Merge #7658

7658: Build dist-x86_64-unknown-linux-musl releases r=lnicola a=andylizi

Closes #4956.

* Artifact sample: [rust-analyzer-x86_64-unknown-linux-musl.gz](https://github.com/rust-analyzer/rust-analyzer/files/5975504/rust-analyzer-x86_64-unknown-linux-musl.gz)
* Build time: ~14m
```
$ ls -lh
-rwxr-xr-x    1 root     root       29.7M Feb 13 18:24 rust-analyzer-x86_64-unknown-linux-musl

$ ldd rust-analyzer-x86_64-unknown-linux-musl
        /lib/ld-musl-x86_64.so.1 (0x7f2751f13000)
        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x7f2750a78000)
        libc.musl-x86_64.so.1 => /lib/ld-musl-x86_64.so.1 (0x7f2751f13000)

$ ./rust-analyzer-x86_64-unknown-linux-musl --version
rust-analyzer 63fcf65
```

I can do `aarch64-unknown-linux-musl` if it's also needed.

Co-authored-by: andylizi <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/xtask/src/dist.rs b/xtask/src/dist.rs
index 6bc34106b..56bf9f99d 100644
--- a/xtask/src/dist.rs
+++ b/xtask/src/dist.rs
@@ -59,7 +59,7 @@ fn dist_client(version: &str, release_tag: &str) -> Result<()> {
 
 fn dist_server() -> Result<()> {
     let target = get_target();
-    if target.contains("-linux-gnu") {
+    if target.contains("-linux-gnu") || target.contains("-linux-musl") {
         env::set_var("CC", "clang");
     }