[bug#74551] [PATCH rust-team v3 40/73] gnu: Add rust-coverage-helper-0.1.

[Aaron Covrig]

* gnu/packages/crates-io.scm (rust-coverage-helper-0.1): New variable.
---
 gnu/packages/crates-io.scm | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index 61dba0631e..1ebecbe335 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -17382,6 +17382,28 @@ (define-public rust-coverage-helper-0.2
 @url{https://github.com/taiki-e/cargo-llvm-cov/issues/123, cargo-llvm-cov}.")
     (license (list license:asl2.0 license:expat))))
 
+(define-public rust-coverage-helper-0.1
+  (package
+    (inherit rust-coverage-helper-0.2)
+    (name "rust-coverage-helper")
+    (version "0.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "coverage-helper" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "1jmm45536nnwgpbgabnngr21n7sjmga0bm4yzaflx925xfll3m0g"))
+       (modules '((guix build utils)))
+       (snippet '(begin
+                   (substitute* "Cargo.toml"
+                     ;; cfg_attr(coverage_nightly) breaks some cargo versions
+                     ;; See issue: 
https://github.com/taiki-e/cargo-llvm-cov/issues/370
+                     (("\\[lib\\]" all)
+                      (string-append "[lints.rust]" "\n"
+                       "unexpected_cfgs = { level = \"warn\", check-cfg = 
['cfg(coverage_nightly)'] }"
+                       "\n" "\n" all)))))))))
+
 (define-public rust-count-instructions-0.1
   (package
     (name "rust-count-instructions")
-- 
2.47.0