From f7b63404e89889ab2f9a59fc1786744091949812 Mon Sep 17 00:00:00 2001
From: Zheng Junjie <873216071@qq.com>
Date: Mon, 25 Jan 2021 13:34:04 +0800
Subject: [PATCH 2/4] gnu: Add rust-defer-drop-1.

---
 gnu/packages/crates-io.scm | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index 39b3fb5189..1357f52c19 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -8815,6 +8815,33 @@ sizes.  Big-endian order is used.  WARNING: Block must be aligned!")
      "Decimal floating point arithmetic for Rust.")
     (license license:asl2.0)))
 
+(define-public rust-defer-drop-1
+  (package
+    (name "rust-defer-drop")
+    (version "1.0.1")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "defer-drop" version))
+        (file-name
+          (string-append name "-" version ".tar.gz"))
+        (sha256
+          (base32
+            "1d3pmmn5k2ir3yv8z8fnv4jprs5aijkz5pbdyl8x8kp18m90bbhq"))))
+    (build-system cargo-build-system)
+    (arguments
+      `(#:skip-build? #t
+        #:cargo-inputs
+        (("rust-crossbeam-channel"
+          ,rust-crossbeam-channel-0.4)
+         ("rust-once-cell" ,rust-once-cell-1))))
+    (home-page "https://github.com/Lucretiel/defer-drop")
+    (synopsis
+     "Defer dropping large types to a background thread")
+    (description
+     "This package provides a defer dropping large types to a background thread.")
+    (license license:mpl2.0)))
+
 (define-public rust-deflate-0.8
   (package
     (name "rust-deflate")
-- 
2.30.0