From 7236977c174d33cfef1b1fbd2325ea6f5272b2fc Mon Sep 17 00:00:00 2001
From: Valentin Ignatev <address@hidden>
Date: Wed, 15 Jan 2020 04:10:19 +0300
Subject: [PATCH 034/275] gnu: Add rust-downcast-rs-1.1.

* gnu/packages/crates-io.scm (rust-downcast-rs-1.1): New variable.
---
 gnu/packages/crates-io.scm | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index bae93caa0c..84cb5725ba 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -2799,6 +2799,30 @@ from macros.")
     (description "Command line argument parsing.")
     (license (list license:expat license:unlicense))))
 
+(define-public rust-downcast-rs-1.1
+  (package
+    (name "rust-downcast-rs")
+    (version "1.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "downcast-rs" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1xhs2qj02k9m4mm5fgh19y88850y9jsnwwlblf2ffc91gjs6xfjj"))))
+    (build-system cargo-build-system)
+    (arguments '(#:skip-build? #t))
+    (home-page
+     "https://github.com/marcianx/downcast-rs")
+    (synopsis
+     "Trait object downcasting support using only safe Rust")
+    (description
+     "Trait object downcasting support using only safe Rust.  It supports type
+parameters, associated types, and type constraints.")
+    (license (list license:expat license:asl2.0))))
+
 (define-public rust-dtoa-0.4
   (package
     (name "rust-dtoa")
-- 
2.25.0