From 3bc0c3bee28d4722f65cb8a056bfb2e922f946dc Mon Sep 17 00:00:00 2001
From: Nicolas Goaziou <mail@nicolasgoaziou.fr>
Date: Mon, 7 Jun 2021 23:36:50 +0200
Subject: gnu: Add rust-darling-core-0.12.

* gnu/packages/crates-io.scm (rust-darling-core-0.12): New variable.
(rust-darling-core-0.10): Inherit from above.
---
 gnu/packages/crates-io.scm | 38 ++++++++++++++++++++++++++++++--------
 1 file changed, 30 insertions(+), 8 deletions(-)

diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index e8960e3cd3..0cd7617a6f 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -11142,8 +11142,37 @@ crate (implementation detail).")
 into structs when implementing custom derives.")
     (license license:expat)))
 
+(define-public rust-darling-core-0.12
+  (package
+    (name "rust-darling-core")
+    (version "0.12.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "darling_core" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "0dpscl87s75h6yhrmzdsapx86lc4y16m554xg4hiq2l3hrdlb4cf"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-fnv" ,rust-fnv-1)
+        ("rust-ident-case" ,rust-ident-case-1)
+        ("rust-proc-macro2" ,rust-proc-macro2-1)
+        ("rust-quote" ,rust-quote-1)
+        ("rust-strsim" ,rust-strsim-0.10)
+        ("rust-syn" ,rust-syn-1))))
+    (home-page "https://github.com/TedDriggs/darling")
+    (synopsis "Helper crate for @code{rust-darling}")
+    (description
+     "Helper crate for @code{rust-darling}, a proc-macro library for
+reading attributes into structs when implementing custom derives.")
+    (license license:expat)))
+
 (define-public rust-darling-core-0.10
   (package
+    (inherit rust-darling-core-0.12)
     (name "rust-darling-core")
     (version "0.10.2")
     (source
@@ -11155,7 +11184,6 @@ into structs when implementing custom derives.")
        (sha256
         (base32
          "16sija1jv0l754x4aa6b6fy01d1kf8m0r4id3flqipm45np61jgh"))))
-    (build-system cargo-build-system)
     (arguments
      `(#:cargo-inputs
        (("rust-fnv" ,rust-fnv-1)
@@ -11163,13 +11191,7 @@ into structs when implementing custom derives.")
         ("rust-proc-macro2" ,rust-proc-macro2-1)
         ("rust-quote" ,rust-quote-1)
         ("rust-strsim" ,rust-strsim-0.9)
-        ("rust-syn" ,rust-syn-1))))
-    (home-page "https://github.com/TedDriggs/darling")
-    (synopsis "Helper crate for @code{rust-darling}")
-    (description
-     "Helper crate for @code{rust-darling}, a proc-macro library for
-reading attributes into structs when implementing custom derives.")
-    (license license:expat)))
+        ("rust-syn" ,rust-syn-1))))))
 
 (define-public rust-darling-macro-0.10
   (package
-- 
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