11/41: gnu: Add rust-compiler-builtins.

[guix-commits]

efraim pushed a commit to branch master
in repository guix.

commit 412c43b42350da4b91dacc11721d1b876e9cb62e
Author: Efraim Flashner <address@hidden>
Date:   Thu Sep 5 17:16:05 2019 +0300

    gnu: Add rust-compiler-builtins.
    
    * gnu/packages/crates-io.scm (rust-compiler-builtins): New hidden variable.
---
 gnu/packages/crates-io.scm | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index b945091..204257e 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -362,6 +362,36 @@ CMAKE environmental variable is set.")
     (license (list license:asl2.0
                    license:expat))))
 
+;; This package requires features which are unavailable
+;; on the stable releases of Rust.
+(define-public rust-compiler-builtins
+  (package
+    (name "rust-compiler-builtins")
+    (version "0.1.19")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "compiler_builtins" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1fpabpmg8paj4r5a37vmidh1jx1b7a6ilxm4s3xsxczx27ybjcjf"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-cc" ,rust-cc)
+        ("rust-rustc-std-workspace-core"
+         ,rust-rustc-std-workspace-core))))
+    (home-page "https://github.com/rust-lang-nursery/compiler-builtins";)
+    (synopsis "Compiler intrinsics used by the Rust compiler")
+    (description
+     "This package provides compiler intrinsics used by the Rust compiler.  
This
+package is primarily useful when building the @code{core} crate yourself and 
you
+need compiler-rt intrinsics.")
+    (properties `((hidden? . #t)))
+    (license (list license:asl2.0
+                   license:expat))))
+
 (define-public rust-constant-time-eq
   (package
     (name "rust-constant-time-eq")