lang/rust-nightly: Unbreak build

RLS is broken in nightly-2020-07-18 but that should not have aborted
the package build.  Add a workaround for the dist.missing-tools
with build.tools bug.

https://github.com/rust-lang/rust/issues/74545

1 files changed, 20 insertions, 0 deletions

diff --git a/lang/rust-nightly/files/patch-src_bootstrap_install.rs b/lang/rust-nightly/files/patch-src_bootstrap_install.rs
new file mode 100644
index 000000000000..ac89792be1f9
--- /dev/null
+++ b/lang/rust-nightly/files/patch-src_bootstrap_install.rs
@@ -0,0 +1,20 @@
+https://github.com/rust-lang/rust/issues/74545
+
+--- src/bootstrap/install.rs.orig	2020-07-20 14:00:24 UTC
++++ src/bootstrap/install.rs
+@@ -112,9 +112,14 @@ fn install_sh(
+         pkgname(builder, name)
+     };
+ 
++    let install_script = tmpdir(builder).join(&package_name).join("install.sh");
++    if !install_script.exists() {
++        return;
++    }
++
+     let mut cmd = Command::new("sh");
+     cmd.current_dir(&empty_dir)
+-        .arg(sanitize_sh(&tmpdir(builder).join(&package_name).join("install.sh")))
++        .arg(sanitize_sh(&install_script))
+         .arg(format!("--prefix={}", sanitize_sh(&prefix)))
+         .arg(format!("--sysconfdir={}", sanitize_sh(&sysconfdir)))
+         .arg(format!("--datadir={}", sanitize_sh(&datadir)))