gnu: Add rust-rustc-demangle-capi-0.1.

* gnu/packages/crates-io.scm (rust-rustc-demangle-capi-0.1): New variable.

Change-Id: I98afb19ed4bdbcb9107a1ab30af49b055802b8b0

Reviewed-by: Efraim Flashner <efraim@flashner.co.il>
Change-Id: Ifeaefa5a377600320c3fd2a637aefaf29707e3b7

gnu/packages/crates-io.scm

@@ -64836,6 +64836,37 @@ It is automatically published using the compiler repository at
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-rustc-demangle-capi-0.1
+  (package
+    (name "rust-rustc-demangle-capi")
+    (version "0.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "rustc-demangle-capi" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "1s2g4z1yrh1sxl4qkmpd19ss3x2lr9115vbir7pnhgy63r1d63yv"))))
+    (build-system cargo-build-system)
+    (arguments
+     (list
+      #:cargo-inputs `(("rust-rustc-demangle" ,rust-rustc-demangle-0.1))
+      #:phases
+      #~(modify-phases %standard-phases
+          (add-after 'install 'install-c-library
+            (lambda _
+              (install-file
+               (car (find-files "." "^rustc_demangle\\.h$"))
+               (string-append #$output "/include"))
+              (install-file
+               (car (find-files "." "^librustc_demangle.so$"))
+               (string-append #$output "/lib")))))))
+    (home-page "https://github.com/alexcrichton/rustc-demangle")
+    (synopsis "C API for the @code{rustc-demangle} crate")
+    (description "This package provides a C API library for the
+@code{rustc-demangle} crate.")
+    (license (list license:expat license:asl2.0))))
+
 (define-public rust-rustc-hash-1
   (package
     (name "rust-rustc-hash")