buildRustPackage: fix deprecated use of registry.index config key (#22987)

anderspapitto · zimbatm · commit 6dbb3ab03124 · 2017-02-19T18:25:25.000Z
See rust-lang/cargo@8214bb9 for the cargo commit which deprecated the registry.index key, and implements this as a replacement. This gets rid of the error message warning: custom registry support via the `registry.index` configuration is being removed, this functionality will not work in the future
diff --git a/pkgs/build-support/rust/fetch-cargo-deps b/pkgs/build-support/rust/fetch-cargo-deps
@@ -11,8 +11,11 @@ fetchCargoDeps() {
     echo "Using rust registry from $rustRegistry"
 
     cat <<EOF > $out/config
-[registry]
-index = "file://$rustRegistry"
+[source.nix-store-rust-registry]
+registry = "file://$rustRegistry"
+
+[source.crates-io]
+replace-with = "nix-store-rust-registry"
 EOF
 
     export CARGO_HOME=$out
