From 82925c0d7d30ac0fe780d99877f2589b5e8cd88e Mon Sep 17 00:00:00 2001
From: Petr Hodina <phodina@protonmail.com>
Date: Wed, 16 Feb 2022 02:02:29 +0100
Subject: [PATCH v2 2/3] gnu: Add rust-logos-0.12.

* gnu/packages/crates-io.scm (rust-logos-0.12): New variable.

diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index 1cbe7d4798..8bc1031e22 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -30738,6 +30738,33 @@ (define-public rust-log-0.3
      `(#:cargo-inputs
        (("rust-log" ,rust-log-0.4))))))
 
+(define-public rust-logos-0.12
+  (package
+    (name "rust-logos")
+    (version "0.12.0")
+    (source (origin
+              (method url-fetch)
+              (uri (crate-uri "logos" version))
+              (file-name (string-append name "-" version ".tar.gz"))
+              (sha256
+               (base32
+                "0idklzd8afh87c82n3yp3l0djjmkwrsginxgm5ni64xylny2lzj2"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-logos-derive" ,rust-logos-derive-0.12))))
+    (home-page "https://github.com/maciejhirsz/logos")
+    (synopsis "Generate fast Lexers")
+    (description "This package provides easy way to generate fast Lexers:
+@itemize
+@item Combines all token definitions into a single deterministic state machine
+@item Optimizes branches into lookup tables or jump tables
+@item Prevents backtracking inside token definitions
+@item Unwinds loops, and batches reads to minimize bounds checking
+@item Does all of that heavy lifting at compile time
+@end itemize")
+    (license (list license:expat license:asl2.0))))
+
 (define-public rust-logos-derive-0.12
   (package
     (name "rust-logos-derive")
-- 
2.38.1