gnu: Add python-robotframework-pythonlibcore.

* gnu/packages/python-xyz.scm (python-robotframework-pythonlibcore): New
variable.

gnu/packages/python-xyz.scm

@@ -4516,6 +4516,43 @@ for SSH and SFTP.  It has the following main usages:
 @end itemize")
     (license license:asl2.0)))
 
+(define-public python-robotframework-pythonlibcore
+  (package
+    (name "python-robotframework-pythonlibcore")
+    (version "3.0.0")
+    (source
+     (origin
+       (method git-fetch)               ;no tests in pypi archive
+       (uri (git-reference
+             (url "https://github.com/robotframework/PythonLibCore")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32
+         "0v89v8va65l6inh0fb34qgxawx6p29pnrmw4n5941yzdi3804rc4"))))
+    (build-system python-build-system)
+    (arguments
+     `(#:phases (modify-phases %standard-phases
+                  (replace 'check
+                    (lambda* (#:key tests? #:allow-other-keys)
+                      (when tests?
+                        (invoke "utest/run.py")))))))
+    (native-inputs
+     `(("python-pytest" ,python-pytest)
+       ("python-pytest-cov" ,python-pytest-cov)
+       ("python-pytest-mockito" ,python-pytest-mockito)
+       ("python-robotframework" ,python-robotframework)))
+    (home-page "https://github.com/robotframework/PythonLibCore")
+    (synopsis "Robot Framework Python library tools")
+    (description "PythonLibCore provides tools for creating larger test
+libraries for Robot Framework using Python.  The Robot Framework hybrid and
+dynamic library APIs give more flexibility for library than the static library
+API, but they also set requirements for libraries which need to be implemented
+in the library side.  PythonLibCore eases the problem by providing a simpler
+interface and by handling all the requirements towards the Robot Framework
+library APIs.")
+    (license license:asl2.0)))
+
 (define-public python-rstr
   (package
    (name "python-rstr")