125/189: gnu: Add rust-tower-layer-0.3.

[guix-commits]

arunisaac pushed a commit to branch wip-swc
in repository guix.

commit 0845622849aaa83d82d486122dc9c6b7193d2423
Author: Arun Isaac <arunisaac@systemreboot.net>
AuthorDate: Sat Sep 19 23:58:27 2020 +0530

    gnu: Add rust-tower-layer-0.3.
    
    * gnu/packages/crates-io.scm (rust-tower-layer-0.3): 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 6338646..a49525b 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -29704,6 +29704,28 @@ serializing Rust structures.")
     (home-page "https://github.com/alexcrichton/toml-rs";)
     (synopsis "Rust encoder and decoder of TOML-formatted files and streams")
 
+(define-public rust-tower-layer-0.3
+  (package
+    (name "rust-tower-layer")
+    (version "0.3.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "tower-layer" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1p6i9rn5d98wsx6hi4hbxh2xqh2clwz0blcm6jrqiciq4rpnapd3"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-development-inputs
+       (("rust-tower-service" ,rust-tower-service-0.3))))
+    (home-page "https://github.com/tower-rs/tower";)
+    (synopsis "Easy composition between @code{Service}s")
+    (description "This package decorates a @code{Service} to allow easy
+composition between @code{Service}s.")
+    (license license:expat)))
+
 (define-public rust-tower-service-0.3
   (package
     (name "rust-tower-service")