This is a reproduction of the bug reporeted in rust-analyzer: Choose the library's display_name as much as possible. · Issue #1032 · bazelbuild/rules_rust
$ RUST_LOG=debug bazel run @rules_rust//tools/rust_analyzer:gen_rust_project
INFO: Analyzed target @rules_rust//tools/rust_analyzer:gen_rust_project (0 packages loaded, 0 targets configured).
INFO: Found 1 target...
Target @rules_rust//tools/rust_analyzer:gen_rust_project up-to-date:
bazel-bin/external/rules_rust/tools/rust_analyzer/gen_rust_project
INFO: Elapsed time: 0.082s, Critical Path: 0.00s
INFO: 1 process: 1 internal.
INFO: Build completed successfully, 1 total action
INFO: Build completed successfully, 1 total action
[2021-11-25T07:56:59Z DEBUG gen_rust_project_lib] Building rust_analyzer_crate_spec files for ["@//..."]
[2021-11-25T07:56:59Z DEBUG gen_rust_project_lib::aquery] Get crate specs with targets: ["@//..."]
[2021-11-25T07:56:59Z DEBUG gen_rust_project_lib::aquery] CrateSpec { crate_id: "ID-lib.rs", display_name: "test_lib", edition: "2018", root_module: "lib.rs", is_workspace_member: true, deps: {}, proc_macro_dylib_path: None, source: None, cfg: ["test", "debug_assertions"], env: {}, target: "x86_64-unknown-linux-gnu" }
[2021-11-25T07:56:59Z DEBUG gen_rust_project_lib::aquery] CrateSpec { crate_id: "ID-main.rs", display_name: "main", edition: "2018", root_module: "main.rs", is_workspace_member: true, deps: {"ID-lib.rs"}, proc_macro_dylib_path: None, source: None, cfg: ["test", "debug_assertions"], env: {}, target: "x86_64-unknown-linux-gnu" }
[2021-11-25T07:56:59Z DEBUG gen_rust_project_lib::aquery] CrateSpec { crate_id: "ID-lib.rs", display_name: "lib", edition: "2018", root_module: "lib.rs", is_workspace_member: true, deps: {}, proc_macro_dylib_path: None, source: None, cfg: ["test", "debug_assertions"], env: {}, target: "x86_64-unknown-linux-gnu" }The library target "lib" will be consolidated into "test_lib" since the CrateSpec of "test_lib" takes precedence:
$ cat rust-project.json | jq .
{
"sysroot_src": "/home/ryo.takahashi/.cache/bazel/_bazel_ryo.takahashi/daa6394f9a4fb88c61035b847b70ddcf/execroot/__main__/external/rust_linux_x86_64/lib/rustlib/src/library",
"crates": [
{
"display_name": "test_lib",
"root_module": "lib.rs",
"edition": "2018",
"deps": [],
"is_workspace_member": true,
"cfg": [
"test",
"debug_assertions"
],
"target": "x86_64-unknown-linux-gnu",
"env": {},
"is_proc_macro": false
},
{
"display_name": "main",
"root_module": "main.rs",
"edition": "2018",
"deps": [
{
"crate": 0,
"name": "test_lib"
}
],
"is_workspace_member": true,
"cfg": [
"test",
"debug_assertions"
],
"target": "x86_64-unknown-linux-gnu",
"env": {},
"is_proc_macro": false
}
]
}Rust Analyzer cannot find the actual source of the lib:
