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Add workaround for changing sysroot paths #5586

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merged 1 commit into from
Jul 30, 2020
Merged

Add workaround for changing sysroot paths #5586

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42 changes: 34 additions & 8 deletions crates/ra_project_model/src/sysroot.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -54,13 +54,24 @@ impl Sysroot {
let src = get_or_install_rust_src(cargo_toml)?;
let mut sysroot = Sysroot { crates: Arena::default() };
for name in SYSROOT_CRATES.trim().lines() {
// FIXME: remove this path when 1.47 comes out
// https://github.com/rust-lang/rust/pull/73265
let root = src.join(format!("lib{}", name)).join("lib.rs");
if root.exists() {
sysroot.crates.alloc(SysrootCrateData {
name: name.into(),
root,
deps: Vec::new(),
});
} else {
let root = src.join(name).join("src/lib.rs");
if root.exists() {
sysroot.crates.alloc(SysrootCrateData {
name: name.into(),
root,
deps: Vec::new(),
});
}
}
}
if let Some(std) = sysroot.std() {
Expand Down Expand Up @@ -94,23 +105,38 @@ fn get_or_install_rust_src(cargo_toml: &AbsPath) -> Result<AbsPathBuf> {
rustc.current_dir(current_dir).args(&["--print", "sysroot"]);
let stdout = utf8_stdout(rustc)?;
let sysroot_path = AbsPath::assert(Path::new(stdout.trim()));
let src_path = sysroot_path.join("lib/rustlib/src/rust/src");

if !src_path.exists() {
let mut src = get_rust_src(sysroot_path);
if src.is_none() {
let mut rustup = Command::new(ra_toolchain::rustup());
rustup.current_dir(current_dir).args(&["component", "add", "rust-src"]);
utf8_stdout(rustup)?;
src = get_rust_src(sysroot_path);
}
if !src_path.exists() {
bail!(
match src {
Some(r) => Ok(r),
None => bail!(
"can't load standard library from sysroot\n\
{}\n\
(discovered via `rustc --print sysroot`)\n\
try running `rustup component add rust-src` or set `RUST_SRC_PATH`",
src_path.display(),
)
sysroot_path.display(),
),
}
}

fn get_rust_src(sysroot_path: &AbsPath) -> Option<AbsPathBuf> {
// try the new path first since the old one still exists
let mut src_path = sysroot_path.join("lib/rustlib/src/rust/library");
if !src_path.exists() {
// FIXME: remove this path when 1.47 comes out
// https://github.com/rust-lang/rust/pull/73265
src_path = sysroot_path.join("lib/rustlib/src/rust/src");
}
if src_path.exists() {
Some(src_path)
} else {
None
}
Ok(src_path)
}

impl SysrootCrateData {
Expand Down