new file mode 100644
@@ -0,0 +1,20 @@
+--- a/vendor/fd-lock/Cargo.toml 2023-05-31 14:44:48.000000000 -0700
++++ b/vendor/fd-lock/Cargo.toml 2023-07-14 21:19:34.637702319 -0700
+@@ -45,7 +45,7 @@
+
+ [target."cfg(unix)".dependencies.rustix]
+ version = "0.37.0"
+-features = ["fs"]
++features = ["fs", "cc"]
+
+ [target."cfg(windows)".dependencies.windows-sys]
+ version = "0.45.0"
+--- a/src/bootstrap/Cargo.lock 2023-07-11 20:32:40.000000000 -0700
++++ b/src/bootstrap/Cargo.lock 2023-07-14 22:41:53.269284713 -0700
+@@ -618,6 +618,7 @@
+ dependencies = [
+ "bitflags",
++ "cc",
+ "errno",
+ "io-lifetimes",
+ "libc",
@@ -724,6 +724,22 @@ (define rust-1.69
(for-each delete-file
(find-files "vendor" ".*\\.(a|dll|exe|lib)$")))))))))
+(define rust-1.70
+ (let ((base-rust
+ (rust-bootstrapped-package
+ rust-1.69 "1.70.0" "0z6j7d0ni0rmfznv0w3mrf882m11kyh51g2bxkj40l3s1c0axgxj")))
+ (package
+ (inherit base-rust)
+ (source
+ (origin
+ (inherit (package-source base-rust))
+ ;; Rust 1.70 adds the rustix library which depends on the vendored fd-lock
+ ;; crate. The fd-lock crate uses Outline assembly which expects a precompiled
+ ;; static library. Enabling the "cc" feature tells the build.rs script to
+ ;; compile the assembly files instead of searching for a precompiled library.
+ (patches (search-patches "rust-1.70-fix-rustix-build.patch"))
+ (patch-flags '("-p1")))))))
+
;;; Note: Only the latest versions of Rust are supported and tested. The
;;; intermediate rusts are built for bootstrapping purposes and should not
;;; be relied upon. This is to ease maintenance and reduce the time