gnu: Add gita.

* gnu/packages/version-control.scm (gita): New variable.

gnu/packages/version-control.scm

@@ -2912,3 +2912,53 @@ defects faster.")
     (synopsis "Git implementation library")
     (description "This package provides a Git implementation library.")
     (license license:asl2.0)))
+
+(define-public gita
+  (let ((commit "62eb3d69874f75bdd6f95743e57315bc59890f70")
+        (revision "1"))
+    (package
+      (name "gita")
+      (version (git-version "0.10.10" revision commit))
+      (source (origin
+                (method git-fetch)
+                (uri (git-reference
+                      (url "https://github.com/nosarthur/gita")
+                      (commit commit)))
+                (file-name (git-file-name name version))
+                (sha256
+                 (base32
+                  "1jn5wnmjbdrrgz9fif7s81pv3g92q0wjcqy5qxl77kjy7iv0kpfp"))))
+      (build-system python-build-system)
+      (native-inputs
+       `(("git" ,git) ;for tests
+         ("python-pytest" ,python-pytest)))
+      (propagated-inputs
+       `(("python-pyyaml" ,python-pyyaml)))
+      (arguments
+       `(#:phases
+         (modify-phases %standard-phases
+           (replace 'check
+             (lambda* (#:key inputs outputs #:allow-other-keys)
+               (substitute* "tests/test_main.py"
+                 (("'gita\\\\n'") "'source\\n'")
+                 (("'gita'") "'source'"))
+               (invoke (string-append (assoc-ref inputs "git") "/bin/git")
+                       "init")
+               (add-installed-pythonpath inputs outputs)
+               (invoke (string-append (assoc-ref inputs "python-pytest")
+                                      "/bin/pytest")
+                       "-vv" "tests"))))))
+      (home-page "https://github.com/nosarthur/gita")
+      (synopsis "Command-line tool to manage multiple Git repos")
+      (description "This package provides a command-line tool to manage
+multiple Git repos.
+
+This tool does two things:
+@itemize
+@item display the status of multiple Git repos such as branch, modification,
+commit message side by side
+@item (batch) delegate Git commands/aliases from any working directory
+@end itemize
+
+If several repos are related, it helps to see their status together.")
+      (license license:expat))))