From 8169079a5ac0b5ac6bda79817e9ea75bb9dda437 Mon Sep 17 00:00:00 2001
From: Maxim Cournoyer <maxim.cournoyer@gmail.com>
Date: Sun, 2 Jan 2022 23:03:37 -0500
Subject: [PATCH] gnu: Add rust-cfg-expr-0.8.

* gnu/packages/crates-io.scm (rust-cfg-expr-0.8): 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 ae9092a3d3..32feb59f17 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -54609,6 +54609,30 @@ (define-public rust-syslog-3
     (description "Send log messages to syslog.")
     (license license:expat)))
 
+(define-public rust-cfg-expr-0.8
+  (package
+    (name "rust-cfg-expr")
+    (version "0.8.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "cfg-expr" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "03lgv8psc2qrr93hxgdfmfwbj1crpzghxd7qh6w2nz0l4qryh4ml"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-smallvec" ,rust-smallvec-1)
+        ("rust-target-lexicon" ,rust-target-lexicon-0.12))
+       #:cargo-development-inputs
+       (("rust-difference" ,rust-difference-2))))
+    (home-page "https://github.com/EmbarkStudios/cfg-expr")
+    (synopsis "Parser and evaluator for Rust @samp{cfg} expressions")
+    (description "This package provides a parser and evaluator for Rust
+@samp{cfg} expressions.")
+    (license (list license:expat license:asl2.0))))
+
 (define-public rust-system-deps-3
   (package
     (name "rust-system-deps")