ci: explicit musl config

Author: nhtyy

Cargo.toml

@@ -116,10 +116,3 @@ default.extend-ignore-words-re = ["(?i)groth", "TRE"]
 
 [workspace.lints.clippy]
 print_stdout = "deny"
-
-# Workaround for cross-compilation to ARM musl targets.
-[workspace.metadata.cross.target.aarch64-unknown-linux-musl]
-pre-build = [
-  "sudo ln -s /usr/bin/g++ /usr/bin/musl-g++",
-  "sudo ln -s /usr/bin/gcc /usr/bin/aarch64-linux-musl-g++"
-]

Cross.toml

@@ -0,0 +1,6 @@
+[target.aarch64-unknown-linux-musl]
+# Workaround for cross-compilation to ARM musl targets.
+pre-build = [
+  "sudo ln -s /usr/bin/g++ /usr/bin/musl-g++",
+  "sudo ln -s /usr/bin/g++ /usr/bin/aarch64-linux-musl-g++"
+]