[bug#68754] [PATCH 4/4] gnu: Add cargo-machete.

[Herman Rimm]

* gnu/packages/rust-apps.scm (cargo-machete): New variable.

Change-Id: Ic73bbb347a976d008d383557669e696e6fe3bdfa
---
 gnu/packages/rust-apps.scm | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/gnu/packages/rust-apps.scm b/gnu/packages/rust-apps.scm
index 88d27cede7..5b8a4b7be2 100644
--- a/gnu/packages/rust-apps.scm
+++ b/gnu/packages/rust-apps.scm
@@ -310,6 +310,36 @@ (define-public bat
 paging.")
     (license (list license:expat license:asl2.0))))
 
+(define-public cargo-machete
+  (package
+    (name "cargo-machete")
+    (version "0.6.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri name version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "0lbymfxgcizmj1c1ydpzinjbjhc7c9j0wb5y1xq33j80s5hzayaz"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:tests? #f ;Error: No such file or directory (os error 2)
+       #:cargo-inputs (("rust-anyhow" ,rust-anyhow-1)
+                       ("rust-argh" ,rust-argh-0.1)
+                       ("rust-cargo-metadata" ,rust-cargo-metadata-0.18)
+                       ("rust-cargo-toml" ,rust-cargo-toml-0.16)
+                       ("rust-grep" ,rust-grep-0.2)
+                       ("rust-log" ,rust-log-0.4)
+                       ("rust-pretty-env-logger" ,rust-pretty-env-logger-0.5)
+                       ("rust-rayon" ,rust-rayon-1)
+                       ("rust-serde" ,rust-serde-1)
+                       ("rust-toml-edit" ,rust-toml-edit-0.20)
+                       ("rust-walkdir" ,rust-walkdir-2))))
+    (home-page "https://github.com/est31/cargo-udeps";)
+    (synopsis "Find unused dependencies in Cargo.toml")
+    (description "@code{cargo-machete} finds unused dependencies in 
Cargo.toml.")
+    (license (list license:expat license:asl2.0))))
+
 (define-public diffr
   (package
     (name "diffr")
-- 
2.41.0