal: Build test-macros in a build script r=jonas-schievink a=jonas-schievink

This build the test-proc-macros in `proc_macro_test` in a build script, and copies the artifact to `OUT_DIR`. This should make it available throughout all of rust-analyzer at no cost other than depending on `proc_macro_test`, fixing https://github.com/rust-analyzer/rust-analyzer/issues/9067.

This hopefully will let us later write inline tests that utilize proc macros, which makes my life fixing proc macro bugs easier.

Opening this as a sort of RFC, because I'm not totally sure this approach is the best.

Co-authored-by: Jonas Schievink <[email protected]>

1 files changed, 5 insertions, 1 deletions

diff --git a/crates/proc_macro_test/Cargo.toml b/crates/proc_macro_test/Cargo.toml
index 753443be2..1a88e361e 100644
--- a/crates/proc_macro_test/Cargo.toml
+++ b/crates/proc_macro_test/Cargo.toml
@@ -8,4 +8,8 @@ publish = false
 
 [lib]
 doctest = false
-proc-macro = true
+
+[build-dependencies]
+proc_macro_test_impl = { path = "imp", version = "0.0.0" }
+toolchain = { path = "../toolchain", version = "0.0.0" }
+cargo_metadata = "0.13"