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-rw-r--r--gnu/packages/crates-io.scm23
1 files changed, 23 insertions, 0 deletions
diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index ac5d68ae4b..f8632518a2 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -371,6 +371,29 @@ whether an expression matches a pattern.")
(license (list license:asl2.0
license:expat))))
+(define-public rust-peeking-take-while
+ (package
+ (name "rust-peeking-take-while")
+ (version "0.1.2")
+ (source
+ (origin
+ (method url-fetch)
+ (uri (crate-uri "peeking_take_while" version))
+ (file-name (string-append name "-" version ".tar.gz"))
+ (sha256
+ (base32
+ "16bhqr6rdyrp12zv381cxaaqqd0pwysvm1q8h2ygihvypvfprc8r"))))
+ (build-system cargo-build-system)
+ (home-page "https://github.com/fitzgen/peeking_take_while")
+ (synopsis "Provides the peeking_take_while iterator adaptor method")
+ (description
+ "Like @code{Iterator::take_while}, but calls the predicate on a peeked
+value. This allows you to use @code{Iterator::by_ref} and
+@code{Iterator::take_while} together, and still get the first value for which
+the @code{take_while} predicate returned false after dropping the @code{by_ref}.")
+ (license (list license:asl2.0
+ license:expat))))
+
(define-public rust-proc-macro2
(package
(name "rust-proc-macro2")