gnu: Add rust-configparser-2.

* gnu/packages/crates-io.scm (rust-configparser-2): New variable.

gnu/packages/crates-io.scm

@@ -7632,6 +7632,27 @@ queue.")
 applications.")
     (license (list license:expat license:asl2.0))))
 
+(define-public rust-configparser-2
+  (package
+    (name "rust-configparser")
+    (version "2.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "configparser" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "1qdaggalm3js86s2i11pjjcndrrvpk0pw1lfvmv7v25z3y66sqg2"))))
+    (build-system cargo-build-system)
+    (arguments `(#:skip-build? #t))
+    (home-page "https://github.com/mexili/configparser-rs")
+    (synopsis "Simple parsing utility for INI and ini-style syntax")
+    (description
+     "This package provides a simple configuration parsing utility with no
+dependencies that allows you to parse INI and ini-style syntax.  You can use
+this to write Rust programs which can be customized by end users easily.")
+    (license (list license:expat license:lgpl3+))))
+
 (define-public rust-console-0.14
   (package
     (name "rust-console")